拖动一直抖个不停,求原因和解决办法
html部分
<!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>淘宝展示图</title>
<link rel="stylesheet" href="pei.css" type="text/css">
</head>
<body>
<div id="showBox">
<div id="show_1" style="background-image:url(./img/img_1.jpg)">
<div id="moveBox"></div>
</div>
<div id="show_2"></div>
<ul>
<li style="background-image:url(./img/img_1.jpg)" class="li"></li>
<li style="background-image:url(./img/img_2.jpg)"></li>
<li style="background-image:url(./img/img_3.jpg)"></li>
<li style="background-image:url(./img/img_4.jpg)"></li>
<li style="background-image:url(./img/img_5.jpg)"></li>
<li style="background-image:url(./img/img_6.jpg)"></li>
</ul>
</div>
<script src="jquery.min.js" type="text/javascript"></script>
<script src="pei.js" type="text/javascript"></script>
</body>
</html>
js部分(拖动用的f_4)
$(document).ready(function() {
$('li').on('mouseenter', f_1)
$('#show_1').on('mouseenter', f_2)
$('#show_1').on('mouseleave', f_3)
})
function f_1() {
$('li').removeClass('li');
$(this).addClass('li');
var img = $(this).css('background-image');
$('#show_1').css('background-image', img);
}
function f_2() {
$('#show_2').css('display', 'inline-block');
$('#show_1>div').css('display', 'inline-block');
//$('#show_1').css('position', 'relative');
$(document).on('mousemove', f_4)
}
function f_3() {
$('#show_2').css('display', 'none');
$('#show_1>div').css('display', 'none');
$(document).off('mousemove', f_4)
}
function f_4(e) {
//console.log(e.offsetX)
//console.log(e.offsetY)
//var lication = $('#show_1>div').position();
$('#moveBox').css({ top: e.offsetY, left: e.offsetX })
}