jQuery:克隆元素和事件
每当我使用 ajax 动态创建新内容、.clone()、append() 等时,新元素都会丢失我编程的任何触发器和事件 =( 制作
副本后,可以在其他元素上使用简单的操作(例如将类添加到),在复制的元素上不再起作用。任何新的 ajax 内容都不再起作用。我可以做什么?
我正在克隆此 HTML,并且命令按钮不再起作用。在克隆元素:
<div name="shows" id="x"><br/> <!-- The ID depends on the database-->
<div name="shows" id="x">
ID: <input disabled="disabled" size="7" value="x" name="id" />
Status:
<select name="status" >
<option selected="selected" >Display</option>
<option >Hide</option>
</select>
<br/><br/>
<span class="required" id="date_txt">*Date: </span><input type="text" value="" name="date" />
<span class="required" id="title_txt">*Title: </span><input type="text" size="65" value="" name="title" />
<br/>
<span class="required" id="venue_txt">*Venue: </span><input type="text" size="45" value="" name="venue" />
Telephone: <input type="text" value="" name="tel" />
<br/>
URL: <input type="text" size="100" value="" name="url" />
<br/><br/>
Address: <input type="text" size="45" value="" name="address" />
<span class="required" id="city_txt">*City: </span><input type="text" value="" name="city" />
<br/>
State: <input type="text" value="" name="state" />
ZIP: <input type="text" value="" name="zip" />
<span id="country_txt">*Country: </span><input type="text" value="United States" name="country" />
<br/>
<br/>Comments: <br/>
<textarea cols="80" rows="8" name="comments" ></textarea>
</div>
<!-- START OF:commands -->
<div id="commands" >
<button name="edit" id="edit" >Edit</button>
<button name="delete" id="delete" >Delete</button>
<br />
<hr />
<br />
</div>
<!-- END OF:commands -->
</div>
<!-- END OF:new -->
添加了新评论,2011 年 11 月 3 日:
好的,我找到了问题所在,并且我的 jQuery 出现了错误。现在,当我添加 .clone( true ) 时,几乎一切正常。
My new problem is the UI datepicker. After cloning the HTML, when I click on the newly cloned date field, the focus goes to the (old) datefield the data was cloned from. More over, if I select a date, the value goes to the old datefield -Not the newly cloned datefield.
这是我的ajax代码(成功提交后):
UI datepicker代码:
$("input[name='date']").datepicker({ dateFormat: 'yy-mm-dd', changeMonth: true, changeYear: true, numberOfMonths: 3, showButtonPanel: true});
Ajax:
...ajax code...
function(data)
{
var $msg = eval(data);
if( $msg[0] == 1 )
{
//#var.new
$id = '#'+$msg[1];
$data = $("#new");
$new = $data.clone(true);
$new.find('input.datefield').datepicker();
$new.attr("id", $id);
$new.children('[name="id"]').val($id);
$new.children('[name="id"]').attr("value", $id);
$new.children(":input").each(function() { var $value = $(this).val(); $(this).attr("value", $value); });
$new.prepend( "<br/>" );
$commands = $("#blank").children("#commands").clone(true);
$commands.children("#add").text("Update");
$commands.children("#add").attr("pk", $id);
$commands.children("#add").attr("name", "update");
$commands.children("#add").attr("id", "update");
$commands.children("#reset").text("Delete");
$commands.children("#reset").attr("pk", $id);
$commands.children("#reset").attr("name", "delete");
$commands.children("#reset").attr("id", "delete");
$new.append( $commands );
//#animation
//blank.slideUp
$("#blank").slideUp(2500, function(){
$("#ADDNEW").html("► New:");
//$("#blank").clone().prependTo( $("#active") );
//$("#blank").prependTo( "#active" );
//active.slideUp
$("#active").slideUp("slow", function(){
$("#ON").html("► Active:");
$("#active").prepend( $new );
$('#reset').trigger('click');
//active.slideDown
$("#active").slideDown(8500, function(){
$("#ON").html("▼ Active:");
//blank.slideDown
$("#blank").slideDown(3500, function(){
$("#ADDNEW").html("▼ New:");
load_bar(0);
}); //end: anumation.#blank.slideDown
}); //end: anumation.#active.slideDown
}); //end: anumation.#blank.slideUp
}); //end: anumation.#active.slideUp
//$("#new").fadeOut(2000, function(){
//START: blank
//alert( $("#blank").html() );
//$dad = $("#new");
//$dad.children('input[name!="id"][name!="country"], textarea').val('');
//$dad.children('[name="country"]').val("United States");
//$dad.children('[name="date"]').focus();
//END: blank
//$("#new").fadeIn(2000, function(){
//alert( $msg );
//}); //end: anumation.fadeIn
//}); //end: anumation.fadeOut
} //end: if
else
{
//var varMSG = data;
//alert( "Hello" );
alert( $msg );
//$("#add").attr("disabled", false);
//$("#reset").attr("disabled", false);
load_bar(0);
} //end: if.else
}//end: $.post.function
); //END:$.post
});
//END:ajax
Whenever I use ajax to dynamically create new content, .clone(), append() etc, the new element looses any triggers and events I programmed =(
After making a copy, simple things that WORK on other elements (like adding a class to ), on the copied elements no longer work. Any new ajax content does not work. Command buttons no longer work. What can I do?
I am cloning this HTML, and the command buttons no longer work. Styling the span elements no longer work on the CLONED elements:
<div name="shows" id="x"><br/> <!-- The ID depends on the database-->
<div name="shows" id="x">
ID: <input disabled="disabled" size="7" value="x" name="id" />
Status:
<select name="status" >
<option selected="selected" >Display</option>
<option >Hide</option>
</select>
<br/><br/>
<span class="required" id="date_txt">*Date: </span><input type="text" value="" name="date" />
<span class="required" id="title_txt">*Title: </span><input type="text" size="65" value="" name="title" />
<br/>
<span class="required" id="venue_txt">*Venue: </span><input type="text" size="45" value="" name="venue" />
Telephone: <input type="text" value="" name="tel" />
<br/>
URL: <input type="text" size="100" value="" name="url" />
<br/><br/>
Address: <input type="text" size="45" value="" name="address" />
<span class="required" id="city_txt">*City: </span><input type="text" value="" name="city" />
<br/>
State: <input type="text" value="" name="state" />
ZIP: <input type="text" value="" name="zip" />
<span id="country_txt">*Country: </span><input type="text" value="United States" name="country" />
<br/>
<br/>Comments: <br/>
<textarea cols="80" rows="8" name="comments" ></textarea>
</div>
<!-- START OF:commands -->
<div id="commands" >
<button name="edit" id="edit" >Edit</button>
<button name="delete" id="delete" >Delete</button>
<br />
<hr />
<br />
</div>
<!-- END OF:commands -->
</div>
<!-- END OF:new -->
New comments added, 11/03/2011:
OK, I figured out the problem and I had an error on my jQuery. Now, when I add .clone( true ) ALMOST everything works.
My new problem is the UI datepicker.
After cloning the HTML, when I click on the newly cloned date field, the focus goes to the (old) datefield the data was cloned from. More over, if I select a date, the value goes to the old datefield -Not the newly cloned datefield.
Here is my ajax code (After a successful submition):
UI datepicker code:
$("input[name='date']").datepicker({ dateFormat: 'yy-mm-dd', changeMonth: true, changeYear: true, numberOfMonths: 3, showButtonPanel: true});
Ajax:
...ajax code...
function(data)
{
var $msg = eval(data);
if( $msg[0] == 1 )
{
//#var.new
$id = '#'+$msg[1];
$data = $("#new");
$new = $data.clone(true);
$new.find('input.datefield').datepicker();
$new.attr("id", $id);
$new.children('[name="id"]').val($id);
$new.children('[name="id"]').attr("value", $id);
$new.children(":input").each(function() { var $value = $(this).val(); $(this).attr("value", $value); });
$new.prepend( "<br/>" );
$commands = $("#blank").children("#commands").clone(true);
$commands.children("#add").text("Update");
$commands.children("#add").attr("pk", $id);
$commands.children("#add").attr("name", "update");
$commands.children("#add").attr("id", "update");
$commands.children("#reset").text("Delete");
$commands.children("#reset").attr("pk", $id);
$commands.children("#reset").attr("name", "delete");
$commands.children("#reset").attr("id", "delete");
$new.append( $commands );
//#animation
//blank.slideUp
$("#blank").slideUp(2500, function(){
$("#ADDNEW").html("► New:");
//$("#blank").clone().prependTo( $("#active") );
//$("#blank").prependTo( "#active" );
//active.slideUp
$("#active").slideUp("slow", function(){
$("#ON").html("► Active:");
$("#active").prepend( $new );
$('#reset').trigger('click');
//active.slideDown
$("#active").slideDown(8500, function(){
$("#ON").html("▼ Active:");
//blank.slideDown
$("#blank").slideDown(3500, function(){
$("#ADDNEW").html("▼ New:");
load_bar(0);
}); //end: anumation.#blank.slideDown
}); //end: anumation.#active.slideDown
}); //end: anumation.#blank.slideUp
}); //end: anumation.#active.slideUp
//$("#new").fadeOut(2000, function(){
//START: blank
//alert( $("#blank").html() );
//$dad = $("#new");
//$dad.children('input[name!="id"][name!="country"], textarea').val('');
//$dad.children('[name="country"]').val("United States");
//$dad.children('[name="date"]').focus();
//END: blank
//$("#new").fadeIn(2000, function(){
//alert( $msg );
//}); //end: anumation.fadeIn
//}); //end: anumation.fadeOut
} //end: if
else
{
//var varMSG = data;
//alert( "Hello" );
alert( $msg );
//$("#add").attr("disabled", false);
//$("#reset").attr("disabled", false);
load_bar(0);
} //end: if.else
}//end: $.post.function
); //END:$.post
});
//END:ajax
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.clone( true )
就可以了。文档:http://api.jquery.com/clone/
.clone( true )
does the trick.Documentation: http://api.jquery.com/clone/
您好,我有一个有点类似的用例,我有一些动态生成的内容,其中包含一个按钮,单击事件响应原始按钮,但不响应生成的按钮,
我以前做过:
但我通过将 on 替换为 live 解决了我的问题,如下所示:
Hi I'm having a bit similar use case, I have some dynamically generated content that contains a button, click event is responding to the original button but not the generated one,
I've done before :
but i resolved my problem by replacing the on by live like this :
如果您的处理程序是使用类似的设置
$('.class').click( ... )
尝试这样的操作:
$('.class').live('click', ...)
Live 适用于可能尚不存在的类的元素。
If your handlers are setup using something like
$('.class').click( ... )
Try something like this instead:
$('.class').live('click', ...)
Live applies to elements with the class that may not exist yet.
我终于让 UI 日期选择器正常工作了。我必须在克隆之前完全删除日期选择器,并在克隆元素之后添加它。 UI 的人应该让我们的事情变得更容易。去算算吧!
克隆之前:
克隆之后:
I finally got the UI datepicker to work properly. I had to completely remove datepicker BEFORE cloning and add it AFTER cloning elements. The guys at UI should make it easier for us. Go figure!
Just before cloning:
After cloning: