Javascript solution, extremely simple, but don't understand why it works

  • 0
     * @param {string} s
     * @param {string} p
     * @return {boolean}
    var isMatch = function(s, p) {
        var reg = new RegExp('^' + p + '$')
        return reg.test(s)

    That's all, I just add a start tag and a end tag, and it should pass the test! I don't think it should be that simple, I must have missed some test case.
    Anybody tell me where the problem is?

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