Regular Expression: Any character that is NOT a letter or number

Question

I'm trying to figure out the regular expression that will match any character that is not a letter or a number. So characters such as (,,@,£,() etc ...

Once found I want to replace it with a blank space.

Any advice.

Answer 1

To match anything other than letter or number you could try this:

[^a-zA-Z0-9]

And to replace:

var str = 'dfj,dsf7lfsd .sdklfj';
str = str.replace(/[^A-Za-z0-9]/g, ' ');

Answer 2

you are looking for:

var yourVar = '1324567890abc§$)%';
yourVar = yourVar.replace(/[^a-zA-Z0-9]/g, ' ');

This replaces all non-alphanumeric characters with a space.

The "g" on the end replaces all occurences.

Instead of specifying a-z (lower case) and A-Z (upper case) you can also use the in-case-sensitive option: /^[a-z0-9]/gi.

Answer 3

This regular expression match not letters, digits, and underscores chars.

\W

For example in javascript:

"(,,@,£,() asdf 345345".replace(/\W/g, ' ');