<script language="JavaScript">
function checkid(iden,year,month,day){
(iden.value.length15) {

((iden.value.lastIndexOf(month.value+day.value))8) {
true;
}
false;
}
(iden.value.length18) {

((iden.value.indexOf(year.value+month.value+day.value))6) {
true;
}
false;
}
false;
}

function isCharsInBag (s, bag)
{
var i;
for (i = 0; i < s.length; i)
{
var c = s.charAt(i);
(bag.indexOf(c) -1) false;
}
true;
}
function isEmpty(s)
{
((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);
(whitespace.indexOf(c) >= 0)
{
true;
}
}
false;
}
function isEmail (s,t)
{
(isEmpty(s))
{
window.alert("输入E-mail地址不能为空请输入！");
mobj = eval(t);
mobj.focus;
mobj.select;
false
}
(isWhitespace(s))
{
window.alert("输入E-mail地址中不能包含空格符请重新输入！");
mobj = eval(t)
mobj.focus
mobj.select
false;
}
var i = 1;
var len = s.length;
(len > 50)
{
window.alert("email地址长度不能超过50位!");
mobj = eval(t)
mobj.focus
mobj.select
false;
}
pos1 = s.indexOf("@");
pos2 = s.indexOf(".");
pos3 = s.lastIndexOf("@");
pos4 = s.lastIndexOf(".");
((pos1 <= 0)||(pos1 len)||(pos2 <= 0)||(pos2 len))
{
window.alert("请输入有效E-mail地址！");
mobj = eval(t)
mobj.focus
mobj.select
false;
}

{
( (pos1 pos2 - 1) || (pos1 pos2 + 1)
|| ( pos1 != pos3 )
|| ( pos4 < pos3 ) )
{
window.alert("请输入有效E-mail地址！");
mobj = eval(t)
mobj.focus
mobj.select
false;
}
}
( !isCharsInBag( s, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_@"))
{
window.alert("email地址中只能包含ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_@\n" + "请重新输入" );
mobj = eval(t)
mobj.focus
false;
}
true;
}
function isnumber(str){
var digits="1234567890";
var i=0;
var strlen=str.length;
while((i<strlen)){
var char=str.charAt(i);
(digits.indexOf(char)-1) false;i;
}
true;
}
function isnumbercode(str){
var digits="1234567890-/";
var i=0;
var strlen=str.length;
while((i<strlen)){
var char=str.charAt(i);
(digits.indexOf(char)-1) false;i;
}
true;
}
</script>
<script language=javascript>
function checkForm(theform){
(document.frm.companyname.value.length0){
alert("单位名称不能为空");
mobj = eval("document.frm.companyname");
mobj.focus
mobj.select
false;
}
(document.frm.address.value.length0){
alert("单位地址不能为空");
mobj = eval("document.frm.address");
mobj.focus
mobj.select
false;
}
(document.frm.invest.value.length0){
alert("投资额不能为空");
mobj = eval("document.frm.invest");
mobj.focus
mobj.select
false;
}
(document.frm.codeornumber.value.length0){
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
false;
}
(document.frm.linkman.value.length0){
alert("联系人不能为空");
mobj = eval("document.frm.linkman");
mobj.focus
mobj.select
false;
}
(document.frm.linkmanjob.value.length0){
alert("联系人职位不能为空");
mobj = eval("document.frm.linkmanjob");
mobj.focus
mobj.select
false;
}
(document.frm.phone.value.length0){
alert("电话不能为空");
mobj = eval("document.frm.phone");
mobj.focus
mobj.select
false;
}
(document.frm.email.value'') {
window.alert ("请输入您E-mail地址 ！")
mobj = eval("document.frm.email");
mobj.focus
mobj.select
false
}
( !isEmail(document.frm.email.value,document.frm.email) )
false
(document.frm.roduction.value.length0){
alert("公司介绍不能为空");
mobj = eval("document.frm.roduction");
mobj.focus
mobj.select
false;
}
(document.frm.positionname.value.length0){
alert("职位名称不能为空");
mobj = eval("document.frm.positionname");
mobj.focus
mobj.select
false;
}
(document.frm.jobaddress.value.length0){
alert("工作地点不能为空");
mobj = eval("document.frm.jobaddress");
mobj.focus
mobj.select
false;
}
(document.frm.jobfunction.value.length0){
alert("工作职责不能为空");
mobj = eval("document.frm.jobfunction");
mobj.focus
mobj.select
false;
}
(document.frm.positionrequre.value.length0){
alert("职位要求不能为空");
mobj = eval("document.frm.positionrequre");
mobj.focus
mobj.select
false;
}
(document.frm.salary.value.length0){
alert("待遇不能为空");
mobj = eval("document.frm.salary");
mobj.focus
mobj.select
false;
}
}
</script>
JS代码判断集锦(的 2)