<script type =
"text/javascript"
language =
"javascript"
>
function
clear1() {
if
(confirm(
"确定要清空数据吗?"
)) {
document.main.text1.value =
""
; }
}
</script>
<body>
<form name=
"main"
>
<input type=
"text"
name=
"text1"
/>
<input type=
"button"
name=
"Submit"
value=
"清空数据"
onClick=
"return clear1();"
>
</form>
</body>