Fastest way to test two strings for exact match in JavaScript

javascript string-matching
atreju picture atreju · Sep 3, 2013 · Viewed 46.9k times · Source

I want to compare two strings in JavaScript to test if they are exactly the same. Which 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 do to this?

Answer

Andy picture Andy · Sep 3, 2013

I would probably use strict equality if you want to check they are exactly the same, ie they're the same type too, just in case.

if (string1 === string2)

Related questions

How to check whether a string contains a substring in JavaScript?

Usually I would expect a String.contains() method, but there doesn't seem to be one. What is a reasonable way to check for this?

Read More
javascript regular expression to check for IP addresses

I have several ip addresses like: 115.42.150.37 115.42.150.38 115.42.150.50 What type of regular expression should I write if I want to search for the all the 3 ip addresses? Eg, if I do 115.42.150.* (I will be able to search for all 3 ip addresses) What …

Read More
Return positions of a regex match() in Javascript?

Is there a way to retrieve the (starting) character positions inside a string of the results of a regex match() in Javascript?

Read More