Question

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How to output integers with leading zeros in JavaScript

I have a function increment, it increments value by 1 on mouse click. But i want it to increment from 00001 to 00002 on mouse click and 00003 etc so on…on each mouse click.

<script type="text/javascript">
$(document).ready(function(){
    var count = 00001;
    $('#increment').click(function (e) {
        e.preventDefault();
        count++;
        $('p').text(count);
    });
});
</script>


<p>00001</p>
<input type="button" value="Increment" id="increment"/>

Help me please,

Thanks,

Answer 1

var count = 0,
    pad = '00000';
$('#increment').click(function(e) {
    e.preventDefault();
    count++;
    var ctxt = '' + count;
    $('p').text(pad.substr(0, pad.length - ctxt.length) + ctxt);
});​

DEMO