jQuery .id VS .attr('id')

JavaScript performance comparison

Test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="testDiv">
    <span id="testSpan">Test</span>
</div>

Preparation code output

Test

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Testing in unknown unknown
Test Ops/sec
.id
var id = $('#testDiv span').id;
pending…
.attr('id')
var id = $('#testDiv span').attr('id');
pending…

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