如何在javascript中添加克隆计数器ID

Question

我不知道该把计数器放在哪里; 接下来的克隆ID必须gender_1

例子：

<select id="gender">

Next is: 
`<select id="gender_1">` 

then: 
`<select id="gender_2">` 

https://jsfiddle.net/f7hjh1gf/6/

Answer 1

试试这个，才追加到您需要更换使用find()克隆所选元素id元素功能并更新id递增使用c++

Updated jsfiddle

$(document).ready(function(){ 
var c=1; 
    $(document).on('click', '#mode', function(){ 
     $("#notok").clone(true).find('select').attr('id','gender_'+(c++)).closest('.ok').appendTo("#clones"); 
    }); 
}); 

Answer 2

每次你添加一个克隆获得的克隆数已经存在，并加入到“gender_”，你可以用$("#clones div").length获得当前存在的克隆数由前一个加一。

$(document).ready(function(){ 
 
    $(document).on('click', '#mode', function(){ 
 
     $("#notok").clone(true).attr('id', "gender_"+($("#clones div").length + 1)).appendTo("#clones"); 
 
    }); 
 
});

<div class="container"> 
 

 
<div class="ok" id="notok"> 
 
\t <select id="gender"> 
 
    \t <option value="Male">Male</option> 
 
     <option value="Female">Female</option> 
 
    </select> 
 

 
    
 
</div> 
 

 
<div id=clones></div> 
 

 
<button id="mode">Clone</button> 
 

 

 
    
 

 
    <!-- Modal --> 
 
    <div class="modal fade" id="myModal" role="dialog"> 
 
<div class="modal-dialog"> 
 

 
    <!-- Modal content--> 
 
    <div class="modal-content"> 
 
    <div class="modal-header"> 
 
     <button type="button" class="close" data-dismiss="modal">&times;</button> 
 
     <h4 class="modal-title">Modal Header</h4> 
 
    </div> 
 
    <div class="modal-body"> 
 
     <p>Some text in the modal.</p> 
 
    </div> 
 
    <div class="modal-footer"> 
 
     <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> 
 
    </div> 
 
    </div> 
 
    
 
</div> 
 
    </div> 
 
    
 
</div> 
 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>