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7:js×Ö·û¹ýÂË,ÆÁ±Î¹Ø¼ü×Ö
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1. ³¤¶ÈÏÞÖÆ
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function test()
{
if(document.a.b.value.length>50)
{
alert("²»Äܳ¬¹ý50¸ö×Ö·û£¡");
document.a.b.focus();
return false;
}
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</script>
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<input type="submit" value="check">
</form>
2. Ö»ÄÜÊǺº×Ö
<input /oblog/value.replace(/[^\u4E00-\u9FA5]/g,'')">
3." Ö»ÄÜÊÇÓ¢ÎÄ
<script language=javascript>
function onlyEng()
{
if(!(event.keyCode>=65&&event.keyCode<=90))
event.returnvalue=false;
}
</script>
<input >
4. Ö»ÄÜÊÇÊý×Ö
<script language=javascript>
function onlyNum()
{
if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))
//¿¼ÂÇС¼üÅÌÉϵÄÊý×Ö¼ü
event.returnvalue=false;
}
</script>
<input >
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6. ÑéÖ¤ÓÍÏä¸ñʽ
<SCRIPT LANGUAGE=javascript RUNAT=Server>
function isEmail(strEmail) {
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return true;
else
alert("oh");
}
</SCRIPT>
<input type=text
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