Javascript: RegExp not working no matter what my expression is

Question

Ok, I've been using RegExp a number of times but for some reason I cannot get it to work this time. I am trying to test for latitude (0 to +/- 90 degrees). No matter what expression I use, it always returns false. Here's my code:

var regexLatitude = new RegExp("^-?([1-8]?[0-9]\.{1}\d{1,6}$|90\.{1}0{1,6}$)");
var status = regexLatitude.test("89.5");

I also tried without quotes:

var status = regexLatitude.test(89.5);

Any idea?

SLaks · Accepted Answer · 2012-07-05 15:19:08Z

2

Your \ characters are being parsed by the Javascript string literal.

You need to use a regex literal:

var regexLatitude = /^-?([1-8]?[0-9]\.{1}\d{1,6}$|90\.{1}0{1,6}$)/;

answered Jul 5, 2012 at 15:19

SLaks

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1 Comment

Johann Over a year ago

mellamokb: You're right. I need a double slash. SLaks solution is also good.

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