动态javaScript验证

//判断用户的输入是否合法 function check(){ if (myform.username.value==""){ alert("请输入用户名！");myform.username.focus();return; } if (myform.truename.value==""){ alert("请输入真实姓名！");myform.truename.focus();return; } if (myform.pwd.value==""){ alert("请输入密码！");myform.pwd.focus();return; } if (myform.pwd.value.length<1){ alert("密码至少为6位，请重新输入！");myform.pwd.focus();return; } if (myform.pwd1.value==""){ alert("请确认密码！");myform.pwd1.focus();return; } if (myform.pwd.value!=myform.pwd1.value){ alert("您两次输入的密码不一致，请重新输入！");myform.pwd.focus();return; } if(myform.cardno.value==""){ alert("请证件号码！");myform.cardno.focus();return; } if (myform.email.value==""){ alert("请输入Email地址！");myform.email.focus();return; } var i=myform.email.value.indexOf("@"); var j=myform.email.value.indexOf("."); if((i<0)||(i-j>0)||(j<0)){ alert("您输入的Email地址不正确，请重新输入！");myform.email.value="";myform.email.focus();return; } myform.submit(); } function check_modi(){ if (myform.truename.value==""){ alert("请输入真实姓名！");myform.truename.focus();return; } if (myform.oldpwd.value==""){ alert("请输入原密码！");myform.oldpwd.focus();return; } if(myform.holdpwd.value!=myform.oldpwd.value){ alert("您输入的原密码不正确，请重新输入！");myform.oldpwd.value="";myform.oldpwd.focus();return; } if (myform.pwd.value==""){ alert("请输入新密码！");myform.pwd.focus();return; } if (myform.pwd.value.length<1){ alert("新密码至少为6位，请重新输入！");myform.pwd.focus();return; } if (myform.pwd1.value==""){ alert("请确认新密码！");myform.pwd1.focus();return; } if (myform.pwd.value!=myform.pwd1.value){ alert("您两次输入的密码不一致，请重新输入！");myform.pwd.focus();return; } if(myform.cardno.value==""){ alert("请证件号码！");myform.cardno.focus();return; } if (myform.email.value==""){ alert("请输入Email地址！");myform.email.focus();return; } var i=myform.email.value.indexOf("@"); var j=myform.email.value.indexOf("."); if((i<0)||(i-j>0)||(j<0)){ alert("您输入的Email地址不正确，请重新输入！");myform.email.value="";myform.email.focus();return; } myform.submit(); } function checkU(myform){ if(myform.username.value==""){ alert("请输入用户名!");myform.username.focus();return; } if(myform.PWD.value==""){ alert("请输入密码!");myform.PWD.focus();return; } myform.submit(); } function checkM(myform){ if(myform.manager.value==""){ alert("请输入管理员名!");myform.manager.focus();return; } if(myform.PWD.value==""){ alert("请输入密码!");myform.PWD.focus();return; } myform.submit(); } function CheckAll(elementsA,elementsB){ for(i=0;i<elementsA.length;i++){ elementsA[i].checked = true; } if(elementsB.checked ==false){ for(j=0;j<elementsA.length;j++){ elementsA[j].checked = false; } } } //判断用户是否选择了要删除的记录，如果是，则提示“是否删除”；否则提示“请选择要删除的记录” function checkdel(delid,formname){ var flag = false; for(i=0;i<delid.length;i++){ if(delid[i].checked){ flag = true; break; } } if(!flag){ alert("请选择要删除的记录！"); return false; }else{ if(confirm("确定要删除吗？")){ formname.submit(); } } } function ValidateDate(strValue) { var objRegExp = /^(\d{2})\/(\d{2})\/(\d{4})$/; if(!objRegExp.test(strValue)) return false; else { var arrayDate = strValue.split('/'); var intDay = parseInt(arrayDate[0],10); var intYear = parseInt(arrayDate[2],10); var intMonth = parseInt(arrayDate[1],10); if(intMonth > 12 || intMonth < 1) return false; var arrayLookup = { '1' : 31,'3' : 31, '4' : 30,'5' : 31,'6' : 30,'7' : 31, '8' : 31,'9' : 30,'10' : 31,'11' : 30,'12' : 31}; if(arrayLookup[intMonth] != null) { if(intDay > arrayLookup[intMonth] || intDay == 0) return false; } if (intMonth==2) { var booLeapYear = (intYear % 4 == 0 && (intYear % 100 != 0 || intYear % 400 == 0)); if( ((booLeapYear && intDay > 29) || (!booLeapYear && intDay >28)) || intDay ==0) return false; } var currentDate = new Date(); var cYear = currentDate.getFullYear(); var cMonth = currentDate.getMonth()+1; var cDay = currentDate.getDate(); if(cYear*10000+cMonth*100+cDay > intYear*10000+intMonth*100+intDay) return false; } return true; }