javascript - Replace all whitespace characters

Question

I want to replace all occurrences of white space characters (space, tab, newline) in JavaScript.
How to do so?

I tried:

str.replace(/ /gi, "X")

Answer 1

You want s

Matches a single white space character, including space, tab, form feed, line feed.

Equivalent to

[ f

vu00a0u1680u2000-u200au2028u2029u202fu205fu3000ufeff]

in Firefox and [ f v] in IE.

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str = str.replace(/s/g, "X");