How can I check if a javascript variable contains a string or not?

Question

I have a variable: $form.attr('action') that contains one of the following:

action="/Administration/Contents/JsonCreate"
action="/Administration/Contents/JsonEdit"
action="/Administration/Contents/JsonDelete"

How can I with an if () statement check to see if it contains the word "JsonEdit" ?

The Codesee · Accepted Answer · 2018-01-01 19:51:21Z

12

Use indexOf():

var str = $form.attr('action');

if(str.indexOf("JsonEdit")>=0){
    //do something you want
}

The Codesee

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answered Apr 27, 2012 at 5:31

Nagaraju Badaeni

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Comments

Joseph · Accepted Answer · 2012-04-27 05:35:25Z

1

You can use RegExp test to check if you have something there. test returns true if a match is found, and false if not.

if(/JsonEdit/.test(action)){
    //there is something
}

answered Apr 27, 2012 at 5:30

Joseph

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I'd say a regex is not appropriate but overkill if you just want to check if a certain static string is inside another string.

@ThiefMaster—overkill? Hardly, but indexof is a lot faster (not that anyone would notice for a one-off).