Remove all multiple spaces in Javascript and replace with single space [duplicate]

This question already has answers here: Regex to replace multiple spaces with a single space (26 answers) Closed 8 years ago.

How can I automatically replace all instances of multiple spaces, with a single space, in Javascript?

I've tried chaining开发者_开发知识库 some s.replace but this doesn't seem optimal.

I'm using jQuery as well, in case it's a builtin functionality.

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You could use a regular expression replace:

str = str.replace(/ +(?= )/g,'');

Credit: The above regex was taken from Regex to replace multiple spaces with a single space

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There are a lot of options for regular expressions you could use to accomplish this. One example that will perform well is:

str.replace( /\s\s+/g, ' ' )

See this question for a full discussion on this exact problem: Regex to replace multiple spaces with a single space

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you all forget about quantifier n{X,} http://www.w3schools.com/jsref/jsref_regexp_nxcomma.asp

here best solution

str = str.replace(/\s{2,}/g, ' ');

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You can also replace without a regular expression.

while(str.indexOf('  ')!=-1)str.replace('  ',' ');