remove extra spaces in string javascript

问题

what function will turn

 this contains       spaces 

into

this contains spaces

using javascript?

I've tried the following, using similar SO questions, but could not get this to work.

var string = " this contains   spaces ";

newString = string.replace(/\s+/g,''); // "thiscontainsspaces"
newString = string.replace(/ +/g,'');  //"thiscontainsspaces"

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Edited the question to focus more on the javascript aspect. Is there a simple pure javascript way to accomplish this?

回答1:

You're close.

Remember that replace replaces the found text with the second argument. So:

newString = string.replace(/\s+/g,''); // "thiscontainsspaces"

Finds any number of sequential spaces and removes them. Try replacing them with a single space instead!

newString = string.replace(/\s+/g,' ').trim();

回答2:

string.replace(/\s+/g, ' ').trim()

回答3:

I figured out one way, but am curious if there is a better way...

string.replace(/\s+/g,' ').trim()

回答4:

Try this one, this will replace 2 or 2+ white space from string.

string.replace(/\s{2,}/g, '')

来源：https://stackoverflow.com/questions/16974664/remove-extra-spaces-in-string-javascript