function isEmail(obj) { reg = /^\w{3,}@\w+(\.\w+)+$/; $("#emailSure").removeClass('imgSure'); if (!reg.test(obj)) { $("#emailSure").attr("src", "img/error.png"); } else { $("#emailSure").attr("src", "img/success.png"); } } function isUserName(obj) { reg = /^[a-z,A-Z]+$/; $("#userSure").removeClass('imgSure'); if (!reg.test(obj)) { $("#userSure").attr("src", "img/error.png"); } else { $("#userSure").attr("src", "img/success.png"); } } function isPassword(obj) { reg =/^[a-z,A-Z]w{5,17}$/; $("#passSure").removeClass('imgSure'); if (!reg.test(obj)) { $("#passSure").attr("src", "img/error.png"); } else { $("#passSure").attr("src", "img/success.png"); } } function affirm(obj) { reg=/^[a-z,A-Z]w{5,17}$/; reg1 = $("#password1")[0].value; reg2 = $("#password2")[0].value; $("#passSure1").removeClass('imgSure'); if (reg1 != reg2||!reg.test(obj)) { $("#passSure1").attr("src", "img/error.png"); } else { $("#passSure1").attr("src", "img/success.png"); } }