<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>QQ登录</title>
<!--<link rel="stylesheet" href="css/a.css" type="text/css" />-->
<script type="text/javascript">
function myget() { //获取总金额
var inputs = document.getElementsByTagName("input");
var sum = 0;
for(var i = 0; i < inputs.length; ++i) {
if(inputs[i].value == "quan") {
break;
}
if(inputs[i].checked) {
sum += 3000;
}
}
var sp = document.getElementById("sp");
sp.innerHTML = sum + "元";
}
function out() {
var sp = document.getElementById("sp");
sp.innerHTML = "";
}
function change(a) {
var inputs = document.getElementsByTagName("input");
if(a == true) {
//alert("hah ");
for(var i = 0; i < inputs.length; ++i) {
if(inputs[i].value == "quan")
break;
else {
inputs[i].checked = true;
}
}
}
else for(var i=0;i<inputs.length;++i)
inputs[i].checked=false;
}
</script>
</head>
<body>
<form>
<p>商品列表</p>
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox">笔记本电脑3000元<br />
<input type="checkbox" value="quan" onclick="change(this.checked)">全选<br />
<input type="button" value="总金额：" onclick="myget()" onmouseout="out()" />
<span id="sp"></span>
</form>
</body>
</html>
