<
script?language
=
javascript
>
function
?isChineseChar(strInput){
????
var
?len?
=
?strInput.length;
????
if
(
0
?
==
?len)
????????
return
?
false
;
????
for
(
var
?i
=
0
;i
<
len;i
++
){
????????
if
?(strInput.charCodeAt(i)
<=
255
)
????????
return
?
false
;
????}
????
return
?
true
;
}
alert(isChineseChar(
"
skdj
"
));
alert(isChineseChar(
"
點(diǎn)算法
"
));
alert(isChineseChar(
"
點(diǎn)算法sdf
"
));
</
script
>
正則表達(dá)式
<input?type="text"?onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')"?onbeforepaste="clipboardData.setData('text',?clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))"?>??????