常用Form表单验证
//验证数字function isNumber(obj){if(!obj){ return false;}var val=obj.value;if(val==""){ obj.value=""; obj.focus(); return false;}if(Math.round(val)!=val){ obj.value=""; obj.focus(); return false;}}//验证邮箱地址function isEmail(obj){if(!obj){return false;}var email=obj.value;if(email==""){alert("邮箱地址不可以为空");obj.value="";obj.focus();return false;}var pattern =/^[a-zA-Z0-9_\-]{1,}@[a-zA-Z0-9_\-]{1,}\.[a-zA-Z0-9_\-.]{1,}$/;if(!pattern.exec(email)){ alert('邮箱格式不正确'); obj.value=""; obj.focus(); return false;}}//验证电话号码和传真function isTelephone(obj){if(!obj){ return false;}var tel_val=obj.value; var pattern =/^(([0\+]\d{2,3}-)?(0\d{2,3})-)(\d{7,8})(-(\d{3,}))?$/; //var pattern =/(^[0-9]{3,4}\-[0-9]{7,8}$)|(^[0-9]{7,8}$)|(^\([0-9]{3,4}\)[0-9]{3,8}$)|(^0{0,1}13[0-9]{9}$)/; if(tel_val!="") { if(!pattern.exec(s)) { alert('请输入正确的电话号码:电话号码格式为国家代码(2到3位)-区号(2到3位)-电话号码(7到8位)-分机号(3位)"'); obj.value=""; obj.focus(); return false; } }}//验证手机号码：必须以数字开头，除数字外，可含有“-”function isMobile(obj){if(!obj){return false;} var mVal=obj.value; var reg0 = /^13\d{5,9}$/; var reg1 = /^153\d{4,8}$/; var reg2 = /^159\d{4,8}$/; var reg3 = /^0\d{10,11}$/; var my = false; if (reg0.test(mVal)){ my=true; } if (reg1.test(mVal)){ my=true; } if (reg2.test(mVal)){ my=true; } if (reg3.test(mVal)){ my=true; } if(mVal!="") { if (!my) { alert('请输入正确的手机号码'); obj.value=""; obj.focus(); return false; } }}//校验(国内)邮政编码function isPostalCode(obj){if(!obj){return false;} var pVal =obj.value; var pattern =/^[0-9]{6}$/; if(pVal!="") { if(!pattern.exec(pVal)) { alert('请输入正确的邮政编码'); obj.value=""; obj.focus(); return false; } }}?