demo1：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>JSONP</title>
</head>
<body id="body">
<div id="divCustomers"></div>
<script type="text/javascript">
<!DOCTYPE html>
<html lang="en">
