05

Feb

jQuery DOM exists check

Posted by Admun  Tags: ,
Question of the day at work: How can I tell id a selector find something, or a particular DOM element exists?

It turns out that $() always return a object, which has a .length can be used to see if something has found.

So, I can do something like:


if ($('something').length > 0) {

  alert('The DOM element has found!');

}

There is one more way to archive the same:


if ($('something').is('*') != '') {

  alert('The DOM element has found!');

}

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