javascript - Trimming whitespace from the END of a string only, with jQuery - Stack Overflow

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I know of the jQuery $.trim() function, but what I need is a way to trim whitespace from the END of a string only, and NOT the beginning too.

So

  str ="     this is a string     ";

would become

  str ="     this is a string";

Any suggestions?

Thanks!

I know of the jQuery $.trim() function, but what I need is a way to trim whitespace from the END of a string only, and NOT the beginning too.

So

  str ="     this is a string     ";

would become

  str ="     this is a string";

Any suggestions?

Thanks!

• javascript
• jquery
• trim

Share Improve this question Follow asked Jul 30, 2013 at 4:14 Sharon SSharon S 36522 gold badges33 silver badges1010 bronze badges

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2 Answers 2

Sorted by: Reset to default 42

You can use a regex:

str = str.replace(/\s*$/,"");

It says replace all whitespace at the end of the string with an empty string.

Breakdown:

• \s* : Any number of spaces
• $ : The end of the string

More on regular expressions:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions

For some browsers you can use: str = str.trimRight(); or str = str.trimEnd();

If you want total browser coverage, use regex.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/trimEnd

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