非空验证
<body> <table> <tr> <td>姓名：</td> <td><input type="text" name="TrueName" id="TrueName" /></td> </tr> ....省略其他input <tr> <td colspan="2"> <input type="submit" value="submit" οnclick="return check();" /> </td> </tr> </table>
</body>
<script language="JavaScript"> function Check() { if(document.getElementById('TrueName').value=='') { alert('必须输入姓名！'); document.getElementById('TrueName').focus(); return false; }
if(document.getElementById('Identity').value=='') { alert('必须输入身份证号码！'); document.getElementById('Identity').focus(); return false; }
if(document.getElementById('Tel').value=='') { alert('必须输入联系电话！'); document.getElementById('Tel').focus(); return false; }
if(document.getElementById('Address').value=='') { alert('必须输入联系地址！'); document.getElementById('Address').focus(); return false; }
if(document.getElementById('WebID').value=='') { alert('必须设置员工账号！'); document.getElementById('WebID').focus(); return false; }
if(document.getElementById('PassWord').value=='') { alert('密码不能为空！'); document.getElementById('PassWord').focus(); return false; }
if(document.getElementById('PassWord').value!=document.getElementById('RPass').value) { alert('两次输入的密码不一致！'); document.getElementById('PassWord').focus(); return false; } } </script>
<script language="JavaScript"> function Check() { if(document.getElementById('TrueName').value=='') { alert('必须输入姓名！'); document.getElementById('TrueName').focus(); return false; }
if(document.getElementById('Identity').value=='') { alert('必须输入身份证号码！'); document.getElementById('Identity').focus(); return false; }
if(document.getElementById('Tel').value=='') { alert('必须输入联系电话！'); document.getElementById('Tel').focus(); return false; }
if(document.getElementById('Address').value=='') { alert('必须输入联系地址！'); document.getElementById('Address').focus(); return false; }
if(document.getElementById('WebID').value=='') { alert('必须设置员工账号！'); document.getElementById('WebID').focus(); return false; }
if(document.getElementById('PassWord').value=='') { alert('密码不能为空！'); document.getElementById('PassWord').focus(); return false; }
if(document.getElementById('PassWord').value!=document.getElementById('RPass').value) { alert('两次输入的密码不一致！'); document.getElementById('PassWord').focus(); return false; } } </script>
邮箱验证
<script type="text/javascript"> //验证邮箱格式 function isEmail() { var email=document.getElementById("zh_e").value; if(email=="") { alert("请输入邮箱！"); document.getElementById("zh_e").focus(); return false; } var pattern= /^([a-zA-Z0-9] [_|\_|\.]?)*[a-zA-Z0-9] @([a-zA-Z0-9] [_|\_|\.]?)*[a-zA-Z0-9] \.[a-zA-Z]{2,3}$/; strEmail=pattern.test(email); if (strEmail) { return true; } else { alert("邮箱格式不正确！"); } } </script> 实现功能：当鼠标焦点离开文本框时触发该事件。οnblur=“ isEmail” [ onblur()失去焦点时触发事件 ] <body> <input type="text" maxlength="32" style="width:220px;" οnblur="isEmail()" id="zh_e"/> </body> 更多专业前端知识，请上 【猿2048】www.mk2048.com