Fastest way to check two lines for exact match in JavaScript

Question

I want to compare two lines in JavaScript to check if they are the same. What would be the best (fastest) way to do this?

Right now, I'm considering either

if(string1.localeCompare(string2) == 0) {}

or simply

 if(string1 == string2)

Is there a better way to do this?

+7

javascript string-matching

atreju Sep 03 '13 at 9:02

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4 answers

Check this script * and find out which one is faster.

* In case the link will be in the future: == > === > String.localeCompare (tested in Chrome).

+4

Savas vedova Sep 03 '13 at 9:18

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I'm not sure if there is an opportunity to optimize if(string1 == string2) . This is the best approach.

+1

Kevin bowersox Sep 03 '13 at 9:04

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 if (typeof string1=="string" && typeof string2=="string" && string1 === string2)

no evacuation method :)

+1

kangoroo Sep 03 '13 at 9:18

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Andy · Accepted Answer · 2013-09-03T09:10:21+0000

I would probably use strict equality if you want to verify that they are exactly the same, i.e. they are also of the same type, just in case.

 if (string1 === string2)