请问这个JS 如何让它不循环呢？

Question

<SCRIPT language=javascript type=text/javascript>
                                    var scrollPic_02 = new ScrollPic();
                                    scrollPic_02.scrollContId   = "scrollbox"; //内容容器ID
                                    scrollPic_02.arrLeftId      = "arrLeft";//左箭头ID
                                    scrollPic_02.arrRightId     = "arrRight"; //右箭头ID
                            
                                    scrollPic_02.frameWidth     = 604;//显示框宽度
                                    scrollPic_02.pageWidth      = 101; //翻页宽度
                            
                                    scrollPic_02.speed          = 10; //移动速度(单位毫秒，越小越快)
                                    scrollPic_02.space          = 10; //每次移动像素(单位px，越大越快)
                                    scrollPic_02.autoPlay       = false; //自动播放
                                    scrollPic_02.autoPlayTime   = 3; //自动播放间隔时间(秒)
                            
                                    scrollPic_02.initialize(); //初始化
                            </SCRIPT>

Answer 1

应该还有css html结构吧？这样怎么看
推荐一个插件。
http://www.zhangxinxu.com/jq/jcarousel_zh/

Answer 2

什么不循环？
你那边的只是调用的代码真正的程序逻辑在  ScrollPic 构造函数中

Answer 3

  scrollPic_02.autoPlay = false; //自动播放
  scrollPic_02.autoPlayTime = 3; //自动播放间隔时间(秒)
  scrollPic_02.loop = false; //循环播放 <========　是不是可以加上这个啊．要看支不支持了
  

Answer 4

function ScrollPic(scrollContId, arrLeftId, arrRightId, dotListId) {
    this.scrollContId = scrollContId;
    this.arrLeftId = arrLeftId;
    this.arrRightId = arrRightId;
    this.dotListId = dotListId;
    this.dotClassName = "dotItem";
    this.dotOnClassName = "dotItemOn";
    this.dotObjArr = [];
    this.pageWidth = 0;
    this.frameWidth = 0;
    this.speed = 10;
    this.space = 10;
    this.pageIndex = 0;
    this.autoPlay = true;
    this.autoPlayTime = 5;
this.loop = false;
    var _autoTimeObj,
    _scrollTimeObj,
    _state = "ready";
    this.stripDiv = document.createElement("DIV");
    this.listDiv01 = document.createElement("DIV");
    this.listDiv02 = document.createElement("DIV");
    if (!ScrollPic.childs) {
        ScrollPic.childs = []
    };
    this.ID = ScrollPic.childs.length;
    ScrollPic.childs.push(this);
    this.initialize = function() {
        if (!this.scrollContId) {
            throw new Error("?scrollContId.");
            return
        };
        this.scrollContDiv = sina.$(this.scrollContId);
        if (!this.scrollContDiv) {
            throw new Error("scrollContId??.(scrollContId = \"" + this.scrollContId + "\")");
            return
        };
        this.scrollContDiv.style.width = this.frameWidth + "px";
        this.scrollContDiv.style.overflow = "hidden";
        this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
        this.scrollContDiv.innerHTML = "";
        this.scrollContDiv.appendChild(this.stripDiv);
        this.stripDiv.appendChild(this.listDiv01);
        this.stripDiv.appendChild(this.listDiv02);
        this.stripDiv.style.overflow = "hidden";
        this.stripDiv.style.zoom = "1";
        this.stripDiv.style.width = "32766px";
        this.listDiv01.style.cssFloat = "left";
        this.listDiv02.style.cssFloat = "left";
        sina.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPic.childs[" + this.ID + "].stop()"));
        sina.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPic.childs[" + this.ID + "].play()"));
        if (this.arrLeftId) {
            this.arrLeftObj = sina.$(this.arrLeftId);
            if (this.arrLeftObj) {
                sina.addEvent(this.arrLeftObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].rightMouseDown()"));
                sina.addEvent(this.arrLeftObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"));
                sina.addEvent(this.arrLeftObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"))
            }
        };
        if (this.arrRightId) {
            this.arrRightObj = sina.$(this.arrRightId);
            if (this.arrRightObj) {
                sina.addEvent(this.arrRightObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].leftMouseDown()"));
                sina.addEvent(this.arrRightObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"));
                sina.addEvent(this.arrRightObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"))
            }
        };
        if (this.dotListId) {
            this.dotListObj = sina.$(this.dotListId);
            if (this.dotListObj) {
                var pages = Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4),
                i,
                tempObj;
                for (i = 0; i < pages; i++) {
                    tempObj = document.createElement("span");
                    this.dotListObj.appendChild(tempObj);
                    this.dotObjArr.push(tempObj);
                    if (i == this.pageIndex) {
                        tempObj.className = this.dotClassName
                    } else {
                        tempObj.className = this.dotOnClassName
                    };
                    tempObj.title = "" + (i + 1) + "?";
                    sina.addEvent(tempObj, "click", Function("ScrollPic.childs[" + this.ID + "].pageTo(" + i + ")"))
                }
            }
        };
        if (this.autoPlay) {
            this.play()
        }
    };
    this.leftMouseDown = function() {
        if (_state != "ready") {
            return
        };
        _state = "floating";
        _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveLeft()", this.speed)
    };
    this.rightMouseDown = function() {
        if (_state != "ready") {
            return
        };
        _state = "floating";
        _scrollTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].moveRight()", this.speed)
    };
    this.moveLeft = function() {
        if (this.scrollContDiv.scrollLeft + this.space >= this.listDiv01.scrollWidth) {
            this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + this.space - this.listDiv01.scrollWidth
        } else {
            this.scrollContDiv.scrollLeft += this.space
        };
        this.accountPageIndex()
    };
    this.moveRight = function() {
        if (this.scrollContDiv.scrollLeft - this.space <= 0) {
            this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - this.space
        } else {
            this.scrollContDiv.scrollLeft -= this.space
        };
        this.accountPageIndex()
    };
    this.leftEnd = function() {
        if (_state != "floating") {
            return
        };
        _state = "stoping";
        clearInterval(_scrollTimeObj);
        var fill = this.pageWidth - this.scrollContDiv.scrollLeft % this.pageWidth;
        this.move(fill)
    };
    this.rightEnd = function() {
        if (_state != "floating") {
            return
        };
        _state = "stoping";
        clearInterval(_scrollTimeObj);
        var fill = -this.scrollContDiv.scrollLeft % this.pageWidth;
        this.move(fill)
    };
    this.move = function(num, quick) {
        var thisMove = num / 5;
        if (!quick) {
            if (thisMove > this.space) {
                thisMove = this.space
            };
            if (thisMove < -this.space) {
                thisMove = -this.space
            }
        };
        if (Math.abs(thisMove) < 1 && thisMove != 0) {
            thisMove = thisMove >= 0 ? 1: -1
        } else {
            thisMove = Math.round(thisMove)
        };
        var temp = this.scrollContDiv.scrollLeft + thisMove;
        if (thisMove > 0) {
            if (this.scrollContDiv.scrollLeft + thisMove >= this.listDiv01.scrollWidth) {
                this.scrollContDiv.scrollLeft = this.scrollContDiv.scrollLeft + thisMove - this.listDiv01.scrollWidth
            } else {
                this.scrollContDiv.scrollLeft += thisMove
            }
        } else {
            if (this.scrollContDiv.scrollLeft - thisMove <= 0) {
                this.scrollContDiv.scrollLeft = this.listDiv01.scrollWidth + this.scrollContDiv.scrollLeft - thisMove
            } else {
                this.scrollContDiv.scrollLeft += thisMove
            }
        };
        num -= thisMove;
        if (Math.abs(num) == 0) {
            _state = "ready";
            if (this.autoPlay) {
                this.play()
            };
            this.accountPageIndex();
            return
        } else {
            this.accountPageIndex();
            setTimeout("ScrollPic.childs[" + this.ID + "].move(" + num + "," + quick + ")", this.speed)
        }
    };
    this.next = function() {
        if (_state != "ready") {
            return
        };
        _state = "stoping";
        this.move(this.pageWidth, true)
    };
    this.play = function() {
        if (!this.autoPlay) {
            return
        };
        clearInterval(_autoTimeObj);
        _autoTimeObj = setInterval("ScrollPic.childs[" + this.ID + "].next()", this.autoPlayTime * 1000)
    };
    this.stop = function() {
        clearInterval(_autoTimeObj)
    };
    this.pageTo = function(num) {
        if (_state != "ready") {
            return
        };
        _state = "stoping";
        var fill = num * this.frameWidth - this.scrollContDiv.scrollLeft;
        this.move(fill, true)
    };
    this.accountPageIndex = function() {
        this.pageIndex = Math.round(this.scrollContDiv.scrollLeft / this.frameWidth);
        if (this.pageIndex > Math.round(this.listDiv01.offsetWidth / this.frameWidth + 0.4) - 1) {
            this.pageIndex = 0
        };
        var i;
        for (i = 0; i < this.dotObjArr.length; i++) {
            if (i == this.pageIndex) {
                this.dotObjArr[i].className = this.dotClassName
            } else {
                this.dotObjArr[i].className = this.dotOnClassName
            }
        }
    }
};