Check if a single character is a whitespace?
javascript
Solution
If you only want to test for certain whitespace characters, do so manually, otherwise, use a regular expression, ie
/\s/.test(ch)
Keep in mind that different browsers match different characters, eg in Firefox, `\s` is equivalent to (source)
[ \f\n\r\t\v\u00A0\u2028\u2029]
whereas in Internet Explorer, it should be (source)
[ \f\n\r\t\v]
The MSDN page actually forgot the space ;)
Problem
What is the best way to check if a single character is a whitespace? I know how to check this through a regex. But I am not sure if this is the best way if I only have a single character. Isn't there a better way (concerning performance) for checking if it's a whitespace? If I do something like this. I would miss white spaces like tabs I guess? ``` if (ch == ' ') { ... } ```