Js欣赏

var obj = {};
var pageIndex = 0;
var pageSize = 6;
var isLoad = true;//是否需要加载(到最后一页时,禁止滚动加载)
var isRequest = false;//是否正在请求(正在请求时,禁止滚动加载)
var rids = new Array();//预推荐id
var nids = new Array();//预取消推荐id

function isNull(value){
    if(value == "" || value == null)
        return true;
    return false;
}
String.prototype.format = function() {
    if (arguments.length == 0)
        return this;
    for (var s = this, i = 0; i < arguments.length; i++)
        s = s.replace(new RegExp("\{" + i + "\}", "g"), arguments[i]);
    return s;
};
function getParam(name){
    var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
    var r = decodeURI(window.location.search).substr(1).match(reg);
    if(r!=null)
            return unescape(r[2]); 
    return null;
}
Array.prototype.indexOf = function(val) {
    for (var i = 0; i < this.length; i++) {
        if (this[i] == val)
            return i;
    }
    return -1;
};
Array.prototype.remove = function(val) {
    var index = this.indexOf(val);
    if (index > -1) {
        this.splice(index, 1);
    }
};

/**
 * 填充数据
 */
obj.initData = function(){
    isRequest = true;
    dids = new Array();
    rids = new Array();
    nids = new Array();
    $.get("/f/store/queryProduct/pageIndex/{0}/pageSize/{1}".format(pageIndex,pageSize), {storeId: obj.id}, function(result){
        if(result.length != 0){
            var str = "";
            for(var i=0; i<result.length; i++){
                str +="<div class='flex-row cart'>";
                str +="    <div class='app-checkbox rdo'>";
                str +="        <input type='checkbox' name='single' id='single"+result[i].id+"' onclick='obj.checkSingle()'>";
                str +="        <label class='iconfont' for='set-default'></label>";
                str +="    </div>";
                str +="    <div class='cart-img'>";
                str +="        <img src='"+result[i].image+"'>";
                str +="    </div>";
                str +="    <div class='flex-item detail has-product-toggle'>";
                str +="        <div class='title'>"+result[i].fullName+"</div>";
                //str +="        <p class='capacity'>容量：30ml</p>";
                str +="        <div class='price'>";
                str +="            <span class='xianjia'>￥"+result[i].price+"</span>";
                str +="            <span class='yuanjia'>￥"+result[i].marketPrice+"</span>";
                str +="            <div class='app-checkbox tuijian'>";
                if(result[i].isRecommend == 1){
                    rids.push(result[i].id);
                    str +="            <input type='checkbox' id='"+result[i].id+"' name='recommend' onclick='obj.recommend(""+result[i].id+"")' checked='checked'>";
                }else{
                    str +="            <input type='checkbox' id='"+result[i].id+"' name='recommend' onclick='obj.recommend(""+result[i].id+"")'>";
                }
                str +="                <label class='iconfont' for='tui-default'></label>";
                str +="                <span>推荐</span>";
                str +="            </div>";
                str +="        </div>";
                str +="    </div>";
                str +="</div>";
            }
            if(pageIndex == 0){
                 $("#productData").empty();
             }
            $("#productData").append(str);
            obj.checkSingle();
            isRequest = false;
             if(result.length < pageSize){
                 isLoad = false;
             }
        }
    })
}

/**
 * 推荐单选
 */
obj.recommend = function(id){
    if($("#"+id).is(':checked')){
        var count = 0;
        var inputs = $('input[name="recommend"]');
        for(var i = 0; i < inputs.length; i++) {
            if(inputs[i].checked == true) {
                count ++;
            }
        }
        if(count > 4){
            alert("每个店铺至多能推荐4件商品");
            $("#"+id).attr('checked',false);
        }else{
            if(rids.indexOf(id) == -1)
                rids.push(id);
            if(nids.indexOf(id) != -1)
                nids.remove(id);
        }
    }else{
        if(rids.indexOf(id) != -1)
            rids.remove(id);
        if(nids.indexOf(id) == -1)
            nids.push(id);
    }
}

/**
 * 删除单选
 */
obj.checkSingle = function(){
    var count = 0;
    var inputs = $('input[name="single"]');
    for(var i = 0; i < inputs.length; i++) {
        if(inputs[i].checked == true) {
            count ++;
        }
    }
    var isCheck = "";
    if(count == inputs.length) {
        isCheck = "checked";
    }
    var all = $('input[name="checkAll"]');
    for(var i = 0; i < all.length; i++) {
        all[i].checked = isCheck;
    }
};

/**
 * 删除全选
 */
obj.checkAll = function(){
    var isCheck = "";
    if($("#set-default-all").is(':checked')){
        isCheck = "checked";
    }
    var inputs = $('input[name="single"]');
    for(var i = 0; i < inputs.length; i++) {
        inputs[i].checked = isCheck;
    }
}

/**
 * 完成
 */
obj.complete = function(){
    $.post("/f/store/redProduct",{ids: rids.join(","), storeId: obj.id, isRecommend: 1},function(result){
    })
    $.post("/f/store/redProduct",{ids: nids.join(","), storeId: obj.id, isRecommend: 0},function(result){
    })
    alert("推荐成功");
    obj.initData();
}

/**
 * 删除
 */
obj.del = function(){
    var dids = new Array();
    var inputs = $('input[name="single"]');
    for(var i = 0; i < inputs.length; i++) {
        if(inputs[i].checked == true) {
            dids.push(inputs[i].id.replace("single", ""));
        }
    }
    $.post("/f/store/delProduct",{ids: dids.join(","), storeId: obj.id},function(result){
        if(result == 1){
            alert("删除成功");
            obj.initData();
        }else{
            alert("删除失败");
        }
    })
}


$(function(){
    obj.id = getParam("id");
    obj.initData();
    $("#complete").click(obj.complete);
    $("#set-default-all").click(obj.checkAll);
    $("#del").click(obj.del);
})

//滚动分页
$(window).scroll(function(){
    var scrollTop = $(this).scrollTop();
    var scrollHeight = $(document).height();
    var windowHeight = $(this).height();
    if(scrollTop/(scrollHeight-windowHeight) >= 0.95 && isRequest == false && isLoad == true){
        pageIndex += pageSize;
        obj.initData();
    }
})