手势包括点击（tap），长按（press），滑动（swipe），方向（pan）
使用实例：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
<meta charset="UTF-8">
<link rel="stylesheet" href="reset.min.css" />
<title></title>
<style>
#myElement {
background: silver;
height: 300px;
text-align: center;
font: 30px/300px Helvetica, Arial, sans-serif;
}
</style>
</head>
<body class="flex-column center-center">
<div id="myElement"></div>
<script type="text/javascript" src="hammer.js"></script>
<script>
var myElement = document.getElementById(‘myElement‘);
var hammer = new Hammer(myElement);
hammer.on("swipeleft", function (ev) {
console.log(ev.type);
});
hammer.on("swiperight", function (ev) {
console.log(ev.type);
});
hammer.on("panleft panright panup pandown tap press", function (ev) {
console.log(ev.type);
});
</script>
</body>
</html>
原文：https://www.cnblogs.com/yycc11/p/9450922.html