<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="author" content="">
<meta name="copyright" content="">
<meta name="keywords" content="">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta content="telephone=no" name="format-detection">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta name="referrer" content="never" charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>拖拽</title>
<!-- <link rel="stylesheet" href="./css/root.css">
<link rel="stylesheet" href="./css/layout.css"> -->
</head>
<style>
.icon {
position: fixed;
right: 0;
bottom: 10%;
z-index: 2;
width: 100px;
height: 100px;
background: url(images/floatImg.png);
}
</style>
<body>
<div class="icon"></div>
</body>
<script src="./js/jq2.0.0.min.js"></script>//引用jquery min 的js文件即可
<script>
$(function () {
$('.icon').on('touchstart', function (e) {
e.preventDefault();
})
$('.icon').on('touchmove', function (e) {
e.preventDefault();
var dw = $('.icon').width(), dh = $('.icon').height();
var startX = e.originalEvent.changedTouches[0].pageX;
var startY = e.originalEvent.changedTouches[0].pageY;
// var moveEndX = e.originalEvent.changedTouches[0].pageX;
// var moveEndY = e.originalEvent.changedTouches[0].pageY;
console.log(dw, dh)
$(this).css({
top: startY - dh / 2,
left: startX - dw / 2,
})
// console.log(startX, startY, moveEndX, moveEndY)
})
$('.icon').on('touchend', function (e) {
e.preventDefault();
})
})
</script>
</html>
项目中效果图如上，可随意推拽至任何位置