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Can be accessed at:
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The quickEach
method will pass a non-unique jQuery
instance to the callback meaning that there will be no need to instantiate a fresh jQuery
instance on each iteration. Most of the slow-down inherent in jQuery’s native iterator method (each
) is the constant need to have access to jQuery’s methods, and so most developers see constructing multiple instances as no issue… A better approach would be quickEach
.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
var a = $('<div/>').append(Array(100).join('<a></a>')).find('a');
jQuery.fn.quickEach = (function() {
var jq = jQuery([1]);
return function(c) {
var i = -1,
el, len = this.length;
try {
while (++i < len && (el = jq[0] = this[i]) && c.call(jq, i, el) !== false);
} catch (e) {
delete jq[0];
throw e;
}
delete jq[0];
return this;
};
}());
</script>
Ready to run.
Test | Ops/sec | |
---|---|---|
.each() |
| ready |
.quickEach() |
| ready |
native forEach |
| ready |
native forEach with cache |
| ready |
You can edit these tests or add more tests to this page by appending /edit to the URL.