class or speed

JavaScript performance comparison

Test case created

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<a class="teste" id="new_item_buttom" href="#"></a>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
no var
if (!($("#new_item_buttom").val()== "teste")) {
    $("#new_item_buttom").attr("class", "active");
}
pending…
var implicit
datatable=$("#new_item_buttom")
if (!(datatable.val()== "teste")) {
    datatable.attr("class", "active");
}
pending…
var explicit
var datatable=$("#new_item_buttom")
if (!(datatable.val()== "teste")) {
    datatable.attr("class", "active");
}
pending…

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