简化版的网页拖放效果-Drag-and-drop

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引入JS
- 3.0.0 2.2.0 2.1.4 2.1.3 2.1.2 2.1.1 2.1.0 2.0.3 2.0.2 2.0.1 2.0.0 1.12.0 1.11.3 1.11.2 1.11.1 1.11.0 1.10.2 1.10.1 1.10.0 1.9.1 1.9.0 1.8.3 1.8.2 1.8.1 1.8.0 1.7.2 1.7.1 1.7 1.6.4 1.6.2 1.6.1 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0
- 1.7.3 1.7.2 1.7.1.0 1.7.0.0
- 2.0.0-beta.0 2.0.0-alpha.55 1.5.0-rc.0 1.4.8 1.4.0 1.3.20 1.2.29 1.1.5 1.0.8
- 1.8.3 1.7.0 1.6.0 1.5.2 1.4.4 1.3.3 1.2.4 1.1.7
- 1.10.4 1.9.7 1.8.10 1.7.8 1.6.3 1.5.4 1.4.6 1.3.3
- core1.6.0 core-compat1.6.0 core1.5.2 core-compat1.5.2 core-full-compat-yc1.4.5 core-full-compat1.4.5 core-full-nocompat-yc1.4.5 core-full-nocompat1.4.5
- 1.4.2 1.4.1 1.4.0 1.3.0 1.2.0 1.1.0
- 3.7.3 3.7.2 3.7.1 3.7.0 3.7 3.6.2 3.6.1 3.6

引入框架
- 1.4.5 1.4.4 1.4.3 1.4.2 1.4.1 1.4.0 1.3.2
- 1.11.4 1.11.3 1.11.2 1.11.1 1.11.0 1.10.4 1.10.3 1.10.2
- 3.3.6 3.3.5 3.3.0 3.2.0 2.3.2

汉王

HTML代码

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<!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=gb2312" />
<title>简易拖放效果</title>
</head>
<body>
<script> 
var isIE = (document.all) ? true : false;
var $ = function (id) {
	return "string" == typeof id ? document.getElementById(id) : id;
};
 
var Class = {
	create: function() {
		return function() { this.initialize.apply(this, arguments); }
	}
}
 
var Extend = function(destination, source) {
	for (var property in source) {
		destination[property] = source[property];
	}
}
 
var Bind = function(object, fun) {
	return function() {
		return fun.apply(object, arguments);
	}
}
 
var BindAsEventListener = function(object, fun) {
	return function(event) {
		return fun.call(object, (event || window.event));
	}
}
 
function addEventHandler(oTarget, sEventType, fnHandler) {
	if (oTarget.addEventListener) {
		oTarget.addEventListener(sEventType, fnHandler, false);
	} else if (oTarget.attachEvent) {
		oTarget.attachEvent("on" + sEventType, fnHandler);
	} else {
		oTarget["on" + sEventType] = fnHandler;
	}
};
 
function removeEventHandler(oTarget, sEventType, fnHandler) {
    if (oTarget.removeEventListener) {
        oTarget.removeEventListener(sEventType, fnHandler, false);
    } else if (oTarget.detachEvent) {
        oTarget.detachEvent("on" + sEventType, fnHandler);
    } else { 
        oTarget["on" + sEventType] = null;
    }
};
 
//拖放程序
var SimpleDrag = Class.create();
SimpleDrag.prototype = {
  //拖放对象,触发对象
  initialize: function(drag) {
	this.Drag = $(drag);
	this._x = this._y = 0;
	this._fM = BindAsEventListener(this, this.Move);
	this._fS = Bind(this, this.Stop);
	this.Drag.style.position = "absolute";
	addEventHandler(this.Drag, "mousedown", BindAsEventListener(this, this.Start));
  },
  //准备拖动
  Start: function(oEvent) {
	this._x = oEvent.clientX - this.Drag.offsetLeft;
	this._y = oEvent.clientY - this.Drag.offsetTop;
	addEventHandler(document, "mousemove", this._fM);
	addEventHandler(document, "mouseup", this._fS);
  },
  //拖动
  Move: function(oEvent) {
	this.Drag.style.left = oEvent.clientX - this._x + "px";
	this.Drag.style.top = oEvent.clientY - this._y + "px";
  },
  //停止拖动
  Stop: function() {
	removeEventHandler(document, "mousemove", this._fM);
	removeEventHandler(document, "mouseup", this._fS);
  }
};
</script>
<div id="idDrag" style="border:5px solid #0000FF; background:#C4E3FD; width:50px; height:50px;"></div>
<script> 
new SimpleDrag("idDrag");
</script>
</body>
</html>

CSS代码

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JS代码

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名称

简化版的网页拖放效果-Drag-and-drop

分类

网站常用

描述

一个简化版的网页拖放效果-Drag-and-drop，如果忽略很多细节，实现起来很简单，但往往细节才是难点所在。程序的原型是在做图片切割效果的时候做出来的，希望大家通过本例对拖放特效的实现有一个大致的掌握。