How to compare two regexps?

"Problem":

regex is an object- a reference type, so the comparsion is done by reference, and those are two different objects.

console.log(typeof /a/); // "object"

If both operands are objects, then JavaScript compares internal references which are equal when operands refer to the same object in memory.

Solution:

var a = /a/;
var b = /a/;
console.log(a.toString() === b.toString()); // true! yessss!

Another "hack" to force the toString() on the regexes is:

console.log(a + "" === b + "");

answered 2012-06-14T12:13:00.987

1 Answer