What happens if valid id name not provide in selector using jquery and when we get undefined and null error in jquery?

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what happens if valid id name does not provide in selector using jquery and when we get an undefined and null error in jquery?

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I did not get any valid answer!
I which scenario using jquery we get undefined and null error?

Posted 10-Sep-19 4:24am

verma.vivek

Updated 10-Sep-19 4:44am

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MadMyche 10-Sep-19 10:34am

You may want to provide the code in question (both the JS/JQuery AND the HTML) and work on explaining your question better.

verma.vivek 10-Sep-19 10:38am

I want in details theory that when we have to get an undefined and null error.

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Richard Deeming · Answer 1 · 2019-09-10T04:45:00

Solution 1

If the selector you pass to jQuery doesn't match any elements, you will get an empty jQuery object back. You will not get any "undefined" or "null" errors by calling jQuery methods on that empty jQuery object.

Demo[^]

Posted 10-Sep-19 4:45am

Richard Deeming