Javascript replace all in substring with special characters

Question

I need to replace ALL occurrences of '|B' with '' I've tried using 'replace' which only replaces the first occurrence in a string, and both of the following ReplaceAll prototypes neither of which produce the desired result:

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.replace(new RegExp(search, 'g'), replacement);
};

and

String.prototype.replaceAll = function(search, replacement) {
    var target = this;
    return target.split(search).join(replacement);
};

Any assistance is greatly appreciated!

The pipe has special meaning in the RegEx, that should be escaped by preceding a backslash `\|B`. — Tushar, Feb 29 '16 at 14:32

score 1 · Accepted Answer · edited May 23 '17 at 12:31

1

When you create a RegExp from an expression, you could have characters that need to be escaped so they are not treated as RegExp. In your case, the | is a special character in regular expressions.

See Is there a RegExp.escape function in Javascript?

// Shamelessly copy/pasted from the link above
RegExp.escape = function(s) {
    return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
};

String.prototype.replaceAll = function(search, replacement) {
    return this.replace(new RegExp(RegExp.escape(search), 'g'), replacement);
};

edited May 23 '17 at 12:31

Community

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answered Feb 29 '16 at 14:36

Ruan Mendes

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Thanks! This worked perfectly! – Rani Radcliff Feb 29 '16 at 15:17

Javascript replace all in substring with special characters

1 Answers1