gistfile1.txt

/(\bcss3|svg\b)+|https?:\/\/(www\.)?\w+\.\w+\/(\-css3|svg\-)/ig

var reg = new RegExp("/(\bcss3|svg\b)+|https?://(www.)?\w+.\w+\/(-css3|svg-)/ig");
reg.test("I love this thing about SVG. http://foo.com/article"); // returns false, should return true
reg.test("This is awesome http://super-awesome-svg.com"); // returns false, should return true
reg.test("I <3 this css3 button thing http://codepen.com/abcdefg"); // returns false, should return true
reg.test("This is a thing we are testing. It should not match this http://t.co/ifesVgief"); // returns false
reg.test("Boogy buggy booger. It should not match this http://t.co/ewfijCSs3few"); // returns false

var reg = new RegExp(/(\bcss3|svg\b)+|https?:\/\/(www.)?\w+.\w+\/(-css3|svg-)/ig);

Regular Expressions don't get quoted when you're passing it into RegExp

Oops! Awesome you're amazing!!