Question

178

rated 0 times [ 184] [ 6] / answers: 1 / hits: 71563 / 13 Years ago, sat, august 13, 2011, 12:00:00

I have the following snippet. I want to find the appearance of a, but it does not work. How can I put the variable right?

var string1 = 'asdgghjajakhakhdsadsafdgawerwweadf';

var string2 = 'a';

string1.match('/' + string2 + '/g').length;

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Location: Belarus

Member since Sat, Jul 18, 2020

4 Years ago

answered 13 Years ago cartersinceren · Accepted Answer

You need to use the RegExp constructor instead of a regex literal.

var string = 'asdgghjjkhkh';

var string2 = 'a';

var regex = new RegExp( string2, 'g' );

string.match(regex);

If you didn't need the global modifier, then you could just pass string2, and .match() will create the regex for you.

string.match( string2 );