本文實例講述了javascript實現點擊商品列表checkbox實時統計金額的方法。分享給大家供大家參考。具體實現方法如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>商品列表統計金額</title>
<style type="text/css">
body,div,p
{
margin:0;
padding:0;
font-size:14px;
}
#sumMoney
{
font-size:26px;
font-weight:bold;
color:Red;
}
</style>
<script type="text/javascript">
//全選和全清
function checkAll() {
var chkItems = document.getElementsByName("item");
for (var i = 0; i < chkItems.length; i++) {
chkItems[i].checked = event.srcElement.checked;
}
calculateMoney();
}
//統計所有選中的產品金額
function calculateMoney() {
var sum = 0;
var chkItems = document.getElementsByName("item");
for (var i = 0; i < chkItems.length; i++) {
if (chkItems[i].checked) {
sum += parseInt(chkItems[i].value);
}
}
var sumMoneyObj = document.getElementById("sumMoney");
sumMoneyObj.innerHTML = "總金額:" + sum;
}
//給每個產品復選框加上自動統計功能
function iniEvent() {
var chkItems = document.getElementsByName("item");
for (var i = 0; i < chkItems.length; i++) {
chkItems[i].onclick = calculateMoney;
}
}
</script>
</head>
<body onload="iniEvent()">
<div id="divMain">
<p><input type="checkbox" name="全選" onclick="checkAll()" />全選</p>
<p><input type="checkbox" name="item" value="2999" />¥2999 Haier/海爾 KFR-35GW/03GJC12-DS</p>
<p><input type="checkbox" name="item" value="2256" />¥2256 天貓年貨 AUX/奧克斯 KFR-35GW/SFA+2</p>
<p><input type="checkbox" name="item" value="2799" />¥2799 Gree/格力 KFR-26G(26556)FNDe-3</p>
<p><input type="checkbox" name="item" value="2008" />¥2008 AUX/奧克斯 KFR-25GW/SFA+2</p>
<p><input type="checkbox" name="item" value="2598" />¥2598 Hisense/海信 KFR-35GW/EF11S3</p>
<p><input type="checkbox" name="item" value="1877" />¥1877 TCL KFRd-25GW/DE22</p>
<p><input type="checkbox" name="item" value="2398" />¥2398 Kelon/科龍 KFR-35GW/EFVCS3</p>
<p><input type="checkbox" name="item" value="1999" />¥1999 TCL KFRd-35GW/FC23</p>
<p><input type="checkbox" name="全選" onclick="checkAll()" />全選</p>
<p><span id="sumMoney">總金額:</span></p>
</div>
</body>
</html>
希望本文所述對大家的javascript程序設計有所幫助。