拖拽+改变大小

最新推荐文章于 2021-06-08 11:24:13 发布

原创最新推荐文章于 2021-06-08 11:24:13 发布 · 1.1k 阅读

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>拖拽+改变大小</title>
<meta name="description" content="">
<meta name="keywords" content="">
<style>
	*{margin:0; padding: 0;}
	#box{background-color:#ddd; width: 300px; height:200px; position: relative;}
	#box1{border-bottom:10px solid #bbb; border-left:10px solid transparent; width:0; height: 0; position:absolute; bottom:0; right: 0; cursor:nw-resize;}
</style>
<script>
window.onload = function(){
	var oDiv = document.getElementById('box');
	var oArrow = document.getElementById('box1');
	oArrow.onmousedown = function(e){
		var e = e||event;
		var disX = e.clientX - oDiv.offsetLeft;
		var disY = e.clientY - oDiv.offsetTop;
		if(oDiv.setCapture){
			oDiv.onmousemove = fnMove;
			oDiv.onmouseup = fnUp;
			oDiv.setCapture();
		}else{
			oDiv.onmousemove = fnMove;
			oDiv.onmouseup = fnUp;
		}
		function fnMove(e){
			var e = e||event;
			var l = e.clientX + oArrow.offsetWidth;
			var t = e.clientY + oArrow.offsetHeight;
			this.style.width = l+'px';
			this.style.height = t+'px';
		}
		function fnUp(){
			this.onmousemove = null;
			this.onmouseup = null;
			if(this.releaseCapture){
				this.releaseCapture();
			}
		}
		return false;
	}
}
</script>
</head>
<body>
    <div id="box">
    	<div id="box1"></div>
    </div>
</body>
</html>