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练习

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var usernameRe = /\w{3,10}/;
var passwdRe = /.{6,20}/;

var pwd1 = document.getElementById('password');
var pwd2 = document.getElementById('password-2');

return (usernameRe.test(document.querySelector('#username').value) &&
        passwdRe.test(document.querySelector('#password').value) &&
        pwd1.value === pwd2.value
       );
}

之前明明都对可就是通不过,后来发现是因为正则表达式{3,10}逗号后面不能有空格


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