我要评论本文实例为大家分享了商品价格计算的具体代码，利用ajax和php实现以下页面
index.php
<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<title>商品价格计算</title>
<style type="text/css">
table {
border-collapse: collapse;
}
tr {
text-align: center;
}
.a4 {
text-align: right;
/* padding-right: 15px; */
}
#mydiv {
color: red;
}
input {
border: 0;
}
</style>
</head>
<body>
<form action="data.php" method="get">
<table border="1" bordercolor="#00cccc" cellpadding="20">
<tr>
<th>商品名称</th>
<th>购买数量（斤）</th>
<th>商品价格（元/斤）</th>
</tr>
<tr>
<td>香蕉</td>
<td><input type="text" name="a1" value="0" id="n1" onchange="zongji()" /></td>
<td>8</td>
</tr>
<tr>
<td>苹果</td>
<td><input type="text" name="a2" value="0" id="n2" onchange="zongji()" /></td>
<td>5</td>
</tr>
<tr>
<td>橘子</td>
<td><input type="text" name="a3" value="0" id="n3" onchange="zongji()" /></td>
<td>7</td>
</tr>
<tr>
<td colspan="3" class="a4">商品折扣：<span>0.8</span></td>
</tr>
<tr>
<td colspan="3" class="a4">
<div id="jiage">打折后购买商品总价格: 元</div>
</td>
</tr>
</table>
</form>
<script>
function zongji() {
var b1 = document.getelementbyid("n1").value;
var b2 = document.getelementbyid("n2").value;
var b3 = document.getelementbyid("n3").value;
//1.创建对象
var xmlhttp;
if (window.xmlhttprequest) {
// ie7+, firefox, chrome, opera, safari 浏览器执行代码
xmlhttp = new xmlhttprequest();
} else {
// ie6, ie5 浏览器执行代码
xmlhttp = new activexobject("microsoft.xmlhttp");
}
//2.判断对象是否准备就绪
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readystate == 4 && xmlhttp.status == 200) {
document.getelementbyid("jiage").innerhtml = xmlhttp.responsetext;
}
};
//3.发出请求
xmlhttp.open(
"get",
"demo.php?c1=" + b1 + "&c2=" + b2 + "&c3=" + b3,
true
);
xmlhttp.send();
}
</script>
</body>
</html>
data.php
<p> <?php $d1 = $_get["c1"]; $d2 = $_get["c2"]; $d3 = $_get["c3"]; $sum = (intval($d1) * 8 + intval($d2) * +intval($d3) * 7) * 0.8; // $sum=$a1*7.99+$a2*6.89+$a3*3.99; echo "打折后购买商品总价格: $sum 元"; ?> </p>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持代码网。
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