JavaScript

超轻量级php框架startmvc

JavaScript拖动层Div代码

更新时间:2020-04-26 17:00:01 作者:startmvc
效果图:(灰色区域可拖动)代码如下:<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http:/

效果图:(灰色区域可拖动)

代码如下:


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{ margin:0; padding:0;} .div{ width:100px; height:100px; position:absolute;left:100px; top:100px; background:#ccc;}
</style>
</head>
<body>
 <div class="div">
 </div>
 <script type="text/javascript">
 var div = document.getElementsByTagName('div')[0];
 var zIndex = 6;
 drag(div);
 div.ondblclick = function() {
 alert("ok");
 };
 function drag(oDrag) {
 var disX = dixY = 0;
 oDrag.onmousedown = function(event) {
 var event = event || window.event;
 disX = event.clientX - this.offsetLeft;
 disY = event.clientY - this.offsetTop;
 var oTemp = this.cloneNode(true);
 document.body.appendChild(oTemp);
 document.onmousemove = function(event) {
 var event = event || window.event;
 var iL = event.clientX - disX;
 var iT = event.clientY - disY;
 var maxL = document.documentElement.clientWidth - oDrag.offsetWidth;
 var maxT = document.documentElement.clientHeight - oDrag.offsetHeight;
 iL <= 0 && (iL = 0);
 iT <= 0 && (iT = 0);
 iL >= maxL && (iL = maxL);
 iT >= maxT && (iT = maxT);
 oTemp.style.zIndex = zIndex++;
 oTemp.style.opacity = "0.5";
 oTemp.style.filter = "alpha(opacity=50)";
 oTemp.style.left = iL + "px";
 oTemp.style.top = iT + "px";
 return false;
 };
 document.onmouseup = function() {
 document.onmousemove = null;
 document.onmouseup = null;
 oDrag.style.opacity = oTemp.style.opacity;
 var arr = {
 left: oTemp.offsetLeft,
 top: oTemp.offsetTop
 };
 oDrag.style.zIndex = oTemp.style.zIndex;
 oAnimate(oDrag, arr, 300,
 function() {
 document.body.removeChild(oTemp);
 });
 oDrag.releaseCapture && oDrag.releaseCapture()
 };

 this.setCapture && this.setCapture();
 return false
 }
 }
 function oAnimate(obj, params, time, handler) {
 var node = typeof obj == "string" ? $(obj) : obj;
 var _style = node.currentStyle ? node.currentStyle: window.getComputedStyle(node, null);
 var handleFlag = true;
 for (var p in params) { (function() {
 var n = p;
 if (n == "left" || n == "top") {
 var _old = parseInt(_style[n]);
 var _new = parseInt(params[n]);
 var _length = 0,
 _tt = 10;
 if (!isNaN(_old)) {
 var count = _old;
 var length = _old <= _new ? (_new - _old) : (_old - _new);
 var speed = length / time * _tt;
 var flag = 0;
 var anim = setInterval(function() {
 node.style[n] = count + "px";
 count = _old <= _new ? count + speed: count - speed;
 flag += _tt;
 if (flag >= time) {
 node.style[n] = _new + "px";
 clearInterval(anim);
 if (handleFlag) {
 handler();
 handleFlag = false;
 }
 }
 },
 _tt);
 }

 }
 })();
 }
 }
 </script>
 </body>
</html>

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