<script>
function go() {
document.getElementById("ttt").outerHTML+="";
}
</script>
<input type=file name=ttt id="ttt">
<input type=button οnclick="go()" value=清除file框的内容>
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<script>
function go() {
document.getElementById("ttt").outerHTML+="";
}
</script>
<input type=file name=ttt id="ttt">
<input type=button οnclick="go()" value=清除file框的内容>
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