JS仿iGoogle自訂首頁模組拖曳特效的方法_javascript技巧-js教程-PHP中文網

本文實例講述了JS仿iGoogle自訂首頁模組拖曳特效的方法。分享給大家供大家參考。具體實作方法如下：

    JS仿iGoogle自訂模組首頁拖曳效果

        var 一般 = {
            getEvent: function() {//ie/ff
                if (document.all) {
                    返回 window.event;
                }
                func = getEvent.caller;
                while (func != null) {
                    var arg0 = func.arguments[0];
                    if (arg0) {
                                  地 >                             返回arg0;
                        }
                    }
                    func = func.caller;
                }
                回空；
            },
            getMousePos: 函數(ev) {
                若 (!ev) {
                    ev = this.getEvent();
                }
                if (ev.pageX || ev.pageY) {
                    返回{
                        x: ev.pageX,
                        y: ev.pageY
                    };
                }

                if (document.documentElement && document.documentElement.scrollTop) {
                    返回{
                        x: ev.clientX document.documentElement.scrollLeft - document.documentElement.clientLeft,
                        y: ev.clientY document.documentElement.scrollTop - document.documentElement.clientTop
                    };
                }
                else if (document.body) {
                    返回{
                        x: ev.clientX document.body.scrollLeft - document.body.clientLeft,
                        y: ev.clientY document.body.scrollTop - document.body.clientTop
                    };
                }
            },
            getElementPos: 函數(el) {
                el = this.getItself(el);
                var _x = 0, _y = 0;
                做{
                    _x = el.offsetLeft;
                    _y = el.offsetTop;
                while (el = el.offsetParent);
                回傳 { x: _x, y: _y };
            },
            getItself: 函數(id) {
                回傳「字串」== typeof id ？             },
            getViewportSize: { w: (window.innerWidth) ? window.innerWidth : (document.documentElement && document.documentElement.clientWidth) ? document.documentElement.clientWidth : (document.body?document.body.offsetWidth:0), h: (window.innerHeight) ？ window.innerHeight : (document.documentElement && document.documentElement. (document.body ? document.body.offsetHeight: 0) },
            isIE: document.all ?真：假，
            setOuterHtml: 函數(obj, html) {
                var Objrange = document.createRange();
                obj.innerHTML = html;
                Objrange.selectNodeContents(obj);
                var frag = Objrange.extractContents();
                obj.parentNode.insertBefore(frag, obj);
                obj.parentNode.removeChild(obj);
            },
            firstChild: 函數(parentObj, tagName) {
                if (Common.isIE) {
                    返回parentObj.firstChild;
                }
                否則{
                    var arr = ParentObj.getElementsByTagName(tagName);
                    回 arr[0];
                }
            },
            lastChild: 函數(parentObj, tagName) {
                if (Common.isIE) {
                    返回parentObj.lastChild;
                }
                否則{
                    var arr = ParentObj.getElementsByTagName(tagName);
                    return arr[arr.length - 1];
                }
            },
            setCookie: 函數(姓名, 值) {
                document.cookie = name "= value;
            },
            getCookie: 函數(姓名) {
                var strCookie = document.cookie;
                var arrCookie = strCookie.split("; ");
                for (var i = 0; i                     var arr = arrCookie[i].split("=");
                    if (!arr[1]) {
                        回復「」;
                    }
                    if (arr[0] == 姓名) {
                        回 arr[1];
                    }
                }
                返回「」；
            },
            delCookie: 函數(姓名) {
                var exp = new Date();
                exp.setTime(exp.getTime() - 1);
                var cval = this.getCookie(name);
                if (cval != null) document.cookie = name "=" cval ";expires=" exp.toGMTString();
            }
        }
        var 類別 = {
            建立：函數（）{
                return function() { this.init.apply(this, 參數); }
            }
        }
        var Drag = Class.create();
        Drag.prototype = {
            初始化：函數（titleBar，dragDiv，選項）{
                //設定點選是否為透明，且預設為透明60%
                titleBar = Common.getItself(titleBar);
                DragDiv = Common.getItself(dragDiv);
                this.dragArea = { maxLeft: -9999, maxRight: 9999, maxTop: -9999, maxBottom: 9999 }; };                 若（選項）{
                                this.opacity = 選項.opacity ? (isNaN(parseInt(Options.opacity)) ? 100 : parseInt(OptiOptions.                     if (選項.區) {
                           left && !isNaN(parseInt(Options.area.left))) { max.                            right && !isNaN(parseInt(Options.area.right))) {this.dragArea.Right.                                      if (Options.area.top && !isNaN(parseInt(Options.area.top)) {this.dragArea.Toptop.                                     if (Options.area.bottom && !isNaN(parseInt(Options.area.bottom))) { Bot.                     }
                }
                否則{
                    this.opacity = 60;
                }
                this.originDragDiv = null;
                this.tmpX = 0;
                this.tmpY = 0;
                this.moveable = false;
                this.dragArray = [];

                var DragObj = this;
                var DragTbl = document.getElementById("dragTable");

                titleBar.onmousedown = function(e) {
                    var ev = e || window.event || Common.getEvent();
                    //且只允許以滑鼠左鍵拖曳方式拖曳,IE滑鼠左鍵為1 FireFox為0
                    if (Common.isIE && ev.button == 1 || !Common.isIE && ev.button == 0) {
                    }
                    else {
                        return alse;
                    }

                    //處理特殊情況：在最上/下面MOVE時不碰到現有DIV的情況下，又回到起始拖曳的列最上/下方
                    var tmpColId;
                    for (c = 0; c                        , (k = 0; k                                , break;
                            }
                        }
                    }
                                var tmpPosFirstChild = Common.getElementPos(Common.firstChild(dragTbl.rows[0].cells[tmpColId], "DIVmp");                                                     var tmpObj = { colId: tmpColId, firstChildUp: tmpPosFirstChild.y, lastChildDown: firstChildUp: tmpPosFirstChild.y, lastChildDown. ).offsetHeight };

                    //以且保留目前可拖曳各容器中的位置
          dragObj.dragArray = dragObj.RegDragsPos();

                    //插入以虛線框圖
                    var dashedElement = document.createElement("div");
                    dashedElement.style.cssText = dragDiv.style.cssText;
                    dashedElement.style.border = " dashed 2px #aaa ";
                    dashedElement.style.marginBottom = "6px";
                                dashedElement.style.width = dragDiv.offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";          dashedElement.style.height = dragDiv.offsetHeight - 2 * parseInt(dashedElement.style.borderWidth) "px"; //加上px 保固FF                dashedElement.style.position = "relative";
                    if (dragDiv.nextSibling) {
                        dragDiv.parentNode.insertBefore(dashedElement, dragDiv.nextSibling);
                    }
                    else {
                        dragDiv.parentNode.appendChild(dashedElement);
                    }
                    //拖曳時變成absolute
                    dragDiv.style.width = dragDiv.offsetWidth "px";
                    dragDiv.style.position = "absolute";

dragObj.moveable = true;

dragDiv.style.zIndex = dragObj.GetZindex() 1;

var downPos = Common.getMousePos(ev);

dragObj.tmpX = downPos.x - dragDiv.offsetLeft;

dragObj.tmpY = downPos.y - dragDiv.offsetTop;

if (Common.isIE) {

dragDiv.setCapture();

                    } else {
                        window.captureEvents(Event.mousemove);
                    }

                    dragObj.SetOpacity(dragDiv, dragObj.opacity);

                    //FireFox 使用容器內拖曳圖片問題
                    if (ev.preventDefault) {
                        ev.preventDefault();
                        ev.stopPropagation();
                    }

                    document.onmousemove = function(e) {
                        if (dragObj.moveable) {
                            var ev = e || window.event || Common.getEvent();
var ev = e || window.event || Common.getEvent();                             //IE 移除容器的拖曳圖片問題
                            if (document.all) //IE
                            {
                                的ev.returnValue = falsese
;                             }

                            var movePos = Common.getMousePos(ev);
                            dragDiv.style.left = Math.max(Math.min(movePos.m. -Obmaxjoto.Obihai dijali dii端)adOdjkijijidiaki dWiakjm.Ob. px";
                            dragDiv.style.top = Math.max(Math.min(movePos.y -ragmObBotj.ragmObinjdraA. x";

var targetDiv = null;
for (var k = 0; k 地 if (dragDiv ====Obj.dragArray[i]) {

                               以來中對中對一點 movePos.xD.Objj.Ldrag.Obj. DragObj.dragArray[k].PosWidth
                                    && movePos.y > DragObj.dragArray[k].PosTop && movePos.y                                 ) {
                                    targetDiv = document.getElementById(dragObj.dragArray[k].DragId);
                                    if (movePos.y                                         // 往上移
                                        dashedElement.style.width = targetDiv.offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";
                                        targetDiv.parentNode.insertBefore(dashedElement, targetDiv);
                                    }
                                    否則{
                                        //往下移
                                        dashedElement.style.width = targetDiv.offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";
                                        if (targetDiv.nextSibling) {
                                            targetDiv.parentNode.insertBefore(dashedElement, targetDiv.nextSibling);
                                        }
                                        否則{
                                            targetDiv.parentNode.appendChild(dashedElement);
                                        }
                                    }
                                }
                            }

                            for (j = 0; j                                 var startLeft = Common.getElementPos(dragTbl.rows[0].cells[j]).x;
                                if (movePos.x > startLeft && movePos.x                                     ///列無DIV
                                    if (dragTbl.rows[0].cells[j].getElementsByTagName("div").length == 0) {
                                        dashedElement.style.width = DragTbl.rows[0].cells[j].offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";
                                        DragTbl.rows[0].cells[j].appendChild(dashedElement);
                                    }
                                    否則{
                                        var posFirstChild = Common.getElementPos(Common.firstChild(dragTbl.rows[0].cells[j], "DIV"));
                                        var posLastChild = Common.getElementPos(Common.lastChild(dragTbl.rows[0].cells[j], "DIV"));
                                        //處理特殊情況：在最上/下面MOVE時不搬運現有DIV的情況下，又回到開始拖曳的列最上/下面
                                        var tmpUp, tmpDown;
                                        if (tmpObj.colId == j) {
                                                                                                                                                                                                                               "DIV").offsetHeight;

                                                                    的"DIV").offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";
                              的      dragTbl.rows[0].cells[j], "DIV"));
                                                                                                             的IV").offsetWidth - 2 * parseInt(dashedElement.style.borderWidth) "px";
                              的

                                                                  }
                            }
                        }
                    };

document.onmouseup = function() {

                        if (dragObj.moveable) {
                            if (Common.isIE) {
                                DragDiv.releaseCapture();
                            }
                            否則{
                                window.releaseEvents(dragDiv.mousemove);
                            }
                            DragObj.SetOpacity(dragDiv, 100);
                            DragObj.moveable = false;
                            DragObj.tmpX = 0;
                            DragObj.tmpY = 0;

// IF中一定要寫於IF內

DragDiv.style.left = "";
DragDiv.style.top = "";

DragDiv.style.width = "";

                            DragDiv.style.position = "";
                            dashedElement.parentNode.insertBefore(dragDiv, dashedElement);
                            dashedElement.parentNode.removeChild(dashedElement);
                        }

};

                }
            },
            SetOpacity: 函數(dragDiv, n) {
                if (Common.isIE) {
                    DragDiv.filters.alpha.opacity = n;
                }
                否則{
                    DragDiv.style.opacity = n / 100;
                }

            },
            GetZindex: function() {
                var maxZindex = 0;
                var divs = document.getElementsByTagName("div");
                for (z = 0; z                     maxZindex = Math.max(maxZindex, divs[z].style.zIndex);
                }
                返回 maxZindex;
            },
            RegDragsPos: function() {
                var arrDragDivs = new Array();
                var DragTbl = document.getElementById("dragTable");
                var tmpDiv, tmpPos;
                for (i = 0; i                     tmpDiv = DragTbl.getElementsByTagName("div")[i];
                    if (tmpDiv.className == "dragDiv") {
                        tmpPos = Common.getElementPos(tmpDiv);
                        arrDragDivs.push({ DragId: tmpDiv.id, PosLeft: tmpPos.x, PosTop: tmpPos.y, PosWidth: tmpDiv.offsetWidth, PosHeight: tmpDiv.offsetHeight });
                    }
                }
                返回 arrDragDivs;
            }
        }

        window.onload = function() {
            var DragTbl = document.getElementById("dragTable");
            if (Common.getCookie("configArr")) {
                var configArr = eval("(" Common.getCookie("configArr") ")");
                for (i = 0; i                     for (j = 0; j                         DragTbl.rows[0].cells[i].appendChild(document.getElementById(configArr[i][j]));
                    }
                }
            }
            new Drag("titleBar1", "dragDiv1");
            new Drag("titleBar2", "dragDiv2");
            new Drag("titleBar3", "dragDiv3");
            new Drag("titleBar4", "dragDiv4");
            new Drag("titleBar5", "dragDiv5");
        }

        window.onunload = function() {
            var DragTbl = document.getElementById("dragTable");
            var configArr = "";
            for (i = 0; i                 var tmpStr = "";
                for (j = 0; j                     tmpStr = (tmpStr == "" ? "" : ",") "'" DragTbl.rows[0].cells[i].getElementsByTagName("DIV")[j].id "'";
                }
                configArr = (configArr == "" ? "" : ",") "[" tmpStr "]";
            }
            //格式如下：[['dragDiv3','dragDiv5'],['dragDiv4','dragDiv1'],['dragDiv2']]
            Common.setCookie("configArr", "[" configArr "]");
        }
    >腳本

    .dragDiv,.nodragDiv{
    位置：相對；
    過濾器：alpha(不透明度=100);
    不透明度：1；
    邊距底部：6px;
    背景顏色：#FFFFFF;
    }
    風格>
頭>