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clonenode - Cloning elements [div] [script] in Javascript - Stack Overflow

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I'm trying to clone a div in pure Javascript, however, cloneNode leads to duplicate ids (div_0). I would like to increment the id as div_1, div_2... and do the same to somevar = {'elem', 'div_1'}... Thanks

<html>
<head></head>
<body>
<div id="mydiv">
    <div id="div_0">
        <script type="text/javascript">
            <!--
            somevar = {'elem', 'div_0'};
            //-->
        </script>
        <p>HELLO</p>
    </div>
</div>

<a href="#" onclick="cloning()">CLONE</a>

<script type="text/javascript">
    function cloning() {
        var container = document.getElementById('mydiv');
        var clone = document.getElementById('div_0').cloneNode(true);
        container.appendChild (clone);
    }
</script>
</body>
</html>

I'm trying to clone a div in pure Javascript, however, cloneNode leads to duplicate ids (div_0). I would like to increment the id as div_1, div_2... and do the same to somevar = {'elem', 'div_1'}... Thanks

<html>
<head></head>
<body>
<div id="mydiv">
    <div id="div_0">
        <script type="text/javascript">
            <!--
            somevar = {'elem', 'div_0'};
            //-->
        </script>
        <p>HELLO</p>
    </div>
</div>

<a href="#" onclick="cloning()">CLONE</a>

<script type="text/javascript">
    function cloning() {
        var container = document.getElementById('mydiv');
        var clone = document.getElementById('div_0').cloneNode(true);
        container.appendChild (clone);
    }
</script>
</body>
</html>
Share Improve this question asked Jan 11, 2011 at 17:04 MikeMike 311 silver badge2 bronze badges 3
  • What do you mean do the same in somevar? – meder omuraliev Commented Jan 11, 2011 at 17:29
  • basically is just a var that holds the value of the parent div. please, omit the name – Mike Commented Jan 11, 2011 at 17:30
  • You need to be more specific. Please show end result of the somevar object after a new div has been closed. Please do not assume that I know what you want. By the way, that syntax is invalid. It has to be a key:value or you have to make it an array. – meder omuraliev Commented Jan 11, 2011 at 17:45
Add a ment  | 

3 Answers 3

Reset to default 4

Try this..

`

function cloning() {
    var container = document.getElementById('mydiv');
    var clone = document.getElementById('div_0').cloneNode(true);
    clone.setAttribute('id','div_'+document.getElementById('mydiv').getElementsByTagName('div').length);
    container.appendChild (clone);
}

`

Set counter=0 and then increment after each cloning invocation with counter++ and use clone.id and set it to 'div_' + counter

I haven't had a chance to test this, but this might do the trick:

function cloning (e) {
    if (typeof e === 'string') {
        e = document.getElementById(e);
    }

    var clone = e.cloneNode(true),
        last_inc = cloning.last_inc || parseInt(e.id.match(/(\d+)$/)[0], 10);

    last_inc += 1;

    clone.id = 'div_' + last_inc;
    cloning.last_inc = last_inc;

    e.parentNode.appendChild(clone);
}

If you want to update a global variable somewhere, you can do return { "elem" : "div_" + last_inc }; and assign the result of the function. Or instead of a return, you could explicitly make the assignment. I'd remend the former.

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