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xufan6/gist:1867900

Created February 20, 2012 04:46
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全角转半角的js
Raw
gistfile1.js
<html>
<textarea name="n" type="text" id="n" onkeyup="CtoH(this);" style="width:100%;height:100%;"></textarea>
<SCRIPT>
function CtoH(obj){
var str=obj.value;
var result="";
for (var i = 0; i < str.length; i++){
if (str.charCodeAt(i)==12288){
result+= String.fromCharCode(str.charCodeAt(i)-12256);
continue;
}
if (str.charCodeAt(i)!=65292 && str.charCodeAt(i)>65280 && str.charCodeAt(i)<65375) result+= String.fromCharCode(str.charCodeAt(i)-65248);
else result+= String.fromCharCode(str.charCodeAt(i));
}
obj.value=result;
}
</SCRIPT>
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