How to check if string is present in variable in jquery

Question

I have the variable like

var myVar = "The man is running"

pattern = "run"

I want to check via jquery that if it conatins words "run"

Like

if($(myVar).(:contains(pattern)))
return true

Is this possible

I feel I should recommend that you review the difference between JavaScript and jQuery. Here you can read up on JavaScript. Here you can read up on jQuery. — Zhihao
– Zhihao, Commented Jul 31, 2012 at 3:56
Check this: @john110016 check stackoverflow.com/questions/4581625/… is exactly like your questions — Marco Pappalardo
– Marco Pappalardo, Commented Jul 31, 2012 at 3:58

Ohgodwhy · Accepted Answer · 2020-05-15 21:21:44Z

24

RegExp option...just because..RegExp.

var pattern = /run/;

//returns true or false...
var exists = pattern.test(myVar);

if (exists) {
  //true statement, do whatever
} else {
  //false statement..do whatever
}

edited May 15, 2020 at 21:21

answered Jul 31, 2012 at 4:03

Ohgodwhy

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Comments

jeff · Accepted Answer · 2012-07-31 03:53:50Z

13

You would use the Javascript method .indexOf() to do this. If you're trying to test whether the text of a DOM element contains the pattern, you would use this:

if($(myVar).text().indexOf(pattern) != -1)
    return true;

If the variable myVar isn't a selector string, you shouldn't wrap it in the jQuery function, though. Instead, you would use this:

if(myVar.indexOf(pattern) != -1)
    return true;

answered Jul 31, 2012 at 3:53

jeff

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Comments

Paul Armstrong · Accepted Answer · 2012-07-31 03:55:40Z

1

You do not need jQuery for this. Just check for the index of the string.

if (myVar.indexOf(pattern) !== -1) { ... }

answered Jul 31, 2012 at 3:55

Paul Armstrong

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Comments

elclanrs · Accepted Answer · 2012-07-31 03:57:29Z

0

Regex?

var hasRun = /run/i.test(myVar) // case insensitive

answered Jul 31, 2012 at 3:57

elclanrs

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2 Comments

jeff Over a year ago

A regex has unnecessary overhead for such a simple operation, though.

elclanrs Over a year ago

Yeah, it's probably slower than indexOf but an option nonetheless and more readable, at least IMO.

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