鼠标拖动改变层的大小

 首页 > 网页特效 > 层和布局 > 鼠标拖动改变层的大小

鼠标拖动改变层的大小

 2018-07-20  500  收藏  0 赞一个  0 真差劲  0 去评论

<html>
<head>
<title>拖动改变层的大小</title>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<style> {
box-sizing: border-box; moz-box-sizing: border-box
}
#testDiv     { background-color: buttonface; background-repeat: repeat; 
               background-attachment: scroll; color: #3969A5; height: 300px; 
               left: 30px; overflow: hidden; width: 500; z-index: 2; 
               border: 2px outset white; margin: 0px; padding: 2px; 
               background-position: 0% 50% }
body         { font-family: Verdana; font-size: 9pt }
#innerNice   { background-color: white; background-repeat: repeat; background-attachment: 
               scroll; color: #3969A5; height: 100%; overflow: auto; width: 
               100%; border: 2px inset white; padding: 8px; 
               background-position: 0% 50% }
</style>
<SCRIPT language=javascript>
var theobject = null; 
function resizeObject() {
	this.el        = null; //pointer to the object
	this.dir    = "";      //type of current resize (n, s, e, w, ne, nw, se, sw)
	this.grabx = null;   //Some useful values
	this.graby = null;
	this.width = null;
	this.height = null;
	this.left = null;
	this.top = null;
}
function getDirection(el) {
	var xPos, yPos, offset, dir;
	dir = "";
	xPos = window.event.offsetX;
	yPos = window.event.offsetY;
	offset = 8; //The distance from the edge in pixels
	if (yPos<offset) dir += "n";
	else if (yPos > el.offsetHeight-offset) dir += "s";
	if (xPos<offset) dir += "w";
	else if (xPos > el.offsetWidth-offset) dir += "e";
	return dir;
}

function doDown() {
	var el = getReal(event.srcElement, "className", "resizeMe");

	if (el == null) {
		theobject = null;
		return;
	}		
	dir = getDirection(el);
	if (dir == "") return;
	theobject = new resizeObject();	
	theobject.el = el;
	theobject.dir = dir;
	theobject.grabx = window.event.clientX;
	theobject.graby = window.event.clientY;
	theobject.width = el.offsetWidth;
	theobject.height = el.offsetHeight;
	theobject.left = el.offsetLeft;
	theobject.top = el.offsetTop;
	window.event.returnValue = false;
	window.event.cancelBubble = true;
}

function doUp() {
	if (theobject != null) {
		theobject = null;
	}
}

function doMove() {
	var el, xPos, yPos, str, xMin, yMin;
	xMin = 8; //The smallest width possible
	yMin = 8; //             height
	el = getReal(event.srcElement, "className", "resizeMe");
	if (el.className == "resizeMe") {
		str = getDirection(el);
	//Fix the cursor	
		if (str == "") str = "default";
		else str += "-resize";
		el.style.cursor = str;
	}
//Dragging starts here
	if(theobject != null) {
		if (dir.indexOf("e") != -1)
			theobject.el.style.width = Math.max(xMin, theobject.width + window.event.clientX - theobject.grabx) + "px";
	
		if (dir.indexOf("s") != -1)
			theobject.el.style.height = Math.max(yMin, theobject.height + window.event.clientY - theobject.graby) + "px";

		if (dir.indexOf("w") != -1) {
			theobject.el.style.left = Math.min(theobject.left + window.event.clientX - theobject.grabx, theobject.left + theobject.width - xMin) + "px";
			theobject.el.style.width = Math.max(xMin, theobject.width - window.event.clientX + theobject.grabx) + "px";
		}
		if (dir.indexOf("n") != -1) {
			theobject.el.style.top = Math.min(theobject.top + window.event.clientY - theobject.graby, theobject.top + theobject.height - yMin) + "px";
			theobject.el.style.height = Math.max(yMin, theobject.height - window.event.clientY + theobject.graby) + "px";
		}
		
		window.event.returnValue = false;
		window.event.cancelBubble = true;
	} 
}

function getReal(el, type, value) {
	temp = el;
	while ((temp != null) && (temp.tagName != "BODY")) {
		if (eval("temp." + type) == value) {
			el = temp;
			return el;
		}
		temp = temp.parentElement;
	}
	return el;
}

document.onmousedown = doDown;
document.onmouseup   = doUp;
document.onmousemove = doMove;
</SCRIPT>
</head>
<body>
<div class="resizeMe" id="testDiv">
  <div id="innerNice">
    <p align="center">　</p>
    <p align="center">
请在边框处拖动鼠标</p>
    <p>　</p>
    <p>　</p>
    <p>　</p>
  </div>
</div>


<!-- 以下与演示代码无关,使用时请移除. --> 
	<style type="text/css">
	#azz_discription{ width:600px; height:auto; border:1px dashed #CCC; margin:0 auto; padding:10px;}
	#azz_discription p{ line-height:25px;}
	</style>
	<div style="height:20px;"></div>
	<div id="azz_discription">
	<p style="text-align:center;">来源：<a href="http://www.aizhanzhe.com" target="_blank">懒之才</a>　代码整理：<a href="http://www.aizhanzhe.com" target="_blank">懒之才</a></p>
	<p>&hearts;尊重他人劳动成果，转载请自觉注明出处！注：此代码仅供学习交流，请勿用于商业用途。</p>
	</div>

<!-- 以上与演示代码无关,使用时请移除. --> 



</body>
</html>

运行代码 全选代码 复制代码 清除代码 恢复代码

预览图片

鼠标拖动可改变层大小的一个网页特效，测试时请在右下角边框处拖动鼠标，即可将这个方框变大或变小，网上有不少类似的网页特效实例，根据您的需求，你可以自由修改这些代码。

一、推荐使用迅雷或快车等多线程下载软件下载本站资源。

二、未登录会员无法下载，登录后可获得更多便利功能，若未注册，请先注册。

三、如果服务器暂不能下载请稍后重试！总是不能下载，请点我报错 ,谢谢合作！

四、本站大部分资源是网上搜集或私下交流学习之用，任何涉及商业盈利目的均不得使用，否则产生的一切后果将由您自己承担！本站将不对任何资源负法律责任.如果您发现本站有部分资源侵害了您的权益，请速与我们联系，我们将尽快处理.

五、如有其他问题，请加网站设计交流群(点击这里查看交流群 )进行交流。

六、如需转载本站资源，请注明转载来自并附带链接

七、本站部分资源为加密压缩文件，统一解压密码为：www.aizhanzhe.com

 大家评论

 站长推荐

 点击排行