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我试图在我的浏览器简单的例子
<html>
<head>
</script src="https://hammerjs.github.io/dist/hammer.js">
</script>
<script>
var myElement = document.getElementById('myElement');
// create a simple instance
// by default, it only adds horizontal recognizers
var mc = new Hammer(myElement);
// listen to events...
mc.on("panleft panright tap press", function(ev) {
myElement.textContent = ev.type + " gesture detected.";
});
</script>
<style type="text/css">
#myElement {
background: black;
height: 300px;
text-align: center;
font: 30px/300px Helvetica, Arial, sans-serif;
}
</style>
</head>
<body>
<div id="myElement"></div>
</body>
</html>
我试图执行此代码运行像水龙头刷卡简单的手势代码,但这正显示出错误 无法读取属性“的addEventListener”的null