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<HTML><HEAD>
<TITLE> New Document </TITLE>
</HEAD>
<script type="">
function autoSize(A){
A.size = 40;
}
function autoBack(A){
A.size = 20;
}
</script>
<BODY>
<table border="1"><tr>
<td>
<input type="text" value="我饿就是快乐的房间哦撒就是哦减肥撒哦接哦"
onmouseover="autoSize(this);" onmouseout="autoBack(this);" size="20">
</td><td>
<input type="text" value="我饿就是快乐的房间哦撒就是哦减肥撒哦接哦"
onmouseover="autoSize(this);" onmouseout="autoBack(this);" size="20">
</td>
</tr></table>
</BODY>
</HTML>
试试
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
</HEAD>
<script type="">
function autoSize(A){
var size=0;
for(var i=0;i<A.value.length;i++){
if((A.value.charCodeAt(i)>=0)&&(A.value.charCodeAt(i)<=255))
size+=1;
else
size+=2;
}
A.size=size;
}
function autoBack(A){
A.size = 20;
}
</script>
<BODY>
<table border="1"><tr>
<td>
<input type="text" value="我饿就是快乐的房间哦撒就是哦减肥撒哦接哦"
onmouseover="autoSize(this);" onmouseout="autoBack(this);" size="20">
</td><td>
<input type="text" value="我饿就是快乐的房间哦撒就是哦减肥撒哦接哦"
onmouseover="autoSize(this);" onmouseout="autoBack(this);" size="20">
</td>
</tr></table>
</BODY>
</HTML>