如何在动态添加的内容上使用先前的同级内容?

发布于 2024-09-26 18:39:48 字数 1209 浏览 4 评论 0原文

我正在尝试向手风琴动态添加元素。每个添加的元素都包含一个带有单选按钮的表单,该按钮的样式为 自定义表单元素 。这是我用来将元素添加到手风琴的代码。

$("#addpage").click(function(){
  $.get("addpage.php", function(data){
    $(data).insertAfter(".accordion div#[id^=element]:last");
  });
  $(".accordion").accordion('destroy');
  callAccordion();
});

添加代码没有问题,但是,手风琴永远不会完成,按钮也没有样式。该错误显示 Uncaught TypeError: Cannot read property 'style' of null。当我删除单选按钮时,手风琴可以正常工作。

这是 callAccordion 的代码

function callAccordion(){
$(".accordion").accordion({
   active: false,
   autoheight: false,
   collapsible: true,
   alwaysOpen: false,
   header: '> div >h3'
   }).sortable({
    axis: "y",
    handle: "h3",
    stop: function(event, ui){
    stop = true;
    },
        update: function(event, ui){
    var result = $(".accordion").sortable('toArray');
    stop = true;
    $.ajax({
    type: 'post',
    data: "element=" + result,
    url: 'modules/updatepageorder.php',
    success: function(data){
       if(data != "true"){
         alert("Unable to update page order!");
            }
    }
     });
   }
 });
 }

I'm trying to dynamically add elements to an accordion. Each added element contains a form with radio buttons styled with Custom Form Elements. Here is the code I'm using to add the element to the accordion.

$("#addpage").click(function(){
  $.get("addpage.php", function(data){
    $(data).insertAfter(".accordion div#[id^=element]:last");
  });
  $(".accordion").accordion('destroy');
  callAccordion();
});

The code is added without issue, however, the accordion never completes and the buttons aren't styled. The error says Uncaught TypeError: Cannot read property 'style' of null. When I remove the radio button, the accordion works without issue.

Here is the code for callAccordion

function callAccordion(){
$(".accordion").accordion({
   active: false,
   autoheight: false,
   collapsible: true,
   alwaysOpen: false,
   header: '> div >h3'
   }).sortable({
    axis: "y",
    handle: "h3",
    stop: function(event, ui){
    stop = true;
    },
        update: function(event, ui){
    var result = $(".accordion").sortable('toArray');
    stop = true;
    $.ajax({
    type: 'post',
    data: "element=" + result,
    url: 'modules/updatepageorder.php',
    success: function(data){
       if(data != "true"){
         alert("Unable to update page order!");
            }
    }
     });
   }
 });
 }

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海夕 2024-10-03 18:39:49

将手风琴代码放在回调中..

$("#addpage").click(function(){
  $.get("addpage.php", function(data){
  $(data).insertAfter(".accordion div#[id^=element]:last");
  $(".accordion").accordion('destroy');
  callAccordion();
    });
});

否则,它会在 ajax 调用在手风琴中添加新表单之前被调用..(发生这种情况是因为 ajax .get() 调用是异步的)

您提到的具体错误可能是由 callAccordion() 方法内部发生的任何事情引起的,我们看不到......所以除非您也发布该代码,否则没有任何帮助。

[更新]

我为插件创建了一个小更新(未经测试),可能会满足您的需求。

update: function() {

        var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
        for(a = 0; a < inputs.length; a++) {
            if((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className == "styled") {
                if((!inputs[a].previousSibling) || (inputs[a].previousSibling && inputs[a].previousSibling.className != inputs[a].type)){
                    span[a] = document.createElement("span");
                    span[a].className = inputs[a].type;

                    if(inputs[a].checked == true) {
                        if(inputs[a].type == "checkbox") {
                            position = "0 -" + (checkboxHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        } else {
                            position = "0 -" + (radioHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        }
                    }
                    inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                    inputs[a].onchange = Custom.clear;
                    if(!inputs[a].getAttribute("disabled")) {
                        span[a].onmousedown = Custom.pushed;
                        span[a].onmouseup = Custom.check;
                    } else {
                        span[a].className = span[a].className += " disabled";
                    }
                }
            }
        }
},

在插件中添加此方法,并在页面中插入新内容后立即调用 Custom.update(),紧接在 $(data).insertAfter(".accordion div#[id^=element]:最后”);

Put the accordion code inside the callback..

$("#addpage").click(function(){
  $.get("addpage.php", function(data){
  $(data).insertAfter(".accordion div#[id^=element]:last");
  $(".accordion").accordion('destroy');
  callAccordion();
    });
});

otherwise, it gets called before the ajax call adds the new form in the accordion .. (it happens because the ajax .get() call is asynchronous)

The specific error you mention could be caused by whatever happens inside the callAccordion() method, which we cannot see.. so no help there unless you post the code of that as well..

[Update]

I have created a small update for the plugin (untested) that might cover your needs..

update: function() {

        var inputs = document.getElementsByTagName("input"), span = Array(), textnode, option, active;
        for(a = 0; a < inputs.length; a++) {
            if((inputs[a].type == "checkbox" || inputs[a].type == "radio") && inputs[a].className == "styled") {
                if((!inputs[a].previousSibling) || (inputs[a].previousSibling && inputs[a].previousSibling.className != inputs[a].type)){
                    span[a] = document.createElement("span");
                    span[a].className = inputs[a].type;

                    if(inputs[a].checked == true) {
                        if(inputs[a].type == "checkbox") {
                            position = "0 -" + (checkboxHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        } else {
                            position = "0 -" + (radioHeight*2) + "px";
                            span[a].style.backgroundPosition = position;
                        }
                    }
                    inputs[a].parentNode.insertBefore(span[a], inputs[a]);
                    inputs[a].onchange = Custom.clear;
                    if(!inputs[a].getAttribute("disabled")) {
                        span[a].onmousedown = Custom.pushed;
                        span[a].onmouseup = Custom.check;
                    } else {
                        span[a].className = span[a].className += " disabled";
                    }
                }
            }
        }
},

Add this method in the plugin, and call Custom.update() right after you insert the new contents in your page, right after $(data).insertAfter(".accordion div#[id^=element]:last");

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