'use strict'; var checkRegisterForm = function () { var userNameReg = /^[a-zA-Z0-9]{3,10}$/; var passwordReg = /^.{6,20}$/; var username = document.getElementById("username"); var password = document.getElementById("password"); var password2 = document.getElementById("password-2"); if(userNameReg.test(username.value) && passwordReg.test(password.value) && password.value == password2.value){ alert("测试通过"); return true; } alert("测试不通过"); return false; }