Question

40

rated 0 times [ 46] [ 6] / answers: 1 / hits: 101969 / 14 Years ago, mon, april 26, 2010, 12:00:00

How to create regex pattern which is concatenate with variable, something like this:

var test =52;

var re = new RegExp(/b+test+b/); 

alert('51,52,53'.match(re));

Thanks

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answered 14 Years ago lelasamiraa · Accepted Answer

var re = new RegExp(/b+test+b/);

b in a string literal is a backspace character. When putting a regex in a string literal you need one more round of escaping:

var re = new RegExp(\b+test+\b);

(You also don't need the // in this context.)