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使用 DOM 动态创建表

发布于 2024-12-18 13:58:33 字数 748 浏览 1 评论 0原文

有人能告诉我这段代码有什么问题吗？我想创建一个 2 列 3 行的表格，并且在单元格中我希望每一行都有 Text1 和 Text2。此代码创建一个 2 列 3 行的表格，但第三行的单元格中只有文本（其他为空）。

var tablearea = document.getElementById('tablearea');

var table = document.createElement('table');

var tr = [];

var td1 = document.createElement('td');
var td2 = document.createElement('td');

var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2');

for (var i = 1; i < 4; i++){
    tr[i] = document.createElement('tr');   
    for (var j = 1; j < 4; j++){
        td1.appendChild(text1);
        td2.appendChild(text2);
        tr[i].appendChild(td1);
        tr[i].appendChild(td2);
    }           
    table.appendChild(tr[i]);

}

tablearea.appendChild(table);
原文

Can someone tell me what's wrong with this code? I want to create a table with 2 columns and 3 rows, and in the cells I want Text1 and Text2 on every row. This code creates a table with 2 columns and 3 rows, but it's only text in the cells in the third row (the others are empty).

var tablearea = document.getElementById('tablearea');

var table = document.createElement('table');

var tr = [];

var td1 = document.createElement('td');
var td2 = document.createElement('td');

var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2');

for (var i = 1; i < 4; i++){
    tr[i] = document.createElement('tr');   
    for (var j = 1; j < 4; j++){
        td1.appendChild(text1);
        td2.appendChild(text2);
        tr[i].appendChild(td1);
        tr[i].appendChild(td2);
    }           
    table.appendChild(tr[i]);

}

tablearea.appendChild(table);

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评论（10）

南薇 2024-12-25 13:58:33

您必须在循环内创建 td 和文本节点。您的代码仅创建 2 个 td，因此只有 2 个可见。例子：

var table = document.createElement('table');
for (var i = 1; i < 4; i++) {
  var tr = document.createElement('tr');

  var td1 = document.createElement('td');
  var td2 = document.createElement('td');

  var text1 = document.createTextNode('Text1');
  var text2 = document.createTextNode('Text2');

  td1.appendChild(text1);
  td2.appendChild(text2);
  tr.appendChild(td1);
  tr.appendChild(td2);

  table.appendChild(tr);
}
document.body.appendChild(table);

You must create td and text nodes within loop. Your code creates only 2 td, so only 2 are visible. Example:

var table = document.createElement('table');
for (var i = 1; i < 4; i++) {
  var tr = document.createElement('tr');

  var td1 = document.createElement('td');
  var td2 = document.createElement('td');

  var text1 = document.createTextNode('Text1');
  var text2 = document.createTextNode('Text2');

  td1.appendChild(text1);
  td2.appendChild(text2);
  tr.appendChild(td1);
  tr.appendChild(td2);

  table.appendChild(tr);
}
document.body.appendChild(table);

回复 原文
小情绪 2024-12-25 13:58:33

这是因为您只创建了两个 td 元素和 2 个文本节点。

在循环中创建所有节点

重新创建循环中的节点：

var tablearea = document.getElementById('tablearea'),
    table = document.createElement('table');

for (var i = 1; i < 4; i++) {
    var tr = document.createElement('tr');

    tr.appendChild( document.createElement('td') );
    tr.appendChild( document.createElement('td') );

    tr.cells[0].appendChild( document.createTextNode('Text1') )
    tr.cells[1].appendChild( document.createTextNode('Text2') );

    table.appendChild(tr);
}

tablearea.appendChild(table);

在循环中创建然后克隆

预先创建它们，然后在循环中克隆它们：

var tablearea = document.getElementById('tablearea'),
    table = document.createElement('table'),
    tr = document.createElement('tr');

tr.appendChild( document.createElement('td') );
tr.appendChild( document.createElement('td') );

tr.cells[0].appendChild( document.createTextNode('Text1') )
tr.cells[1].appendChild( document.createTextNode('Text2') );

for (var i = 1; i < 4; i++) {
    table.appendChild(tr.cloneNode( true ));
}

tablearea.appendChild(table);

表工厂文本字符串

创建一个表工厂：

function populateTable(table, rows, cells, content) {
    if (!table) table = document.createElement('table');
    for (var i = 0; i < rows; ++i) {
        var row = document.createElement('tr');
        for (var j = 0; j < cells; ++j) {
            row.appendChild(document.createElement('td'));
            row.cells[j].appendChild(document.createTextNode(content + (j + 1)));
        }
        table.appendChild(row);
    }
    return table;
}

并像这样使用它：

document.getElementById('tablearea')
        .appendChild( populateTable(null, 3, 2, "Text") );

带有文本字符串或回调的表工厂

该工厂可以轻松修改为接受第四个参数的函数，以便以更动态的方式填充每个单元格的内容。

function populateTable(table, rows, cells, content) {
    var is_func = (typeof content === 'function');
    if (!table) table = document.createElement('table');
    for (var i = 0; i < rows; ++i) {
        var row = document.createElement('tr');
        for (var j = 0; j < cells; ++j) {
            row.appendChild(document.createElement('td'));
            var text = !is_func ? (content + '') : content(table, i, j);
            row.cells[j].appendChild(document.createTextNode(text));
        }
        table.appendChild(row);
    }
    return table;
}

像这样使用：

document.getElementById('tablearea')
        .appendChild(populateTable(null, 3, 2, function(t, r, c) {
                        return ' row: ' + r + ', cell: ' + c;
                     })
        );

It is because you're only creating two td elements and 2 text nodes.

Creating all nodes in a loop

Recreate the nodes inside your loop:

var tablearea = document.getElementById('tablearea'),
    table = document.createElement('table');

for (var i = 1; i < 4; i++) {
    var tr = document.createElement('tr');

    tr.appendChild( document.createElement('td') );
    tr.appendChild( document.createElement('td') );

    tr.cells[0].appendChild( document.createTextNode('Text1') )
    tr.cells[1].appendChild( document.createTextNode('Text2') );

    table.appendChild(tr);
}

tablearea.appendChild(table);

Creating then cloning in a loop

Create them beforehand, and clone them inside the loop:

var tablearea = document.getElementById('tablearea'),
    table = document.createElement('table'),
    tr = document.createElement('tr');

tr.appendChild( document.createElement('td') );
tr.appendChild( document.createElement('td') );

tr.cells[0].appendChild( document.createTextNode('Text1') )
tr.cells[1].appendChild( document.createTextNode('Text2') );

for (var i = 1; i < 4; i++) {
    table.appendChild(tr.cloneNode( true ));
}

tablearea.appendChild(table);

Table factory with text string

Make a table factory:

function populateTable(table, rows, cells, content) {
    if (!table) table = document.createElement('table');
    for (var i = 0; i < rows; ++i) {
        var row = document.createElement('tr');
        for (var j = 0; j < cells; ++j) {
            row.appendChild(document.createElement('td'));
            row.cells[j].appendChild(document.createTextNode(content + (j + 1)));
        }
        table.appendChild(row);
    }
    return table;
}

And use it like this:

document.getElementById('tablearea')
        .appendChild( populateTable(null, 3, 2, "Text") );

Table factory with text string or callback

The factory could easily be modified to accept a function as well for the fourth argument in order to populate the content of each cell in a more dynamic manner.

function populateTable(table, rows, cells, content) {
    var is_func = (typeof content === 'function');
    if (!table) table = document.createElement('table');
    for (var i = 0; i < rows; ++i) {
        var row = document.createElement('tr');
        for (var j = 0; j < cells; ++j) {
            row.appendChild(document.createElement('td'));
            var text = !is_func ? (content + '') : content(table, i, j);
            row.cells[j].appendChild(document.createTextNode(text));
        }
        table.appendChild(row);
    }
    return table;
}

Used like this:

document.getElementById('tablearea')
        .appendChild(populateTable(null, 3, 2, function(t, r, c) {
                        return ' row: ' + r + ', cell: ' + c;
                     })
        );
回复 原文
隱形的亼 2024-12-25 13:58:33

您需要为每列创建新的 TextNode 和 td 节点，而不是像代码那样在所有列中重用它们。

编辑：
像这样修改你的代码：

for (var i = 1; i < 4; i++)
{
   tr[i] = document.createElement('tr');   
      var td1 = document.createElement('td');
      var td2 = document.createElement('td');
      td1.appendChild(document.createTextNode('Text1'));
      td2.appendChild(document.createTextNode('Text2'));
      tr[i].appendChild(td1);
      tr[i].appendChild(td2);
  table.appendChild(tr[i]);
}

You need to create new TextNodes as well as td nodes for each column, not reuse them among all of the columns as your code is doing.

Edit:
Revise your code like so:

for (var i = 1; i < 4; i++)
{
   tr[i] = document.createElement('tr');   
      var td1 = document.createElement('td');
      var td2 = document.createElement('td');
      td1.appendChild(document.createTextNode('Text1'));
      td2.appendChild(document.createTextNode('Text2'));
      tr[i].appendChild(td1);
      tr[i].appendChild(td2);
  table.appendChild(tr[i]);
}
回复 原文
海未深 2024-12-25 13:58:33
<title>Registration Form</title>
<script>
    var table;

    function check() {
        debugger;
        var name = document.myForm.name.value;
        if (name == "" || name == null) {
            document.getElementById("span1").innerHTML = "Please enter the Name";
            document.myform.name.focus();
            document.getElementById("name").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span1").innerHTML = "";
            document.getElementById("name").style.border = "2px solid green";
        }

        var age = document.myForm.age.value;
        var ageFormat = /^(([1][8-9])|([2-5][0-9])|(6[0]))$/gm;

        if (age == "" || age == null) {
            document.getElementById("span2").innerHTML = "Please provide Age";
            document.myForm.age.focus();
            document.getElementById("age").style.border = "2px solid red";
            return false;
        }
        else if (!ageFormat.test(age)) {
            document.getElementById("span2").innerHTML = "Age can't be leass than 18 and greater than 60";
            document.myForm.age.focus();
            document.getElementById("age").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span2").innerHTML = "";
            document.getElementById("age").style.border = "2px solid green";
        }

        var password = document.myForm.password.value;
        if (document.myForm.password.length < 6) {
            alert("Error: Password must contain at least six characters!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[0-9]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one number (0-9)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[a-z]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one lowercase letter (a-z)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[A-Z]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one uppercase letter (A-Z)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[
amp;+,:;=?@#|'<>.^*()%!-]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one special character!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span3").innerHTML = "";
            document.getElementById("password").style.border = "2px solid green";

        }

        if (document.getElementById("data") == null)
            createTable();
        else {
            appendRow();
        }
        return true;
    }






    function createTable() {

        var myTableDiv = document.getElementById("myTable");  //indiv
        table = document.createElement("TABLE");   //TABLE??
        table.setAttribute("id", "data");
        table.border = '1';
        myTableDiv.appendChild(table);  //appendChild() insert it in the document (table --> myTableDiv)
        debugger;

        var header = table.createTHead();

        var th0 = table.tHead.appendChild(document.createElement("th"));
        th0.innerHTML = "Name";
        var th1 = table.tHead.appendChild(document.createElement("th"));
        th1.innerHTML = "Age";


        appendRow();

    }

    function appendRow() {
        var name = document.myForm.name.value;
        var age = document.myForm.age.value;


        var rowCount = table.rows.length;
        var row = table.insertRow(rowCount);

        row.insertCell(0).innerHTML = name;
        row.insertCell(1).innerHTML = age;



        clearForm();


    }


    function clearForm() {
        debugger;

        document.myForm.name.value = "";
        document.myForm.password.value = "";
        document.myForm.age.value = "";



    }
    function restrictCharacters(evt) {

        evt = (evt) ? evt : window.event;
        var charCode = (evt.which) ? evt.which : evt.keyCode;
        if (((charCode >= '65') && (charCode <= '90')) || ((charCode >= '97') && (charCode <= '122')) || (charCode == '32')) {
            return true;
        }
        else {
            return false;
        }
    }

</script>



<div>
    <form name="myForm">

        <table id="tableid">

            <tr>
                <th>Name</th>
                <td>
                    <input type="text" name="name" placeholder="Name" id="name" onkeypress="return restrictCharacters(event);" /></td>
                <td><span id="span1"></span></td>
            </tr>

            <tr>
                <th>Age</th>

                <td>
                    <input type="text" onkeypress="return event.charCode === 0 || /\d/.test(String.fromCharCode(event.charCode));" placeholder="Age"
                        name="age" id="age" /></td>
                <td><span id="span2"></span></td>
            </tr>

            <tr>
                <th>Password</th>
                <td>
                    <input type="password" name="password" id="password" placeholder="Password" /></td>
                <td><span id="span3"></span></td>
            </tr>


            <tr>
                <td></td>
                <td>
                    <input type="button" value="Submit" onclick="check();" /></td>
                <td>
                    <input type="reset" name="Reset" /></td>
            </tr>

        </table>
    </form>

    <div id="myTable">
    </div>

</div>

<title>Registration Form</title>
<script>
    var table;

    function check() {
        debugger;
        var name = document.myForm.name.value;
        if (name == "" || name == null) {
            document.getElementById("span1").innerHTML = "Please enter the Name";
            document.myform.name.focus();
            document.getElementById("name").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span1").innerHTML = "";
            document.getElementById("name").style.border = "2px solid green";
        }

        var age = document.myForm.age.value;
        var ageFormat = /^(([1][8-9])|([2-5][0-9])|(6[0]))$/gm;

        if (age == "" || age == null) {
            document.getElementById("span2").innerHTML = "Please provide Age";
            document.myForm.age.focus();
            document.getElementById("age").style.border = "2px solid red";
            return false;
        }
        else if (!ageFormat.test(age)) {
            document.getElementById("span2").innerHTML = "Age can't be leass than 18 and greater than 60";
            document.myForm.age.focus();
            document.getElementById("age").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span2").innerHTML = "";
            document.getElementById("age").style.border = "2px solid green";
        }

        var password = document.myForm.password.value;
        if (document.myForm.password.length < 6) {
            alert("Error: Password must contain at least six characters!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[0-9]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one number (0-9)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[a-z]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one lowercase letter (a-z)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[A-Z]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one uppercase letter (A-Z)!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        re = /[
amp;+,:;=?@#|'<>.^*()%!-]/g;
        if (!re.test(password)) {
            alert("Error: password must contain at least one special character!");
            document.myForm.password.focus();
            document.getElementById("password").style.border = "2px solid red";
            return false;
        }
        else {
            document.getElementById("span3").innerHTML = "";
            document.getElementById("password").style.border = "2px solid green";

        }

        if (document.getElementById("data") == null)
            createTable();
        else {
            appendRow();
        }
        return true;
    }






    function createTable() {

        var myTableDiv = document.getElementById("myTable");  //indiv
        table = document.createElement("TABLE");   //TABLE??
        table.setAttribute("id", "data");
        table.border = '1';
        myTableDiv.appendChild(table);  //appendChild() insert it in the document (table --> myTableDiv)
        debugger;

        var header = table.createTHead();

        var th0 = table.tHead.appendChild(document.createElement("th"));
        th0.innerHTML = "Name";
        var th1 = table.tHead.appendChild(document.createElement("th"));
        th1.innerHTML = "Age";


        appendRow();

    }

    function appendRow() {
        var name = document.myForm.name.value;
        var age = document.myForm.age.value;


        var rowCount = table.rows.length;
        var row = table.insertRow(rowCount);

        row.insertCell(0).innerHTML = name;
        row.insertCell(1).innerHTML = age;



        clearForm();


    }


    function clearForm() {
        debugger;

        document.myForm.name.value = "";
        document.myForm.password.value = "";
        document.myForm.age.value = "";



    }
    function restrictCharacters(evt) {

        evt = (evt) ? evt : window.event;
        var charCode = (evt.which) ? evt.which : evt.keyCode;
        if (((charCode >= '65') && (charCode <= '90')) || ((charCode >= '97') && (charCode <= '122')) || (charCode == '32')) {
            return true;
        }
        else {
            return false;
        }
    }

</script>



<div>
    <form name="myForm">

        <table id="tableid">

            <tr>
                <th>Name</th>
                <td>
                    <input type="text" name="name" placeholder="Name" id="name" onkeypress="return restrictCharacters(event);" /></td>
                <td><span id="span1"></span></td>
            </tr>

            <tr>
                <th>Age</th>

                <td>
                    <input type="text" onkeypress="return event.charCode === 0 || /\d/.test(String.fromCharCode(event.charCode));" placeholder="Age"
                        name="age" id="age" /></td>
                <td><span id="span2"></span></td>
            </tr>

            <tr>
                <th>Password</th>
                <td>
                    <input type="password" name="password" id="password" placeholder="Password" /></td>
                <td><span id="span3"></span></td>
            </tr>


            <tr>
                <td></td>
                <td>
                    <input type="button" value="Submit" onclick="check();" /></td>
                <td>
                    <input type="reset" name="Reset" /></td>
            </tr>

        </table>
    </form>

    <div id="myTable">
    </div>

</div>

 回复 原文 
故事与诗 2024-12-25 13:58:33
var html = "";
    for (var i = 0; i < data.length; i++){
    html +="<tr>"+
            "<td>"+ (i+1) + "</td>"+
            "<td>"+ data[i].name + "</td>"+
            "<td>"+ data[i].number + "</td>"+
            "<td>"+ data[i].city + "</td>"+
            "<td>"+ data[i].hobby + "</td>"+
            "<td>"+ data[i].birthdate + "</td>"+"<td><button data-arrayIndex='"+ i +"' onclick='editData(this)'>Edit</button><button data-arrayIndex='"+ i +"' onclick='deleteData()'>Delete</button></td>"+"</tr>";
}
$("#tableHtml").html(html);

var html = "";
    for (var i = 0; i < data.length; i++){
    html +="<tr>"+
            "<td>"+ (i+1) + "</td>"+
            "<td>"+ data[i].name + "</td>"+
            "<td>"+ data[i].number + "</td>"+
            "<td>"+ data[i].city + "</td>"+
            "<td>"+ data[i].hobby + "</td>"+
            "<td>"+ data[i].birthdate + "</td>"+"<td><button data-arrayIndex='"+ i +"' onclick='editData(this)'>Edit</button><button data-arrayIndex='"+ i +"' onclick='deleteData()'>Delete</button></td>"+"</tr>";
}
$("#tableHtml").html(html);

 回复 原文 
挽你眉间 2024-12-25 13:58:33
您可以创建动态表行，如下所示：
var tbl = document.createElement('table');
tbl.style.width = '100%';

for (var i = 0; i < files.length; i++) {

        tr = document.createElement('tr');

        var td1 = document.createElement('td');
        var td2 = document.createElement('td');
        var td3 = document.createElement('td');

        ::::: // As many <td> you want

        td1.appendChild(document.createTextNode());
        td2.appendChild(document.createTextNode());
        td3.appendChild(document.createTextNode();

        tr.appendChild(td1);
        tr.appendChild(td2);
        tr.appendChild(td3);

        tbl.appendChild(tr);
}

You can create a dynamic table rows as below:
var tbl = document.createElement('table');
tbl.style.width = '100%';

for (var i = 0; i < files.length; i++) {

        tr = document.createElement('tr');

        var td1 = document.createElement('td');
        var td2 = document.createElement('td');
        var td3 = document.createElement('td');

        ::::: // As many <td> you want

        td1.appendChild(document.createTextNode());
        td2.appendChild(document.createTextNode());
        td3.appendChild(document.createTextNode();

        tr.appendChild(td1);
        tr.appendChild(td2);
        tr.appendChild(td3);

        tbl.appendChild(tr);
}

 回复 原文 
鹿港小镇 2024-12-25 13:58:33
当您说“appendchild”时，您实际上将您的孩子从一个父母转移到另一个父母。
您必须为每个单元创建一个节点。
when you say 'appendchild' you actually move your child from one parent to another.
you have to create a node for each cell.
 回复 原文 
绝不服输 2024-12-25 13:58:33
在我的示例中，序列号是根据使用 css 对每行执行的操作进行管理的。我在每一行中使用了一个表单，当创建新行时，表单将被重置。
/*auto increment/decrement the sr.no.*/
body {
    counter-reset: section;
}

i.srno {
    counter-reset: subsection;
}

i.srno:before {
    counter-increment: section;
    content: counter(section);
}
/****/
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type='text/javascript'>
    $(document).ready(function () {
        $('#POITable').on('change', 'select.search_type', function (e) {
            var selectedval = $(this).val();
            $(this).closest('td').next().html(selectedval);
        });
    });
</script>
<table id="POITable" border="1">
    <tr>
        <th>Sl No</th>
        <th>Name</th>
        <th>Your Name</th>
        <th>Number</th>
        <th>Input</th>
        <th>Chars</th>
        <th>Action</th>
    </tr>
    <tr>
        <td><i class="srno"></i></td>
        <td>
            <select class="search_type" name="select_one">
                <option value="">Select</option>
                <option value="abc">abc</option>
                <option value="def">def</option>
                <option value="xyz">xyz</option>
            </select>
        </td>
        <td></td>
        <td>
            <select name="select_two" >
                <option value="">Select</option>
                <option value="123">123</option>
                <option value="456">456</option>
                <option value="789">789</option>
            </select>
        </td>

        <td><input type="text" size="8"/></td>
        <td>
            <select name="search_three[]" >
                <option value="">Select</option>
                <option value="one">1</option>
                <option value="two">2</option>
                <option value="three">3</option>
            </select>
        </td>
        <td><button type="button" onclick="deleteRow(this)">-</button><button type="button" onclick="insRow()">+</button></td>
    </tr>
</table>

<script type='text/javascript'>
    function deleteRow(row)
    {
        var i = row.parentNode.parentNode.rowIndex;
        document.getElementById('POITable').deleteRow(i);
    }
    function insRow()
    {
        var x = document.getElementById('POITable');
        var new_row = x.rows[1].cloneNode(true);
        var len = x.rows.length;
        //new_row.cells[0].innerHTML = len; //auto increment the srno
        var inp1 = new_row.cells[1].getElementsByTagName('select')[0];
        inp1.id += len;
        inp1.value = '';
        new_row.cells[2].innerHTML = '';
        new_row.cells[4].getElementsByTagName('input')[0].value = "";
        x.appendChild(new_row);
    }
</script>
希望这有帮助。
In my example, serial number is managed according to the actions taken on each row using css. I used a form inside each row, and when new row created then the form will get reset.
/*auto increment/decrement the sr.no.*/
body {
    counter-reset: section;
}

i.srno {
    counter-reset: subsection;
}

i.srno:before {
    counter-increment: section;
    content: counter(section);
}
/****/
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type='text/javascript'>
    $(document).ready(function () {
        $('#POITable').on('change', 'select.search_type', function (e) {
            var selectedval = $(this).val();
            $(this).closest('td').next().html(selectedval);
        });
    });
</script>
<table id="POITable" border="1">
    <tr>
        <th>Sl No</th>
        <th>Name</th>
        <th>Your Name</th>
        <th>Number</th>
        <th>Input</th>
        <th>Chars</th>
        <th>Action</th>
    </tr>
    <tr>
        <td><i class="srno"></i></td>
        <td>
            <select class="search_type" name="select_one">
                <option value="">Select</option>
                <option value="abc">abc</option>
                <option value="def">def</option>
                <option value="xyz">xyz</option>
            </select>
        </td>
        <td></td>
        <td>
            <select name="select_two" >
                <option value="">Select</option>
                <option value="123">123</option>
                <option value="456">456</option>
                <option value="789">789</option>
            </select>
        </td>

        <td><input type="text" size="8"/></td>
        <td>
            <select name="search_three[]" >
                <option value="">Select</option>
                <option value="one">1</option>
                <option value="two">2</option>
                <option value="three">3</option>
            </select>
        </td>
        <td><button type="button" onclick="deleteRow(this)">-</button><button type="button" onclick="insRow()">+</button></td>
    </tr>
</table>

<script type='text/javascript'>
    function deleteRow(row)
    {
        var i = row.parentNode.parentNode.rowIndex;
        document.getElementById('POITable').deleteRow(i);
    }
    function insRow()
    {
        var x = document.getElementById('POITable');
        var new_row = x.rows[1].cloneNode(true);
        var len = x.rows.length;
        //new_row.cells[0].innerHTML = len; //auto increment the srno
        var inp1 = new_row.cells[1].getElementsByTagName('select')[0];
        inp1.id += len;
        inp1.value = '';
        new_row.cells[2].innerHTML = '';
        new_row.cells[4].getElementsByTagName('input')[0].value = "";
        x.appendChild(new_row);
    }
</script>
Hope this helps.
 回复 原文 
鹿童谣 2024-12-25 13:58:33
在我的示例中，从按钮单击事件调用添加函数，然后从表单控件获取值并调用函数generateTable。
在generateTable函数中首先检查表是否已生成。如果表未定义，则调用generateHeader函数和生成标题，然后调用addToRow函数在表中添加新行。
<input type="button" class="custom-rounded-bttn bttn-save" value="Add" id="btnAdd" onclick="add()">


<div class="row">
    <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
        <div class="dataGridForItem">
        </div>
    </div>
</div>

//Call Function From Button click Event

var counts = 1;
function add(){ 
    var Weightage = $('#Weightage').val();
    var ItemName = $('#ItemName option:selected').text();  
    var ItemNamenum = $('#ItemName').val();
    generateTable(Weightage,ItemName,ItemNamenum);
     $('#Weightage').val('');
     $('#ItemName').val(-1);
     return true;
 } 


function generateTable(Weightage,ItemName,ItemNamenum){
    var tableHtml = '';
    if($("#rDataTable").html() == undefined){
        tableHtml = generateHeader();
    }else{
        tableHtml = $("#rDataTable");
    } 
    var temp = $("<div/>");
    var row = addToRow(Weightage,ItemName,ItemNamenum);
    $(temp).append($(row));
    $("#dataGridForItem").html($(tableHtml).append($(temp).html()));
}


//Generate Header


function generateHeader(){
        var html = "<table id='rDataTable' class='table table-striped'>";
        html+="<tr class=''>";
        html+="<td class='tb-heading ui-state-default'>"+'Sr.No'+"</td>";
        html+="<td class='tb-heading ui-state-default'>"+'Item Name'+"</td>";
        html+="<td class='tb-heading ui-state-default'>"+'Weightage'+"</td>";
        html+="</tr></table>";
        return html; 
}

//Add New Row


function addToRow(Weightage,ItemName,ItemNamenum){
    var html="<tr class='trObj'>";
    html+="<td>"+counts+"</td>";
    html+="<td>"+ItemName+"</td>";
    html+="<td>"+Weightage+"</td>";
    html+="</tr>";
    counts++;
    return html;
}

In My example call add function from button click event and then get value from form control's and call function generateTable.
In generateTable Function check first Table is Generaed or not. If table is undefined then call generateHeader Funtion and Generate Header and then call addToRow function for adding new row in table.
<input type="button" class="custom-rounded-bttn bttn-save" value="Add" id="btnAdd" onclick="add()">


<div class="row">
    <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
        <div class="dataGridForItem">
        </div>
    </div>
</div>

//Call Function From Button click Event

var counts = 1;
function add(){ 
    var Weightage = $('#Weightage').val();
    var ItemName = $('#ItemName option:selected').text();  
    var ItemNamenum = $('#ItemName').val();
    generateTable(Weightage,ItemName,ItemNamenum);
     $('#Weightage').val('');
     $('#ItemName').val(-1);
     return true;
 } 


function generateTable(Weightage,ItemName,ItemNamenum){
    var tableHtml = '';
    if($("#rDataTable").html() == undefined){
        tableHtml = generateHeader();
    }else{
        tableHtml = $("#rDataTable");
    } 
    var temp = $("<div/>");
    var row = addToRow(Weightage,ItemName,ItemNamenum);
    $(temp).append($(row));
    $("#dataGridForItem").html($(tableHtml).append($(temp).html()));
}


//Generate Header


function generateHeader(){
        var html = "<table id='rDataTable' class='table table-striped'>";
        html+="<tr class=''>";
        html+="<td class='tb-heading ui-state-default'>"+'Sr.No'+"</td>";
        html+="<td class='tb-heading ui-state-default'>"+'Item Name'+"</td>";
        html+="<td class='tb-heading ui-state-default'>"+'Weightage'+"</td>";
        html+="</tr></table>";
        return html; 
}

//Add New Row


function addToRow(Weightage,ItemName,ItemNamenum){
    var html="<tr class='trObj'>";
    html+="<td>"+counts+"</td>";
    html+="<td>"+ItemName+"</td>";
    html+="<td>"+Weightage+"</td>";
    html+="</tr>";
    counts++;
    return html;
}

 回复 原文 
绮烟 2024-12-25 13:58:33
您可以使用 LemonadeJS 来做到这一点。
<html>
<script src="https://lemonadejs.net/v2/lemonade.js"></script>
<div id='root'></div>
<script>
var Component = (function() {
    var self = {};
 
    self.rows = [
        { title:'Google', description: 'The alpha search engine...' },
        { title:'Bind', description: 'The microsoft search engine...' },
        { title:'Duckduckgo', description: 'Privacy in the first place...' },
    ];
 
    // Custom components such as List should always be unique inside a real tag.
    var template = `<table cellpadding="6">
            <thead><tr><th>Title</th><th>Description</th></th></thead>
            <tbody @loop="self.rows">
            <tr><td>{{self.title}}</td><td>{{self.description}}</td></tr>
            </tbody>
        </table>`;
 
    return lemonade.element(template, self);
});
 
lemonade.render(Component, document.getElementById('root'));
</script>
</html>

You can do that using LemonadeJS.
<html>
<script src="https://lemonadejs.net/v2/lemonade.js"></script>
<div id='root'></div>
<script>
var Component = (function() {
    var self = {};
 
    self.rows = [
        { title:'Google', description: 'The alpha search engine...' },
        { title:'Bind', description: 'The microsoft search engine...' },
        { title:'Duckduckgo', description: 'Privacy in the first place...' },
    ];
 
    // Custom components such as List should always be unique inside a real tag.
    var template = `<table cellpadding="6">
            <thead><tr><th>Title</th><th>Description</th></th></thead>
            <tbody @loop="self.rows">
            <tr><td>{{self.title}}</td><td>{{self.description}}</td></tr>
            </tbody>
        </table>`;
 
    return lemonade.element(template, self);
});
 
lemonade.render(Component, document.getElementById('root'));
</script>
</html>

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