如何更新div元素中html元素的id和名称？ [英] How to update id and name of html element inside div element?

问题描述

我有以下的html代码。它由Razor引擎生成。这是动态的。我的意思是，下拉的元素不会因用户而异。我需要将此下拉列表复制到同一个下拉列表中，并使用新的id和新名称。我看过此处，这里，这里和这里。以下是我的html。我已在代码中添加注释以获得更多说明。

<！ - 需要复制id和name模板的整个部分 - >< div id =template name =templateclass =form-group unique> < label class =control-label col-md-2for =课程>课程< / label> <！ - 下面的下拉列表中包含id和名称为Course [0] .TitleI需要在[]内增加索引 - > < div class =col-md-10> < select class =form-control drop validid =Course [0] .Titlename =Course [0] .Title> < option value =1>统计信息< / option> < option value =2>三角函数< / option> < option value =3>生物学< / option> < option value =4>神经病学< / option> < option value =5>已应用< / option> < option value =6>理论< / option> < /选择> < / div>< / div>  

跟随以下jQuery代码。它只复制一次，然后停止工作。我检查了控制台，没有错误。 javascript代码和澄清的注释如下。

< script src =〜/ Scripts / jquery-1.10.2.min.js> < / script>< script type =text / javascript> $（document）.ready（function（）{//复制类名为唯一的部分var clone = $（'。unique'）。clone（）; //再次复制我修改的id，div的名称唯一类var clone2 = $（'。unique'）。clone（）; //用1初始化索引，具有0索引的项目已经在网页中var i = 1; //更改名称，删除并分配新名称$（。unique）.find（。drop）.attr（name，Course [0] .Title）; //更改具有类删除和分配的下拉列表的ID新的ID $（。unique）.find（。drop）.attr（id，Course [0] .Title）; //点击加号按钮， div部分和新的id和名称$（＃plus）.click（function（）{//在具有class unique $（'。unique'）。之后的元素后面添加（clone2）; //在里面查找名字（。）.attr（name，Course [+ i +] .Title）; //查找唯一id并更新$（ .uni （。）.attr（id，Course [+ i +] .Title）; //增加索引i = i + 1; }）; }）;< / script>

？

解决方案

这就是你想要的吗？设置 attr（name）和 attr（id）

时出现了一些拼写错误

另外这里是我的代码，以便尽可能多地获得插入效果：

我克隆（）事件使它工作。

  $（document）.ready（函数（）{
 //用1初始化索引，0索引的项目已经存在于网页中
 var i = 1; 
 $（＃plus）。on（'点击'，function（）{
 //在具有类唯一
的元素后面添加clone clone（）; $ b $（＃template ）.after（clone2）; 
 $（clone2）.attr（'id'，template+ i）; 
 $（clone2）.attr（'name'，template+ i） ; 
 //查找唯一名称并更新
 $（clone2）.find（。drop）.attr（name，Course [+ i +] .Title）; 
 //查找唯一id并更新
（clone2）.find（。drop）.attr（id，Course [+ i +] .Title）; 
 //增加指数
 
 i ++; 
}）; 
}）; 
  

看到这个小提琴

I have following html code. It is generated by Razor engine. This is dynamic. I mean the no of elements in drop down may vary according to user. I need to replicate this drop down exactly below the same drop down with new id and new name. I have looked here, here,here and here. Following is my html. I have added comments in code for more clarification.

<!-- the entire section with id and name template needs to be copied -->
<div id="template" name="template" class="form-group unique">
  <label class="control-label col-md-2" for="Course">Course</label>
  <!-- the drop down below has id and name as Course[0].Title
I need to increment index inside []  -->
  <div class="col-md-10">
    <select class="form-control drop valid" id="Course[0].Title" name="Course[0].Title">
      <option value="1">Statistics</option>
      <option value="2">Trigonometry</option>
      <option value="3">Biology</option>
      <option value="4">Neurology</option>
      <option value="5">Applied</option>
      <option value="6">Theoretical</option>
    </select>
  </div>
</div>

Now I came up with following jQuery code. It copies only once and then stops working. I checked in console and there is no error. The javascript code with comments for clarification is as follows.

< script src = "~/Scripts/jquery-1.10.2.min.js" > < /script>
<script type="text/javascript
">
    
    $(document).ready(function () {
	//copy the section with class name unique
        var clone = $('.unique').clone();
	//Copy again as i am modifying the id,name of div with unique class
        var clone2 = $('.unique').clone();  
	//initialize the index with 1, the item with 0 index is already in webpage.
        var i = 1;
	//Change name of drop down who has class drop and assign new name
        $(".unique ").find(".drop ").attr("
name ", "
Course[0].Title ");
	//Change id of drop down who has class drop and assign new id
        $(".unique ").find(".drop ").attr("
id ", "
Course[0].Title ");
	//on click of plus button, i add clone of drop down with parent div section and with new id and name
        $("#
plus ").click(function () {
	//Add after the element which has class unique
            $('.unique').after(clone2);
	//Find name inside unique and update
            $(".unique ").find(".drop ").attr("
name ", "
Course[" + i + "].Title ");
	//Find id inside unique and update
            $(".unique ").find(".drop ").attr("
id ", "
Course[" + i + "].Title ");
	//Increment the index
            i = i + 1;
        });

    });
</script>

Whats wrong in the script?

解决方案

Is that what you wants ? There was some typo errors when setting attr("name") and attr("id")

Also here's my code to get the insert works as much as you wants :

I clone the element in the click() event to make it works.

$(document).ready(function () {
//initialize the index with 1, the item with 0 index is already in webpage.
    var i = 1;
    $("#plus").on('click', function () {
//Add after the element which has class unique
        var clone2 = $('#template').clone();  
        $("#template").after(clone2);
        $(clone2).attr('id',"template"+i);
        $(clone2).attr('name',"template"+i);
//Find name inside unique and update
        $(clone2).find(".drop ").attr("name", "Course[" + i + "].Title ");
//Find id inside unique and update
        $(clone2).find(".drop ").attr("id", "Course[" + i + "].Title ");
//Increment the index

        i++;
    });
});

See this fiddle

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