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Editorial Team
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Asked: 2026-05-13T12:24:46+00:00

If jQuery is included in <head> and in <head> if we have some another

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If jQuery is included in <head> and in <head> if we have some another jQuery code and that code has an id which is a id of an HTML element, so if jQuery library and jquery code in <head> is added globally

And if any page doesn’t have that html element which is used by jQuery code then browser gives JavaScript error.

Can I make jQuery/JavaScript code like, if jQuery finds an HTML element with id in <body> then it should work fine.

If another page doesn’t have that HTML element with id then I know jQuery will not work.

But what I want:

An error should not be thrown if a page doesn’t have an HTML element with the given id.

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1 Answer

  1. Editorial Team

    A lot of jQuery code works like this already, as it is set-based, and you can do operations on sets of 0 elements. I.e. these will always work, regardless of whether or not the selector matches any elements:

    $('#myButton').click(function() { ... });
$('#somethingElse').hide();

    In some cases you really do need a reference to at least one element, however, for the rest of the script to work. In these cases, you have to manually check that the element exists:

    if($('#myElement').length == 0) return false; // or similar...
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