How do I use word boundaries in the RegExp object

javascript, regex, word-boundary

Solution

Escape your backslashes with backslashes so the `\b` isn't interpreted as an escape character, but rather as a literal `\b`.

var reg = new RegExp("\\bAB\\b", "g");
reg.test(' AB ');
// true
reg.test('aABb');
// false

Problem

What I want to know is how do I use word boundaries in the RegExp object. For example: ``` var reg = new RegExp("\bAB\b", "g"); ``` This is not working and I can't do: ``` var reg = /\bAB\b/g; ``` Since I will need to replace the AB with a variable later on. I know all of the other things work in the RegExp object but for some reason word boundaries don't work. Thanks for any help on this issue. :) Example: http://jsfiddle.net/7Kt5A/1/

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