<script Language="JavaScript" Type="text/javascript">

function check(){

if (document.form1.hy_mobile.value == ""){

layer.open({

<script Language="JavaScript" Type="text/javascript">

function check(){

if (document.form1.userID.value == ""){

layer.open({

content: '手机号码必须正确输入'

,skin: 'msg'

js判断表单是否输入电话手机是正否正确,下拉框是否选择等layer弹窗

<script Language="JavaScript" Type="text/javascript">

function check(){

if (document.dkcms.bx_start.value == "")

<script> 

function checkMobile(){ 

    var sMobile = document.mobileform.mobile.value 

    if(!(/^1[3|5|7|8][0-9]\d{4,8}$/.test(sMobile))){ 

        alert("不是完整的11位手机号或者正确的手机号前七位"); 

<script Language="JavaScript" Type="text/javascript">

function check()

{

if (document.form1.hy_user.value == "")

onclick="javascript:window.history.back(-1);"

方法一、以按钮点击的方式实现：

<input type="button" name="Submit" value="返回上一页" onclick="javascript:window.history.back(-1);">

<form name="dkcms" action="?action=save_add" method="post" onSubmit="return check();">

<input type="checkbox" id="xieyi" />

function check()

<form name="form1" action="/member/reg.asp?action=save" method="post" onSubmit="return check();">

<ul class="reghy">

<script type="text/javascript">

    $(function(){

        var logoImgs = ['static/images/logo.png','static/images/guoan.gif'];

        var logoUrls = ['index.htm','act/guanjun.htm']

第一步

<script type="text/javascript">

function caoc(anconr,ancobt)

{

var cao4=document.getElementById('tex5');

cao4.innerHTML=anconr;