JavaScript - remove space after a specific char

Question

I've found many solutions in JavaScript to remove all spaces in a string with \s. But I can't found a solution for my specific problem. I want to transform "2* 2 +3* 5" in "2*2+3*5" (no more space after '*'), I've tried with

mot = mot.replace(/*\s/g, '*');

But it doesn't work, does anyone have the answer?

Francisco Paulo · Accepted Answer · 2013-05-11 09:44:03Z

1

You need to escape the * character.

Try this: "2* 2 +3* 5".replace(/\*\s/g,'*')

answered May 11, 2013 at 9:44

Francisco Paulo

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PurkkaKoodari · Accepted Answer · 2013-05-11 09:46:24Z

0

mot = mot.replace(/(\*)\s/g, "$1");

Note that you have to use \ before a * because * is a reserved character. With this, you can also add more characters with no whitespace allowed after, like * and + here:

mot = mot.replace(/([*+])\s/g, "$1");

Now that the * is in a [] you don't need to esacpe it. And lastly, to remove multiple whitespaces at once, use

mot = mot.replace(/([*+])\s+/g, "$1");

answered May 11, 2013 at 9:46

PurkkaKoodari

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