javascript - Replace all whitespace characters

itemprop="text">

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")

class="post-text" itemprop="text">

class="normal">Answer

You want
href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions"
rel="noreferrer">\s

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

Equivalent
to

[
            \f\n\r\t\v\u00a0\u1680\u2000-\u200a\u2028\u2029\u202f\u205f\u3000\ufeff]

in
href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#special-white-space"
rel="noreferrer">Firefox and [ \f\n\r\t\v] in
rel="noreferrer">IE.

/>

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