以下是在网上复制的一段代码，亲测可用，根据自己实际的网页内容做简单修改即可使用：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="format-detection" content="telephone=no">
<title>长按事件测试</title>
<script src="static/js/jquey1.12.4.js"></script>
<style type="text/css">
</style>
<body>
<div style="width:100%;">
<div id="touchArea" style="width:90%; height:200px; background-color:#CCC;font-size:100px">长按我</div>
</div>
</body>
<script>
// // H5页面监听长按事件
var timeOutEvent = 0;
$(function() {
$("#touchArea").on({
touchstart: function(e) {
timeOutEvent = setTimeout("longPress()", 500);
e.preventDefault();
},
touchmove: function() {
clearTimeout(timeOutEvent);
timeOutEvent = 0;
},
touchend: function() {
clearTimeout(timeOutEvent);
if (timeOutEvent != 0) {
console.log("这是点击，不是长按");
}
return false;
}
})
});
function longPress() {
timeOutEvent = 0;
console.log("长按事件触发");
}
</script>
</html>