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惯用js代码大全4

热度：450   发布时间：2012-09-20 09:36:50.0
常用js代码大全4
JS代码判断集锦(之一)?

<script. language="JavaScript">?
function checkid(iden,year,month,day){?

if (iden.value.length==15) {?


if ((iden.value.lastIndexOf(month.value+day.value))==8) {?

return true;?
}?
return false;?
}?
if (iden.value.length==18) {?


if ((iden.value.indexOf(year.value+month.value+day.value))==6) {?

return true;?
}?
return false;?
}?

return false;?
}?


function isCharsInBag (s, bag)?
{?
var i;?
for (i = 0; i < s.length; i++)?
{?
var c = s.charAt(i);?
if (bag.indexOf(c) == -1) return false;?
}?
return true;?
}?
function isEmpty(s)?
{?
return ((s == null) || (s.length == 0))?
}?

function isWhitespace (s)?
{?
var whitespace = " \t\n\r";?
var i;?
for (i = 0; i < s.length; i++)?
{?
var c = s.charAt(i);?
if (whitespace.indexOf(c) >= 0)?
{?
return true;?
}?
}?
return false;?
}?
function isEmail (s,t)?
{?
if (isEmpty(s))?
{?
window.alert("输入的E-mail地址不能为空，请输入！");?
mobj = eval(t);?
mobj.focus();?
mobj.select();?
return false?
}?
if (isWhitespace(s))?
{?
window.alert("输入的E-mail地址中不能包含空格符，请重新输入！");?
mobj = eval(t)?
mobj.focus()?
mobj.select()?
return false;?
}?
var i = 1;?
var len = s.length;?

if (len > 50)?
{?
window.alert("email地址长度不能超过50位!");?
mobj = eval(t)?
mobj.focus()?
mobj.select()?
return false;?
}?

pos1 = s.indexOf("@");?
pos2 = s.indexOf(".");?
pos3 = s.lastIndexOf("@");?
pos4 = s.lastIndexOf(".");?
if ((pos1 <= 0)||(pos1 == len)||(pos2 <= 0)||(pos2 == len))?
{?
window.alert("请输入有效的E-mail地址！");?
mobj = eval(t)?
mobj.focus()?
mobj.select()?
return false;?
}?
else?
{?
if( (pos1 == pos2 - 1) || (pos1 == pos2 + 1)?
|| ( pos1 != pos3 )?
|| ( pos4 < pos3 ) )?
{?
window.alert("请输入有效的E-mail地址！");?
mobj = eval(t)?
mobj.focus()?
mobj.select()?
return false;?
}?
}?

if ( !isCharsInBag( s, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_@"))?
{?
window.alert("email地址中只能包含字符ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_@\n" + "请重新输入" );?
mobj = eval(t)?
mobj.focus()?
return false;?
}?
return true;?
}?
function isnumber(str){?
var digits="1234567890";?
var i=0;?
var strlen=str.length;?
while((i<strlen)){?
var char=str.charAt(i);?
if(digits.indexOf(char)==-1)return false;i++;?
}?
return true;?
}?
function isnumbercode(str){?
var digits="1234567890-/";?
var i=0;?
var strlen=str.length;?
while((i<strlen)){?
var char=str.charAt(i);?
if(digits.indexOf(char)==-1)return false;i++;?
}?
return true;?
}?
</script>?

<script. language=javascript>?
function checkForm(theform){?
if (document.frm.companyname.value.length==0){?
alert("单位名称不能为空。");?
mobj = eval("document.frm.companyname");?
mobj.focus()?
mobj.select()?
return false;?
}?

if (document.frm.address.value.length==0){?
alert("单位地址不能为空");?
mobj = eval("document.frm.address");?
mobj.focus()?
mobj.select()?
return false;?
}?

if (document.frm.invest.value.length==0){?
alert("投资额不能为空");?
mobj = eval("document.frm.invest");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.codeornumber.value.length==0){?
alert("法人代码证书号或营业执照编号不能为空");?
mobj = eval("document.frm.codeornumber");?
mobj.focus()?
mobj.select()?
return false;?
}?

if (document.frm.linkman.value.length==0){?
alert("联系人不能为空");?
mobj = eval("document.frm.linkman");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.linkmanjob.value.length==0){?
alert("联系人职位不能为空");?
mobj = eval("document.frm.linkmanjob");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.phone.value.length==0){?
alert("电话不能为空");?
mobj = eval("document.frm.phone");?
mobj.focus()?
mobj.select()?
return false;?
}?

if (document.frm.email.value=='') {?
window.alert ("请输入您的E-mail地址 ！")?
mobj = eval("document.frm.email");?
mobj.focus()?
mobj.select()?
return false?
}?
if ( !isEmail(document.frm.email.value,document.frm.email) )?
return false?
if (document.frm.introduction.value.length==0){?
alert("公司简介不能为空");?
mobj = eval("document.frm.introduction");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.positionname.value.length==0){?
alert("职位名称不能为空");?
mobj = eval("document.frm.positionname");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.jobaddress.value.length==0){?
alert("工作地点不能为空");?
mobj = eval("document.frm.jobaddress");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.jobfunction.value.length==0){?
alert("工作职责不能为空");?
mobj = eval("document.frm.jobfunction");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.positionrequre.value.length==0){?
alert("职位要求不能为空");?
mobj = eval("document.frm.positionrequre");?
mobj.focus()?
mobj.select()?
return false;?
}?
if (document.frm.salary.value.length==0){?
alert("待遇不能为空");?
mobj = eval("document.frm.salary");?
mobj.focus()?
mobj.select()?
return false;?
}?
}?
</script>
?

JS代码判断集锦（之二）

<INPUT TYPE="button" value="登录"??tabindex="4">?

<INPUT TYPE="button" value="注册"??tabindex="4">?

function trim(inputstr) //去处空格,在获取客户端录入的表单信息前，?
都先trim一下再提交 例如:“form1.org_name.value = trim(form1.org_name.value);”?
{?
if(!inputstr.length>0) return "";?
var starts=0;?
var ends=inputstr.length;?
while(starts<ends)?
{?
if(inputstr.substring(starts,starts+1)==" ")?
starts++;?
else?
break;?
}?
while(starts<ends)?
{?
if(inputstr.substring(ends-1,ends)==" ")?
ends--;?
else?
break;?
}?
return inputstr.substring(starts,ends);?
}?

function isvalidcode(inputs) //校验邮政编码?
{?
var i,temp;?
var isvalidcode = true;?
inputstr=trim(inputs);?
if(inputstr.length==null||inputstr.length==0||inputstr.length!=6) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!(temp>="0" && temp<="9"))?
{?
isvalidcode=false;?
break;?
}?
}?
return isvalidcode;?
}?

function isvalidtel(inputs) //校验电话号码?
{?
var i,temp;?
var isvalidtel = true;?
inputstr=trim(inputs);?
if(inputstr.length==null||inputstr.length==0) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!(temp>="0" && temp<="9" || temp=="-"))?
{?
isvalidtel=false;?
break;?
}?
}?
return isvalidtel;?
}?

function isrealnum(inputs) //校验实数（含小数点）?
{?
var i,temp;?
var isrealnum = true;?
inputstr=trim(inputs);?
if(inputstr.length==null||inputstr.length==0) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!(temp>="0" && temp<="9" || temp=="."))?
{?
isrealnum=false;?
break;?
}?
}?
return isrealnum;?
}?

function isnumeric(inputs) //校验是否整数?
{?
var i,temp;?
var isnumeric = true;?
inputstr=trim(inputs);?
if(inputstr.length==null||inputstr.length==0) return false;?
//isvalid = true;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!(temp>="0" && temp<="9"))?
{?
isnumeric=false;?
break;?
}?
}?
return isnumeric;?
}?

function isvalidide(inputs) //校验身份证?
{?
var i,temp;?
var isvalidide = true;?
inputstr=trim(inputs);?
if(inputstr.length == null || inputstr.length == 0 || (inputstr.length != 15 && inputstr.length != 18)) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!((temp>="0" && temp<="9") || temp == "x" || temp == "X"))?
{?
isvalidide=false;?
break;?
}?
}?
return isvalidide;?
}?

function isvalidname(inputs) //校验账号2~15位（即只能是英文字母和数字组成的串）?
{?
var i,temp;?
var isvalidname = true;?
inputstr=trim(inputs);?
if(inputstr.length==null || inputstr.length==0 || inputstr.length > 15 || inputstr.length < 2) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!((temp >= "0" && temp <= "9") || (temp >= "a" && temp <= "z") || (temp >= "A" && temp <= "Z")))?
{?
isvalidname=false;?
break;?
}?
}?
return isvalidname;?
}?

function isvalidphoto(inputs) //校验照片扩展名?
{?
var i,temp;?
var isvalidphoto = true;?
inputstr=trim(inputs);?
if(inputstr.length==null || inputstr.length==0) return true; //没有相片也允许的?
temp=inputstr.substring(inputstr.lastIndexOf(".")+1);?

temp = temp.toLowerCase();?
if(!(temp == "bmp" || temp == "jpg" || temp == "gif"))?
{?
isvalidphoto=false;?
}?
return isvalidphoto;?
}?

function isvalidzgh(inputs) //校验职工号8位（即只能是英文字母和数字组成的串）?
{?
var i,temp;?
var isvalidzgh = true;?
inputstr=trim(inputs);?
if(inputstr.length==null || inputstr.length==0 || inputstr.length != 8) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!((temp >= "0" && temp <= "9") || (temp >= "a" && temp <= "z") || (temp >= "A" && temp <= "Z")))?
{?
isvalidzgh=false;?
break;?
}?
}?
return isvalidzgh;?
}?

function isvalidxh(inputs) //校验学号7位（即只能是英文字母和数字组成的串）?
{?
var i,temp;?
var isvalidxh = true;?
inputstr=trim(inputs);?
if(inputstr.length==null || inputstr.length==0 || inputstr.length != 7) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!((temp >= "0" && temp <= "9") || (temp >= "a" && temp <= "z") || (temp >= "A" && temp <= "Z")))?
{?
isvalidxh=false;?
break;?
}?
}?
return isvalidxh;?
}?

function isvalidkcid(inputs) //校验课程编号5位（即只能是数字组成的串）?
{?
var i,temp;?
var isvalidkcid = true;?
inputstr=trim(inputs);?
if(inputstr.length==null||inputstr.length==0||inputstr.length!=5) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!(temp>="0" && temp<="9"))?
{?
isvalidkcid=false;?
break;?
}?
}?
return isvalidkcid;?
}?

function isvalidnamee(inputs) //校验账号4~20位（即只能是英文字母和数字组成的串）?
{?
var i,temp;?
var isvalidname = true;?
inputstr=trim(inputs);?
if(inputstr.length==null || inputstr.length==0 || inputstr.length > 20 || inputstr.length < 4) return false;?
for(i=0;i<inputstr.length;i++)?
{?
temp=inputstr.substring(i,i+1);?

if(!((temp >= "0" && temp <= "9") || (temp >= "a" && temp <= "z") || (temp >= "A" && temp <= "Z")))?
{?
isvalidname=false;?
break;?
}?
}?
return isvalidname;?
}?


<Script. language="JavaScript">?
function login()?
{?
form1.UNAME.value = trim(form1.UNAME.value);?
form1.PWD.value = trim(form1.PWD.value);?
form1.PWD2.value = trim(form1.PWD2.value);?
form1.EMAIL.value = trim(form1.EMAIL.value);?
form1.NC.value = trim(form1.NC.value);?
if(!isvalidname(form1.UNAME.value))?
{?
alert("请您注意:用户名必须为『2~15位英文或数字』!");?
form1.UNAME.focus();?
return false;?
}?
else if(!isvalidname(form1.PWD.value))?
{?
alert("请您注意:密码必须为『2~15位英文或数字』!");?
form1.PWD.focus();?
return false;?
}?
else if(!isvalidname(form1.PWD2.value))?
{?
alert("请您注意:密码确认也必须为『2~15位英文或数字』!");?
form1.PWD2.focus();?
return false;?
}?
else if(form1.PWD.value != form1.PWD2.value)?
{?
alert("两次密码不一致!");?
form1.PWD.focus();?
return false;?
}?
else if(form1.EMAIL.value == "" || form1.EMAIL.value.length > 100)?
{?
alert("请输入邮件!");?
form1.EMAIL.focus();?
return false;?
}?
else if(form1.NC.value == "" || form1.NC.value.length > 15)?
{?
alert("请输入昵称!");?
form1.NC.focus();?
return false;?
}?
else if(window.confirm("您确信提交!"))?
return true;?
else?
return false;?
}?

function regedit()?
{?
var litop = (screen.height - 162)/2;?
var lileft = (screen.width - 360)/2;?
window.open("/regedit.aspx", "reg", "titlebar=no,fullscreen=no,dependent=yes,height=162,width=360,?
top=" + litop + ",left=" + lileft + ",?
toolbar=no,menubar=no,scrollbars=no,resizable=no,?
channelmode=no,status=no,location=no,directories=no");?
}?
</Script>
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