Check if jQuery object has html element in it

Question

Maybe I miss something but anywhere I read it is suggested that if I want to check whether a jQuery constructor returns a jQuery object is done by:

if(jQuery('.something').length){...}

but how would I validate if it is an html element in the jQuery object that it returns?

what I mean is that this also returns true:

if(jQuery(44551).length){...}

although it returns jQuery object it doesn't have html element in it.

but what if I provide a number to the jQuery constructor, it won't return html element. — Dima Gimburg
– Dima Gimburg, Commented Aug 28, 2017 at 8:50

adeneo · Accepted Answer · 2017-08-28 08:44:32Z

2

You could use is() to check if the collection contains an element matching a certain selector

var someelement = $(....); // unknown

if ( someelement.is('.something') ) {...

Check the current matched set of elements against a selector, element, or jQuery object and return true if at least one of these elements matches the given arguments.

answered Aug 28, 2017 at 8:44

adeneo

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1 Comment

Dima Gimburg Over a year ago

ok that solves my problem. $('.never-mind').is('.never-mind') returns true (of course after validating that .never-mind exists), and $(555).is(555) returns false. thank you mate

Stuart · Accepted Answer · 2017-08-28 08:43:15Z

0

To check if there are html elements inside a jQuery element, then do:

if ( $('.el').html().length ) { ...

answered Aug 28, 2017 at 8:43

Stuart

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1 Comment

Dima Gimburg Over a year ago

if I provide a number to the jQuery selector your code throws an error, I could wrap it in a try-catch statement, but @adeneo's solution is simpler. thanks though.

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