js 原生图片滑动 + 商品选中 价格叠加 input checkbox 选中 价格相加

要实现的效果 还是截图看容易理解

实现效果

点击图中的左箭头 商品向左移动 右箭头像右移动

左边没有的时候 左箭头不能点击滑动

这个效果要的是右箭头点击 滑动的 是一排四个商品 （也有的需求会是单个商品滑动 这里是控制的滑动宽度决定的~ ）

后面要实现的就是 选中商品 选中  右侧提示 几个搭配商品  总价格 随着变动

下面来看下代码 先实现滑动

HTML 结构

重点 

id="arrLeft" 左箭头ID

id="scrollbox" 包括产品列表的父级ID

id="arrRight" 右箭头ID

 <div class="other-recommend">
           <a href="javascript:void(0)" rel="prev" class="prev left" id="arrLeft"></a>
           <div style="width:730px; height: 242px; overflow: hidden; float: left;" id="scrollbox">

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">350</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">351</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">352</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">353</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">354</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">355</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">356</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">357</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">358</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">359</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">370</i></li>
               </ul>

           </div>
           <a href="javascript:void(0)" rel="next" class="next left" id="arrRight"></a>
       </div>

JS 这里需要先加载一个js文件 编写好的 

<SCRIPT language=javascript type=text/javascript>
           var scrollPic2 = new ScrollPic();
           scrollPic2.scrollContId   = "scrollbox"; //内容容器ID
           scrollPic2.arrLeftId      = "arrLeft";//左箭头ID
           scrollPic2.arrRightId     = "arrRight"; //右箭头ID

           scrollPic2.frameWidth     = 730;//显示框宽度
           scrollPic2.pageWidth      = 730; //翻页宽度180 一个

           scrollPic2.speed          = 10; //移动速度(单位毫秒，越小越快)
           scrollPic2.space          = 10; //每次移动像素(单位px，越大越快)
           scrollPic2.autoPlay       = false; //自动播放
           scrollPic2.autoPlayTime   = 3; //自动播放间隔时间(秒)

           scrollPic2.initialize(); //初始化
       </SCRIPT>

<script type="text/javascript" src="scroll.js"></script>
scroll.js

var sina = {
    $: function (objName) {
        if (document.getElementById) {
            return eval('document.getElementById("' + objName + '")')
        } else {
            return eval('document.all.' + objName)
        }
    },
    isIE: navigator.appVersion.indexOf("MSIE") != -1 ? true : false,
    addEvent: function (l, i, I) {
        if (l.attachEvent) {
            l.attachEvent("on" + i, I)
        } else {
            l.addEventListener(i, I, false)
        }
    },
    delEvent: function (l, i, I) {
        if (l.detachEvent) {
            l.detachEvent("on" + i, I)
        } else {
            l.removeEventListener(i, I, false)
        }
    },
    readCookie: function (O) {
        var o = "", l = O + "=";
        if (document.cookie.length > 0) {
            var i = document.cookie.indexOf(l);
            if (i != -1) {
                i += l.length;
                var I = document.cookie.indexOf(";", i);
                if (I == -1)I = document.cookie.length;
                o = unescape(document.cookie.substring(i, I))
            }
        }
        ;
        return o
    },
    writeCookie: function (i, l, o, c) {
        var O = "", I = "";
        if (o != null) {
            O = new Date((new Date).getTime() + o * 3600000);
            O = "; expires=" + O.toGMTString()
        }
        ;
        if (c != null) {
            I = ";domain=" + c
        }
        ;
        document.cookie = i + "=" + escape(l) + O + I
    },
    readStyle: function (I, l) {
        if (I.style[l]) {
            return I.style[l]
        } else if (I.currentStyle) {
            return I.currentStyle[l]
        } else if (document.defaultView && document.defaultView.getComputedStyle) {
            var i = document.defaultView.getComputedStyle(I, null);
            return i.getPropertyValue(l)
        } else {
            return null
        }
    }
};

function ScrollPic(scrollContId, arrLeftId, arrRightId, dotListId) {
    this.scrollContId = scrollContId;// 滚动父级元素id
    this.arrLeftId = arrLeftId;// 左箭头包裹元素id
    this.arrRightId = arrRightId;// 右箭头包裹元素id
    this.dotListId = dotListId;
    this.dotClassName = "dotItem";
    this.dotOnClassName = "dotItemOn";
    this.dotObjArr = [];
    this.pageWidth = 0;// 翻页宽度
    this.frameWidth = 0;//显示框宽度
    this.speed = 10;//移动速度(单位毫秒，越小越快)
    this.space = 10;
    this.pageIndex = 0;
    this.autoPlay = true;
    this.autoPlayTime = 5;
    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 是ScrollPic对象数量  ScrollPic.childs是ScrollPic*/
    this.ID = ScrollPic.childs.length;
    ScrollPic.childs.push(this);

    this.initialize = function () {
        console.log(ScrollPic.childs.length);
        /*如果没给出滚动父级元素id 就报错*/
        if (!this.scrollContId) {
            throw new Error("?scrollContId.");
            return
        };
        /*获取滚动父元素 如果获取不到元素内容 报错*/
        this.scrollContDiv = sina.$(this.scrollContId);
        if (!this.scrollContDiv) {
            throw new Error("scrollContId??.(scrollContId = \"" + this.scrollContId + "\")");
            return
        };
        /*滚动元素的子元素 宽度 超过隐藏*/
        this.scrollContDiv.style.width = this.frameWidth + "px";
        this.scrollContDiv.style.overflow = "hidden";
        /*获取到的滚动html代码 复制到两个新建的div中*/
        this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
        /*清空滚动元素下的子元素*/
        this.scrollContDiv.innerHTML = "";
        /*父级元素里面 最后面添加节点 strip新的div元素 */
        this.scrollContDiv.appendChild(this.stripDiv);
        /*在strip新div元素最后面一次添加this.listDiv01 和this.listDiv02 的内容*/
        this.stripDiv.appendChild(this.listDiv01);
        this.stripDiv.appendChild(this.listDiv02);
        /*strip元素样式 超出隐藏 层级1 宽度32766px listDiv01 和02 都浮动向左 */
        this.stripDiv.style.overflow = "hidden";
        this.stripDiv.style.zoom = "1";
        this.stripDiv.style.width = "32766px";
        this.listDiv01.style.cssFloat = "left";
        this.listDiv02.style.cssFloat = "left";
        /* 在父级元素滚动 添加鼠标在元素上的事件 和鼠标离开的事件 执行匿名函数  ScrollPic.childs[" + this.ID + "].stop() */
        sina.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPic.childs[" + this.ID + "].stop()"));
        sina.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPic.childs[" + this.ID + "].play()"));
        if (this.arrLeftId) {
            /*获取左箭头对象*/
            this.arrLeftObj = sina.$(this.arrLeftId);
            if (this.arrLeftObj) {
                /*mousedown 在元素上面 鼠标按下触发*/
                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
            }
        }
    }
};

未完继续~ 

 

下面这个是选中商品 右边的商品数量和 总价 在不断变化

示例图

代码贴上 还没有封装个好方法 以后省得老改 - -

 

原理 ：最直接粗暴的低级方法啊~

   选中商品是点击input的onclick事件，包括选中和取消都触发onclick事件，然后判断价格是加还是减，是查看点击input的checked属性为true 来判断依据~

这里的问题就是 单击的元素 我以为是用$(this).checked 来判断 结果是用this.checked来判断  $(this)是返回的jquery对象 所以没有属性checked么~。。。 

<SCRIPT language=javascript type=text/javascript>
/* 参考 http://www.cnblogs.com/-run/archive/2011/11/16/2251250.html checkbox 选中*/
    var select_num = 0,sale_price1=$('.self-price').html();
    $("#scrollbox input:checkbox").click(function(){
        /*选中 几个 商品*/
        var num = $("#scrollbox input:checkbox:checked").length;

        $(".buy-select").find("i").html(num);
        console.log(sale_price1);
        console.log( $(this)  )
        console.log( this.checked  )
        console.log( $(this).attr("checked")  )
        /*选中商品价格 叠加*/
        if(this.checked == true) {
            sale_price1 = parseInt($(this).parent().parent().find(".num").html()) + parseInt(sale_price1);
        }
        else{
            sale_price1 =  parseInt(sale_price1) - parseInt($(this).parent().parent().find(".num").html()) ;
        }

        /*实时商品价格写入~*/
        $(".no5-price").find("em").html(sale_price1);

    })
</SCRIPT>

　　HTML结构

 <!--推荐其他-->
       <div class="other-recommend">
           <a href="javascript:void(0)" rel="prev" class="prev left" id="arrLeft"></a>
           <div style="width:730px; height: 242px; overflow: hidden; float: left;" id="scrollbox">

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">350</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">351</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">352</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">353</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">354</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">355</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">356</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
                   <li class="recommend-goods-title">迪奥魅惑丝柔粉底液200#</li>
                   <li class="recommend-goods-price"><span><input type="checkbox" name="price" class="checkbox"></span>￥ <i class="num">357</i></li>
               </ul>

               <ul class="recommend-goods">
                   <li class="recommend-goods-image"><img src="images/test-product-image.jpg" width="180" height="180"></li>
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