JavaScript RegExp b Metacharacter
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JavaScript RegExp b Metacharacter
❮ JavaScript RegExp Object
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;
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The marked text below shows where the expression gets a match:
Visit W3Schools
Try it Yourself »
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.
Browser Support
| Expression | |||||
|---|---|---|---|---|---|
| b | Yes | Yes | Yes | Yes | Yes |
Syntax
new RegExp("\bregexp")
or simply:
/bregexp/
Syntax with modifiers
new RegExp("\bregexp", "g")
or simply:
/bregexp/g❮ JavaScript RegExp Object
