jQuery实现可拖拽功能
以下是一个使用jQuery实现的简单的可拖拽元素示例:
HTML部分:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Draggable Element</title>
<style>
#draggable {
width: 100px;
height: 100px;
background: red;
position: absolute;
cursor: pointer;
}
</style>
</head>
<body>
<div id="draggable"></div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
// jQuery code here
</script>
</body>
</html>
jQuery部分:
$(function() {
var isDragging = false;
var offset = {};
$('#draggable').on('mousedown', function(event) {
isDragging = true;
var $this = $(this);
var x = event.pageX - $this.offset().left;
var y = event.pageY - $this.offset().top;
offset = { x: x, y: y };
});
$(document).on('mousemove', function(event) {
if (isDragging) {
var $draggable = $('#draggable');
$draggable.css('left', (event.pageX - offset.x) + 'px');
$draggable.css('top', (event.pageY - offset.y) + 'px');
}
});
$(document).on('mouseup', function(event) {
isDragging = false;
});
});
这段代码实现了一个可以在页面上拖动的红色方块。用户可以点击方块并将其拖动到新位置。拖动操作是通过监听鼠标事件来实现的。
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