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{
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{
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document.a.b.focus();
return false;
}
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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>
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function onlyNum()
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if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105)))
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function isEmail(strEmail) {
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return true;
else
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