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JavaScript RegExp \b Metacharacter

RegExp Object Reference JavaScript RegExp Object

Definition and Usage

The \b metacharacter is used to find a match at the beginning or end of a word.

If no match is found, it returns null.

Syntax

new RegExp("\bregexp")

or simply:

/\bregexp/

Example

Example

Do a global search for "W3" at the beginning or end of a word in a string:

var str="Visit W3Schools";
var patt1=/\bW3/g;

The marked text below shows where the expression gets a match:

Visit W3Schools

Try it yourself »

RegExp Object Reference JavaScript RegExp Object

From http://www.w3schools.com (Copyright Refsnes Data)