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Wacky JavaScript RegExp global modifier
Can anyone explain this?
var s1 = "http://www.youtube.com/watch?v=hMtZfW2z9dw"; var re1 = /^(?:(?:https?\:\/\/)?(?:www\.)?)?youtube\.com\/watch[a-zA-Z0-9_\-\?\&\=\/]+/g; console.log(re1.test(s1)); // true console.log(re1.test(s1)); // false console.log(re1.test(s1)); // true console.log(re1.test(s1)); // false console.log(re1.test(s1)); // true console.log(re1.test(s1)); // false console.log(re1.test(s1)); // true var re2 = /^(?:(?:https?\:\/\/)?(?:www\.)?)?youtube\.com\/watch[a-zA-Z0-9_\-\?\&\=\/]+/; console.log(re2.test(s1)); // true console.log(re2.test(s1)); // true console.log(re2.test(s1)); // true console.log(re2.test(s1)); // true console.log(re2.test(s1)); // true console.log(re2.test(s1)); // true