How do I pass function parameters into a regex query?

Question

How would I go about passing function parameters into a regex query? Many thanks.

function match(str, arg1, arg2){
   var result = str.match(/(arg1 | arg2)/m);
   log(result) //null
}

match('claire nick steve', 'nick','steve');

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SLaks
– SLaks

2010-08-06 10:37:05 +00:00
Commented Aug 6, 2010 at 10:37 — SLaks
– SLaks, Commented Aug 6, 2010 at 10:37

SLaks · Accepted Answer · 2010-08-06 10:18:30Z

1

You need to pass a normal string to the Regex constructor, like this:

var result = str.match(new Regex("(" + arg1 + "|" + arg2 + ")", "m");

If you use backslashes in the regex, you'll need to escape them (\\) since it's normal string literal.

answered Aug 6, 2010 at 10:18

SLaks

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Alex · Accepted Answer · 2010-08-06 10:16:36Z

1

http://www.regular-expressions.info/javascript.html

you are using a literal, try initializing the object with new RegExp("your string");

answered Aug 6, 2010 at 10:16

Alex

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Zimbabao · Accepted Answer · 2010-08-06 10:22:56Z

0

function match(str, arg1, arg2){
   var re=new RegExp("(" + arg1 + "|" + arg2 +")","m");
   var result = str.match(re);
   log(result) //null
}

match('claire nick steve', 'nick','steve');

answered Aug 6, 2010 at 10:22

Zimbabao

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