<script language="javascript">
<!--
function form1_onsubmit()
{
var urlreg=/^[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/
var url=document.form1.url.value
if (!urlreg.test(url))
{
alert("網(wǎng)址錯(cuò)誤！")
document.form1.url.focus()
return false
}
}
-->
</script>
<form name="form1" method="post" action="" onsubmit="return form1_onsubmit()">
http://<input type="text" name="url" value="">
<input type="submit" name="submit" value="驗(yàn)證">
</form>

<script>
function test()
{
if(document.a.b.value.length>50)
{
alert("不能超過(guò)50個(gè)字符！");
document.a.b.focus();
return false;
}
}
</script>
<form name=a onsubmit="return test()">
<textarea name="b" cols="40" wrap="VIRTUAL" rows="6"></textarea>
<input type="submit" name="Submit" value="check">
</form>

<script language=javascript>
function onlyEng()
{
if(!(event.keyCode>=65&&event.keyCode<=90))
event.returnvalue=false;
}
</script>
<input onkeydown="onlyEng();">

<script language=javascript>
function onlyNum()
{
if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))
//考慮小鍵盤上的數(shù)字鍵
event.returnvalue=false;
}
</script>
<input onkeydown="onlyNum();">

<input onkeyup="value="/oblog/value.replace(/[\W]/g,"'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))">

<SCRIPT LANGUAGE=javascript RUNAT=Server>
function isEmail(strEmail) {
if (strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
return true;
else
alert("oh");
}
</SCRIPT>
<input type=text onblur=isEmail(this.value)>

<script language="javascript1.2">
function test() {
if((a.b.value.indexOf ("***") == 0)||(a.b.value.indexOf ("****") == 0)){
alert(":)");
a.b.focus();
return false;}
}
</script>
<form name=a onsubmit="return test()">
<input type=text name=b>
<input type="submit" name="Submit" value="check">
</form>

<FORM METHOD=POST ACTION="">
<input type="password" id="input1">
<input type="password" id="input2">
<input type="button" value="test" onclick="check()">
</FORM>
<script>
function check()
{
with(document.all){
if(input1.value!=input2.value)
{
alert("false")
input1.value = "";
input2.value = "";
}
else document.forms[0].submit();
}
}
</script>

<script language="javascript">
<!--
function CheckForm()
{
if (document.form.name.value.length == 0) {
alert("請(qǐng)輸入您姓名!");
document.form.name.focus();
return false;
}
return true;
}
-->
</script>

<script language="javascript">
<!--
function CheckForm()
if (document.form.PWD.value != document.form.PWD_Again.value) {
alert("您兩次輸入的密碼不一樣！請(qǐng)重新輸入.");
document.ADDUser.PWD.focus();
return false;
}
return true;
}
-->
</script>

<script language="javascript">
<!--
function isNumber(String)
{
var Letters = "1234567890-"; //可以自己增加可輸入值
var i;
var c;
if(String.charAt( 0 )=='-')
return false;
if( String.charAt( String.length - 1 ) == '-' )
return false;
for( i = 0; i < String.length; i ++ )
{
c = String.charAt( i );
if (Letters.indexOf( c ) < 0)
return false;
}
return true;
}
function CheckForm()
{
if(! isNumber(document.form.TEL.value)) {
alert("您的電話號(hào)碼不合法！");
document.form.TEL.focus();
return false;
}
return true;
}
-->
</script>

<script language="javascript">
<!--
function CheckForm()
{
if (document.form.count.value > 100 || document.form.count.value < 1)
{
alert("輸入數(shù)值不能小于零大于100!");
document.form.count.focus();
return false;
}
if (document.form.MESSAGE.value.length<10)
{
alert("輸入文字小于10!");
document.form.MESSAGE.focus();
return false;
}
return true;
}
//-->
</script>

<SCRIPT LANGUAGE="javascript">
<!--
function isEnglish(name) //英文值檢測(cè)
{
if(name.length == 0)
return false;
for(i = 0; i < name.length; i++) {
if(name.charCodeAt(i) > 128)
return false;
}
return true;
}
function isChinese(name) //中文值檢測(cè)
{
if(name.length == 0)
return false;
for(i = 0; i < name.length; i++) {
if(name.charCodeAt(i) > 128)
return true;
}
return false;
}
function isMail(name) // E-mail值檢測(cè)
{
if(! isEnglish(name))
return false;
i = name.indexOf(" at ");
j = name dot lastIndexOf(" at ");
if(i == -1)
return false;
if(i != j)
return false;
if(i == name dot length)
return false;
return true;
}
function isNumber(name) //數(shù)值檢測(cè)
{
if(name.length == 0)
return false;
for(i = 0; i < name.length; i++) {
if(name.charAt(i) < "0" || name.charAt(i) > "9")
return false;
}
return true;
}
function CheckForm()
{
if(! isMail(form.Email.value)) {
alert("您的電子郵件不合法！");
form.Email.focus();
return false;
}
if(! isEnglish(form.name.value)) {
alert("英文名不合法！");
form.name.focus();
return false;
}
if(! isChinese(form.cnname.value)) {
alert("中文名不合法！");
form.cnname.focus();
return false;
}
if(! isNumber(form.PublicZipCode.value)) {
alert("郵政編碼不合法！");
form.PublicZipCode.focus();
return false;
}
return true;
}
//-->
</SCRIPT>

<script language="javascript">
<!--
function contain(str,charset)// 字符串包含測(cè)試函數(shù)
{
var i;
for(i=0;i<charset.length;i++)
if(str.indexOf(charset.charAt(i))>=0)
return true;
return false;
}
function CheckForm()
{
if ((contain(document.form.NAME.value, "%\(\)><")) || (contain(document.form.MESSAGE.value, "%\(\)><")))
{
alert("輸入了非法字符");
document.form.NAME.focus();
return false;
}
return true;
}
//-->
</script>