用js
<script language="JavaScript">
function qq(){
//提交操作
var btn = document.getElementById("btn")
btn.disabled=true
c(4)
}
function c(i){
var btn = document.getElementById("btn")
i--;
if(i==0){
btn.value = "确定"
btn.disabled=false
}
else{
btn.value = "确定("+i+")"
setTimeout("c("+i+")",1000)
}
}
</script>
<input type="button" onclick="qq()" id="btn" value="确定">
