javascript实现行拖动的方法

本文实例讲述了javascript实现行拖动的方法。分享给大家供大家参考。具体如下：
<！doctype html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>行拖动</title><script> window.onload = function（）{ //绑定事件 var addEvent = document.addEventListener ? function（el,type,callback）{el.addEventListener（ type, callback, ！1 ）; } : function（el,type,callback）{el.attachEvent（ "on" + type, callback ）; } //判定对样式的支持 var getStyleName= （function（）{var prefixes = ["", "-ms-","-moz-", "-webkit-", "-khtml-", "-o-"];var reg_cap = /-（[a-z]）/g;function getStyleName（css, el） {el = el || document.documentElement;var style = el.style,test;for （var i=0, l=prefixes.length; i < l; i++） {test = （prefixes[i] + css）.replace（reg_cap,function（$0,$1）{return $1.toUpperCase（）;}）;if（test in style）{return test;}}return null;}return getStyleName; }）（）; var userSelect = getStyleName（"user-select"）; //精确获取样式 var getStyle = document.defaultView ? function（el,style）{return document.defaultView.getComputedStyle（el, null）.getPropertyValue（style） } : function（el,style）{style = style.replace（/-（w）/g, function（$, $1）{return $1.toUpperCase（）;}）;return el.currentStyle[style]; } var dragManager = {y:0,dragStart:function（e）{e = e || event;var handler = e.target || e.srcElement;if（handler.nodeName === "TD"）{handler = handler.parentNode;dragManager.handler = handler;if（！handler.getAttribute（"data-background"））{handler.setAttribute（"data-background",getStyle（handler,"background-color"））}//显示为可移动的状态handler.style.backgroundColor = "#ccc";handler.style.cursor = "move";dragManager.y = e.clientY;if（typeof userSelect === "string"）{return document.documentElement.style[userSelect] = "none";}document.unselectable = "on";document.onselectstart = function（）{return false;}}},draging:function（e）{//mousemove时拖动行var handler = dragManager.handler;if（handler）{e = e || event;var y = e.clientY;var down = y > dragManager.y;//是否向下移动var tr = document.elementFromPoint（e.clientX,e.clientY）;if（tr && tr.nodeName == "TD"）{tr = tr.parentNodedragManager.y = y;if（ handler ！== tr）{ tr.parentNode.insertBefore（handler, （down ? tr.nextSibling : tr））;}};}},dragEnd:function（）{var handler = dragManager.handlerif （handler） {handler.style.backgroundColor = handler.getAttribute（"data-background"）;handler.style.cursor = "default";dragManager.handler = null;}if（typeof userSelect === "string"）{return document.documentElement.style[userSelect] = "text";}document.unselectable = "off";document.onselectstart = null;},main:function（el）{addEvent（el,"mousedown",dragManager.dragStart）;addEvent（document,"mousemove",dragManager.draging）;addEvent（document,"mouseup",dragManager.dragEnd）;} } var el = document.getElementById（"table"）; dragManager.main（el）; }</script><style>.table{width:60%;border: 1px solid red;border-collapse: collapse;}.table td{border: 1px solid red;height: 20px;}</style></head><body><h1>行拖动</h1><table id="table" class="table"><tbody><tr><td>1</td><td>One</td><td>dom.require</td></tr><tr id="2" ><td class="2">2</td><td>Two</td><td>ControlJS </td></tr><tr id="3" ><td class="3">3</td><td>Three</td><td>HeadJS</td></tr><tr id="4" ><td class="4">4</td><td>Four</td><td>LAB.js</td></tr><tr id="5" ><td class="5">5</td><td>Five</td><td>$script.js</td></tr><tr id="6" ><td class="6">6</td><td>Six</td><td>NBL.js</td></tr></tbody></table></body></html>
希望本文所述对大家的javascript程序设计有所帮助。