<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>每天一个JavaScript实例-防止反复表单提交</title>
<style>
#refresh{
display: none;
width:200px;
height:20px;
background-color: #ff0; } </style> <script>
var inprocess = false;
window.onload = function(){ document.forms["picker"].onsubmit = validateSubmit;
document.getElementById("refresh").onclick = startOver;
}
function validateSubmit () {
// 防止反复的表单提交
if (inprocess) return;
inprocess = true;
console.log(inprocess);
document.getElementById("submitbutton").disabled = true; document.getElementById("refresh").style.display = "block";
document.getElementById("message").innerHTML = "<p>正在processing。稍等</p>";
return false;
}
function startOver(){
inprocess = false;
document.getElementById("submitbutton").disabled = false;
document.getElementById("message").innerHTML = "";
document.getElementById("refresh").style.display = "none"; }
</script>
</head> <body> <form id="picker" method="post" action="">
group1:<input type="radio" name="group1" value="one" />
group2:<input type="radio" name="group1" value="two" />
group3:<input type="radio" name="group1" value="three" /><br /><br />
Input 1: <input type="text" id="intext" />
Input 2: <input type="text" id="intext2" />
Input 3: <input type="text" id="intext3" />
<input type="submit" id="submitbutton" value="send form" />
</form>
<div id="refresh">
<p>单击我</p>
</div>
<div id="message"></div>
</body>
</html>