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function cls(){
var sum=0;
var t = document.getElementsByTagName("INPUT");
for (var i=0; i <t.length;i++){
if (t[i].type=='text'){
++sum;
t[i].value="";//清空
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var t1 = document.getElementsByTagName("textarea");
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alert('頁面共有TEXT:'+sum + ' 個/n' + '頁面共有TextArea:' + sum1 +'個');
}
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