<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>拖拽改变大小（兼容移动端）</title>
<script type="text/javascript" src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<!-- <link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css"> -->
<script type="text/javascript">
/*
* jQuery.Resize by Own
* Date:2014.01.08
*/
$(function () {
var target = document.querySelector('#resizeable');
//初始化参数
var els = target.style,
//鼠标的 X 和 Y 轴坐标
x = y = 0;
//绑定需要拖拽改变大小的元素对象 -----pc端---
bindResize(target);
// 移动端拖拽 -------------------
// 手指按下
target.addEventListener('touchstart', function (e) {
x = e.targetTouches[0].pageX - target.offsetWidth,
y = e.targetTouches[0].pageY - target.offsetHeight;
e.preventDefault()
});
target.addEventListener('touchmove', function (e) {
//运算中...
els.width = e.targetTouches[0].pageX - x + 'px',
els.height = e.targetTouches[0].pageY - y + 'px'
})
});
function bindResize(el) {
var els = el.style,
//鼠标的 X 和 Y 轴坐标
x = y = 0;
//鼠标按下事件
$(el).mousedown(function (e) {
//按下元素后，计算当前鼠标与对象计算后的坐标
x = e.clientX - el.offsetWidth,
y = e.clientY - el.offsetHeight;
//在支持 setCapture 做些东东
el.setCapture ? (
//捕捉焦点
el.setCapture(),
//设置事件
el.onmousemove = function (ev) {
mouseMove(ev || event)
},
el.onmouseup = mouseUp
) : (
//绑定事件
$(document).bind("mousemove", mouseMove).bind("mouseup", mouseUp)
)
//防止默认事件发生
e.preventDefault()
});
//移动事件
function mouseMove(e) {
//运算中...
els.width = e.clientX - x + 'px',
els.height = e.clientY - y + 'px'
}
//停止事件
function mouseUp() {
//在支持 releaseCapture 做些东东
el.releaseCapture ? (
//释放焦点
el.releaseCapture(),
//移除事件
el.onmousemove = el.onmouseup = null
) : (
//卸载事件
$(document).unbind("mousemove", mouseMove).unbind("mouseup", mouseUp)
)
}
}
</script>
</head>
<body>
<div id="resizeable" class="ui-widget-content" style="border: 1px solid red; width: 400px; height: 300px;">
<h3 class="ui-widget-header">Resizable</h3>
</div>
</body>
</html>