How to use trim in javascript

This article mainly introduces how to use trim in javascript, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

The javascript trim method is used to remove the leading and trailing blank characters of a string, its syntax is "string.trim ()", and the return value is the string that removes the leading and trailing spaces.

This article operating environment: Windows7 system, javascript1.8.5 version, DELL G3 computer

What is the use of javascript trim?

JavaScript trim () method:

The trim () method is used to remove the leading and trailing white space characters of a string, which include: spaces, tabs tab, newline characters, and so on.

The trim () method does not change the original string.

The trim () method does not apply to null, undefined, Number types.

Grammar

String.trim ()

Return value

String, which returns the string that removes the leading and trailing spaces.

Example

If your browser does not support the trim () method, you can use regular expressions to do so:

Function myTrim (x) {return x.replace (/ ^\ s + |\ ssteps Universalgm law');} function myFunction () {var str = myTrim ("Runoob"); alert (str);}

Output result:

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