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JS 昵称,手机号,邮箱判断

    <script type="text/javascript">var leyou = document.getElementById(J-leyou),    _name = document.getElementById(J-name),    mobile = document.getElementById(J-mobile),    email = document.getElementById(J-email);leyou.onsubmit = function() {    console.log(_name.value);    if (_name.value === ‘‘) {    alert(昵称不能为空);    return false;    }    if (mobile.value === ‘‘) {    alert(手机号码不能为空);    return false;    } else if (mobile.value.length < 11 || !/^(13[0-9]|15[0|3|6|7|8|9]|18[8|9])\d{8}$/.test(mobile.value)) {    alert(手机号码格式不正确,请重新填写。);    return false;    }    if (email.value === ‘‘) {    alert(E-mail 不能为空);    return false;    } else if (!/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(email.value)) {    alert(E-mail 格式不正确,请重新填写。);    return false;    }};        </script>

 

JS 昵称,手机号,邮箱判断