Given a string, how do I strip out all the symbols and keep only alphabets and numbers? [closed]

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Closed 9 years ago.开发者_运维百科

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Hello$Barbie^._9

How do i turn that into:

HelloBarbie9

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DEMO HERE

var re = /[_\W]/g; 

var str = "Hello$Barbie^._9";
str = str.replace(re,"");

\W means anything BUT characters (case INsensitive), numbers AND underscore, so we need to add the underscore

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With something like this:

'Hello$Barbie^._9'.replace(/[^A-Za-z0-9]/g, '') // returns "HelloBarbie9"

-- For Comments --

In fact there is a flag for case insensitivity. It's i. So that would be come:

'Hello$Barbie^._9'.replace(/[^a-z0-9]/ig, '') // returns "HelloBarbie9"

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var str = "Hello$Barbie^._9"; str = str.replace(/[^a-zA-Z0-9]/g);