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微信小程序之 SideBar(侧栏分类)

微信程序 分类
2023-09-11 14:15:30 时间

项目目录:

模拟数据:

utils / data.js

function getSData() {
  var data = [
    {
      "id": 1,
      "tree": {
        "id": 1,
        "desc": "宝宝奶粉",
        "desc2": null,
        "level": "level1",
        "logo": null,
        "popular": null,
        "nodes": [
          {
            "id": 1,
            "tree": {
              "id": 1,
              "desc": "牛奶粉",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E7%89%9B%E5%A5%B6%E7%B2%89.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 157,
                  "tree": {
                    "id": 157,
                    "desc": null,
                    "desc2": "a2 PLATINUM",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2Fa2.jpg",
                    "popular": 157,
                    "nodes": null
                  }
                },
                {
                  "id": 7,
                  "tree": {
                    "id": 7,
                    "desc": "德国爱他美",
                    "desc2": "Aptamil",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E7%88%B1%E4%BB%96%E7%BE%8E.jpg",
                    "popular": 7,
                    "nodes": null
                  }
                },
                {
                  "id": 161,
                  "tree": {
                    "id": 161,
                    "desc": "爱他美白金",
                    "desc2": "Aptamil pro",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo/%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89/%E7%99%BD%E9%87%91%E5%A5%B6%E7%B2%89-1.jpg",
                    "popular": 161,
                    "nodes": null
                  }
                },
                {
                  "id": 158,
                  "tree": {
                    "id": 158,
                    "desc": "澳洲爱他美",
                    "desc2": "Aptamil",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E6%BE%B3%E6%B4%B2%E7%88%B1%E4%BB%96%E7%BE%8E.jpg",
                    "popular": 158,
                    "nodes": null
                  }
                },
                {
                  "id": 8,
                  "tree": {
                    "id": 8,
                    "desc": "荷兰牛栏",
                    "desc2": "Nutrilon",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E7%89%9B%E6%A0%8F.jpg",
                    "popular": 8,
                    "nodes": null
                  }
                },
                {
                  "id": 166,
                  "tree": {
                    "id": 166,
                    "desc": "英国牛栏",
                    "desc2": "Cow&Cate",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo/%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89/%E8%8B%B1%E5%9B%BD%E7%89%9B%E6%A0%8Flogo.jpeg",
                    "popular": 166,
                    "nodes": null
                  }
                },
                {
                  "id": 9,
                  "tree": {
                    "id": 9,
                    "desc": "德国喜宝有机",
                    "desc2": "HiPP",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E5%96%9C%E5%AE%9D.jpg",
                    "popular": 9,
                    "nodes": null
                  }
                },
                {
                  "id": 11,
                  "tree": {
                    "id": 11,
                    "desc": "德国喜宝益生菌",
                    "desc2": "HiPP",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E5%96%9C%E5%AE%9D.jpg",
                    "popular": 11,
                    "nodes": null
                  }
                },
                {
                  "id": 13,
                  "tree": {
                    "id": 13,
                    "desc": "澳洲贝拉米",
                    "desc2": "BELLMAY'S",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E8%B4%9D%E6%8B%89%E7%B1%B3.jpg",
                    "popular": 13,
                    "nodes": null
                  }
                },
                {
                  "id": 14,
                  "tree": {
                    "id": 14,
                    "desc": "荷兰美素",
                    "desc2": "Hero Baby",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%AE%9D%E5%AE%9D%E5%A5%B6%E7%B2%89%2F%E8%8D%B7%E5%85%B0%E7%BE%8E%E7%B4%A0.jpg",
                    "popular": 14,
                    "nodes": null
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "id": 2,
      "tree": {
        "id": 2,
        "desc": "纸尿裤",
        "desc2": null,
        "level": "level1",
        "logo": null,
        "popular": null,
        "nodes": [
          {
            "id": 4,
            "tree": {
              "id": 4,
              "desc": "纸尿裤",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 16,
                  "tree": {
                    "id": 16,
                    "desc": "花王",
                    "desc2": "Merries",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E8%8A%B1%E7%8E%8B.jpg",
                    "popular": 16,
                    "nodes": null
                  }
                },
                {
                  "id": 17,
                  "tree": {
                    "id": 17,
                    "desc": "大王",
                    "desc2": "Goon",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E5%A4%A7%E7%8E%8B.jpg",
                    "popular": 17,
                    "nodes": null
                  }
                },
                {
                  "id": 18,
                  "tree": {
                    "id": 18,
                    "desc": "尤妮佳",
                    "desc2": "Moony",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E5%B0%A4%E4%BD%B3%E5%A6%AE.jpg",
                    "popular": 18,
                    "nodes": null
                  }
                }
              ]
            }
          },
          {
            "id": 29,
            "tree": {
              "id": 29,
              "desc": "湿巾",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E6%B9%BF%E5%B7%BE.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 49,
                  "tree": {
                    "id": 49,
                    "desc": "贝亲",
                    "desc2": "Pigeon",
                    "level": null,
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E8%B4%9D%E4%BA%B2.jpg",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 16,
                  "tree": {
                    "id": 16,
                    "desc": "花王",
                    "desc2": "Merries",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E7%BA%B8%E5%B0%BF%E8%A3%A4%2F%E8%8A%B1%E7%8E%8B.jpg",
                    "popular": 16,
                    "nodes": null
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "id": 3,
      "tree": {
        "id": 3,
        "desc": "辅食营养",
        "desc2": null,
        "level": "level1",
        "logo": null,
        "popular": null,
        "nodes": [
          {
            "id": 10,
            "tree": {
              "id": 10,
              "desc": "宝宝营养",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%AE%9D%E5%AE%9D%E8%90%A5%E5%85%BB.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 114,
                  "tree": {
                    "id": 114,
                    "desc": "挪帝克",
                    "desc2": "NORDIC NATURALS",
                    "level": "level3",
                    "logo": "",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 34,
                  "tree": {
                    "id": 34,
                    "desc": "童年时光",
                    "desc2": "ChildLife",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2FChildLife.jpg",
                    "popular": 34,
                    "nodes": null
                  }
                },
                {
                  "id": 35,
                  "tree": {
                    "id": 35,
                    "desc": "",
                    "desc2": "Bio Island",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2FBio-Island-1.jpg",
                    "popular": 35,
                    "nodes": null
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "id": 4,
      "tree": {
        "id": 4,
        "desc": "母婴专区",
        "desc2": null,
        "level": "level1",
        "logo": null,
        "popular": null,
        "nodes": [
          {
            "id": 11,
            "tree": {
              "id": 11,
              "desc": "喂养用具",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%96%82%E5%85%BB%E7%94%A8%E5%85%B7.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 63,
                  "tree": {
                    "id": 63,
                    "desc": "",
                    "desc2": "NUK",
                    "level": "level3",
                    "logo": "",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 52,
                  "tree": {
                    "id": 52,
                    "desc": "啾啾",
                    "desc2": "chuchu",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Fchuchu.jpg",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 60,
                  "tree": {
                    "id": 60,
                    "desc": "",
                    "desc2": "Born free",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Fbornfree.jpg",
                    "popular": 60,
                    "nodes": null
                  }
                },
                {
                  "id": 24,
                  "tree": {
                    "id": 24,
                    "desc": "可么多么",
                    "desc2": "comotomo",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Fcomotomo.jpg",
                    "popular": 24,
                    "nodes": null
                  }
                },
                {
                  "id": 62,
                  "tree": {
                    "id": 62,
                    "desc": "",
                    "desc2": "boon",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Fboon.jpg",
                    "popular": 62,
                    "nodes": null
                  }
                },
                {
                  "id": 27,
                  "tree": {
                    "id": 27,
                    "desc": "膳魔师",
                    "desc2": "THERMOS",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2FTHERMOS.jpg",
                    "popular": 27,
                    "nodes": null
                  }
                },
                {
                  "id": 28,
                  "tree": {
                    "id": 28,
                    "desc": "",
                    "desc2": "thinkbaby",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Fthinkbaby.jpg",
                    "popular": 28,
                    "nodes": null
                  }
                },
                {
                  "id": 29,
                  "tree": {
                    "id": 29,
                    "desc": "麦肯齐",
                    "desc2": "munchkin",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2FMunchkin.jpg",
                    "popular": 29,
                    "nodes": null
                  }
                },
                {
                  "id": 30,
                  "tree": {
                    "id": 30,
                    "desc": "",
                    "desc2": "Lansinoh",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2Flansionoh.jpg",
                    "popular": 30,
                    "nodes": null
                  }
                },
                {
                  "id": 50,
                  "tree": {
                    "id": 50,
                    "desc": "和光堂",
                    "desc2": "WaKoDo",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%85%89%E5%90%88%E5%A0%82.jpg",
                    "popular": 50,
                    "nodes": null
                  }
                }
              ]
            }
          },
          {
            "id": 9,
            "tree": {
              "id": 9,
              "desc": "宝宝洗护",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%AE%9D%E5%AE%9D%E6%B4%97%E6%8A%A4.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 51,
                  "tree": {
                    "id": 51,
                    "desc": "小林制药",
                    "desc2": "KOBAYASHI",
                    "level": null,
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%B0%8F%E6%9E%97%E5%88%B6%E8%8D%AF.jpg",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 49,
                  "tree": {
                    "id": 49,
                    "desc": "贝亲",
                    "desc2": "Pigeon",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E8%B4%9D%E4%BA%B2.jpg",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 31,
                  "tree": {
                    "id": 31,
                    "desc": "加州宝宝",
                    "desc2": "CALIFORNIA BABY",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%8A%A0%E5%B7%9E%E5%AE%9D%E5%AE%9D.jpg",
                    "popular": 31,
                    "nodes": null
                  }
                },
                {
                  "id": 32,
                  "tree": {
                    "id": 32,
                    "desc": "艾维诺",
                    "desc2": "Aveeno",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2FAveeno.jpg",
                    "popular": 32,
                    "nodes": null
                  }
                },
                {
                  "id": 33,
                  "tree": {
                    "id": 33,
                    "desc": "小蜜蜂",
                    "desc2": "BURT'S BEES",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%B0%8F%E8%9C%9C%E8%9C%82.jpg",
                    "popular": 33,
                    "nodes": null
                  }
                },
                {
                  "id": 50,
                  "tree": {
                    "id": 50,
                    "desc": "和光堂",
                    "desc2": "WaKoDo",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%85%89%E5%90%88%E5%A0%82.jpg",
                    "popular": 50,
                    "nodes": null
                  }
                }
              ]
            }
          },
          {
            "id": 12,
            "tree": {
              "id": 12,
              "desc": "宝宝口腔护理",
              "desc2": null,
              "level": "level2",
              "logo": "http://image.huanqiuxiaozhen.com/%E7%B2%BE%E9%80%89%E5%88%86%E7%B1%BB%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%AE%9D%E5%AE%9D%E5%8F%A3%E8%85%94%E6%8A%A4%E7%90%86.jpg",
              "popular": null,
              "nodes": [
                {
                  "id": 113,
                  "tree": {
                    "id": 113,
                    "desc": "香蕉宝宝",
                    "desc2": "BABY BANANA",
                    "level": null,
                    "logo": "",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 43,
                  "tree": {
                    "id": 43,
                    "desc": "狮王",
                    "desc2": "Lion",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E5%B1%85%E5%AE%B6%E6%97%A5%E7%94%A8%2F%E7%8B%AE%E7%8E%8B.jpg",
                    "popular": null,
                    "nodes": null
                  }
                },
                {
                  "id": 49,
                  "tree": {
                    "id": 49,
                    "desc": "贝亲",
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                    "desc": "施华洛世奇",
                    "desc2": "SWAROVSKI",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo/%E6%9C%8D%E9%A5%B0%E7%AE%B1%E5%8C%85/%E6%96%BD%E5%8D%8E%E6%B4%9B%E4%B8%96%E5%A5%87logo.jpeg",
                    "popular": 167,
                    "nodes": null
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "id": 12,
      "tree": {
        "id": 12,
        "desc": "专场大促",
        "desc2": null,
        "level": "level1",
        "logo": null,
        "popular": null,
        "nodes": [
          {
            "id": 121,
            "tree": {
              "id": 121,
              "desc": "原产国奶粉专场",
              "desc2": null,
              "level": "level2",
              "logo": null,
              "popular": null,
              "nodes": [
                {
                  "id": 50,
                  "tree": {
                    "id": 50,
                    "desc": "和光堂",
                    "desc2": "WaKoDo",
                    "level": "level3",
                    "logo": "http://image.huanqiuxiaozhen.com/%E5%93%81%E7%89%8Clogo%2F%E6%AF%8D%E5%A9%B4%E4%B8%93%E5%8C%BA%2F%E5%85%89%E5%90%88%E5%A0%82.jpg",
                    "popular": null,
                    "nodes": null
                  }
                }
              ]
            }
          }
        ]
      }
    }
  ];
  return data || [];
}
module.exports = {
  getSData: getSData
}

模板一:

1.逻辑层

audiobook.js

// pages/audiobook/audiobook.js
var data_ = require('../../utils/data.js')

Page({

  /**
   * 页面的初始数据
   */
  data: {
    navLeftItems: [],
    navRightItems: [],
    curNav: 1,
    curIndex: 0
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function () {
    this.setData({
      navLeftItems: data_.getSData(),
      navRightItems: data_.getSData()
    })
  },

  //事件处理函数  
  switchRightTab: function (e) {
    // 获取item项的id,和数组的下标值  
    let id = e.target.dataset.id,
      index = parseInt(e.target.dataset.index);
    // 把点击到的某一项,设为当前index  
    this.setData({
      curNav: id,
      curIndex: index
    })
  }
})

2.页面布局

audiobook.wxml

<!--pages/audiobook/audiobook.wxml-->
<!--主盒子-->  
<view class="container">  
  <!--左侧栏-->  
  <view class="nav_left">  
    <block wx:for="{{navLeftItems}}" wx:key="id">  
      <!--当前项的id等于item项的id,那个就是当前状态-->  
      <!--用data-index记录这个数据在数组的下标位置,使用data-id设置每个item的id值,供打开2级页面使用-->  
      <view class="nav_left_items {{curNav == item.id ? 'active' : ''}}" bindtap="switchRightTab" data-index="{{index}}" data-id="{{item.id}}">{{item.tree.desc}}</view>  
    </block>  
  </view>  
  <!--右侧栏-->  
  <view class="nav_right">  
    <!--如果有数据,才遍历项-->  
    <view wx:if="{{navRightItems[curIndex].tree.nodes[1].tree.nodes}}">  
      <block wx:for="{{navRightItems[curIndex].tree.nodes[1].tree.nodes}}" wx:key="id">  
        <view class="nav_right_items">  
          <navigator url="../list/index?brand={{item.tree.id}}&typeid={{navRightItems[curIndex].id}}">  
            <!--用view包裹图片组合,如果有图片就用,无图片提供就使用50x30的这个默认图片-->  
            <view>                
              <block wx:if="{{item.tree.logo}}">  
                <image src="{{item.tree.logo}}"></image>  
              </block>  
              <block wx:else>  
                <image src="http://temp.im/50x30"></image>  
              </block>  
            </view>  
            <!--如果有文字,就用文字;无文字就用其他-->  
            <view wx:if="{{item.tree.desc}}">  
              <text>{{item.tree.desc}}</text>  
            </view>  
            <view wx:else>  
              <text>{{item.tree.desc2}}</text>  
            </view>  
          </navigator>  
        </view>  
      </block>  
    </view>  
    <!--如果无数据,则显示数据-->  
    <view wx:else>暂无数据</view>  
  </view>  
</view>

3.样式

audiobook.wxss

/* pages/audiobook/audiobook.wxss */
page{  
  background: #f5f5f5;  
}  
/*总体主盒子*/  
.container {  
  position: relative;  
  width: 100%;  
  height: 100%;  
  background-color: #fff;  
  color: #939393;  
}  
  
/*左侧栏主盒子*/  
.nav_left{  
  /*设置行内块级元素(没使用定位)*/  
  display: inline-block;  
  width: 25%;  
  height: 100%;  
  /*主盒子设置背景色为灰色*/  
  background: #f5f5f5;  
  text-align: center;  
}  
/*左侧栏list的item*/  
.nav_left .nav_left_items{  
  /*每个高30px*/  
  height: 30px;  
  /*垂直居中*/  
  line-height: 30px;  
  /*再设上下padding增加高度,总高42px*/  
  padding: 6px 0;  
  /*只设下边线*/  
  border-bottom: 1px solid #dedede;  
  /*文字14px*/  
  font-size: 14px;  
}  
/*左侧栏list的item被选中时*/  
.nav_left .nav_left_items.active{  
  /*背景色变成白色*/  
  background: #fff;  
}  
  
/*右侧栏主盒子*/  
.nav_right{  
  /*右侧盒子使用了绝对定位*/  
  position: absolute;  
  top: 0;  
  right: 0;  
  flex: 1;  
  /*宽度75%,高度占满,并使用百分比布局*/  
  width: 75%;  
  height: 100%;  
  padding: 10px;  
  box-sizing: border-box;  
  background: #fff;  
}  
/*右侧栏list的item*/  
.nav_right .nav_right_items{  
  /*浮动向左*/  
  float: left;  
  /*每个item设置宽度是33.33%*/  
  width: 33.33%;  
  height: 80px;  
  text-align: center;  
}  
.nav_right .nav_right_items image{  
  /*被图片设置宽高*/  
  width: 50px;  
  height: 30px;  
}  
.nav_right .nav_right_items text{  
  /*给text设成块级元素*/  
  display: block;  
  margin-top: 5px;  
  font-size: 10px;  
  /*设置文字溢出部分为...*/  
  overflow: hidden;  
  white-space: nowrap;  
  text-overflow: ellipsis;  
}

4.效果图

 

模板二:

1.逻辑层

mine.js

// pages/mine/mine.js
Page({

  /**
   * 页面的初始数据
   */
  data: {
    cateItems: [
      {
        cate_id: 1,
        cate_name: "护肤",
        ishaveChild: true,
        children:
        [
          {
            child_id: 1,
            name: '洁面皂',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161208/148117972563.jpg"
          },
          {
            child_id: 2,
            name: '卸妆',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161207/148110444480.jpg"
          },
          {
            child_id: 3,
            name: '洁面乳',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161208/148117973270.jpg"
          },
          {
            child_id: 4,
            name: '面部祛角质',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161208/148117981591.jpg"
          }
        ]
      },
      {
        cate_id: 2,
        cate_name: "彩妆",
        ishaveChild: true,
        children:
        [
          {
            child_id: 1,
            name: '气垫bb',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/14815381301.jpg"
          },
          {
            child_id: 2,
            name: '修容/高光',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/14815381411.jpg"
          },
          {
            child_id: 3,
            name: '遮瑕',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/148153815181.jpg"
          },
          {
            child_id: 4,
            name: '腮红',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/148153815759.jpg"
          },
          {
            child_id: 5,
            name: '粉饼',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/148153816983.jpg"
          },
          {
            child_id: 6,
            name: '粉底',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/148153817721.jpg"
          },
          {
            child_id: 7,
            name: '蜜粉/散粉',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161212/148153819354.jpg"
          },
          {
            child_id: 8,
            name: '隔离霜',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161215/148179053369.jpg"
          }
        ]
      },
      {
        cate_id: 3,
        cate_name: "香水/香氛",
        ishaveChild: true,
        children:
        [
          {
            child_id: 1,
            name: '淡香水EDT',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161213/14815978910.jpg"
          },
          {
            child_id: 2,
            name: '浓香水EDP',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161213/148159789883.jpg"
          },
          {
            child_id: 3,
            name: '香体走珠',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161213/14815979307.jpg"
          },
          {
            child_id: 4,
            name: '古龙香水男士的最爱',
            image: "http://mz.djmall.xmisp.cn/files/logo/20161213/148159765589.jpg"
          }
        ]
      },
      {
        cate_id: 4,
        cate_name: "个人护理",
        ishaveChild: false,
        children: []
      }
    ],
    curNav: 1,
    curIndex: 0
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
  
  },

  //事件处理函数  
  switchRightTab: function (e) {
    // 获取item项的id,和数组的下标值  
    let id = e.target.dataset.id,
      index = parseInt(e.target.dataset.index);
    // 把点击到的某一项,设为当前index  
    this.setData({
      curNav: id,
      curIndex: index
    })
  }
})

2.页面布局

mine.wxml

<!--pages/mine/mine.wxml-->
<!--主盒子-->
<view class="container">
  <!--左侧栏-->
  <view class="nav_left">
    <block wx:for="{{cateItems}}" wx:key="id">
      <!--当前项的id等于item项的id,那个就是当前状态-->
      <!--用data-index记录这个数据在数组的下标位置,使用data-id设置每个item的id值,供打开2级页面使用-->
      <view class="nav_left_items {{curNav == item.cate_id ? 'active' : ''}}" bindtap="switchRightTab" data-index="{{index}}" data-id="{{item.cate_id}}">{{item.cate_name}}</view>
    </block>
  </view>
  <!--右侧栏-->
  <view class="nav_right">
    <!--如果有数据,才遍历项-->
    <view wx:if="{{cateItems[curIndex].ishaveChild}}">
      <block wx:for="{{cateItems[curIndex].children}}" wx:key="id">
        <view class="nav_right_items">
        <!--界面跳转 -->
          <navigator url="../../detail/detail}}">
            <image src="{{item.image}}"></image>
            <text>{{item.name}}</text>
          </navigator>
        </view>
      </block>
    </view>
    <!--如果无数据,则显示数据-->
    <view class="nodata_text" wx:else>该分类暂无数据</view>
  </view>
</view>

3.样式

mine.wxss

/* pages/mine/mine.wxss */
page{  
  background: #f5f5f5;  
}  
/*总体主盒子*/  
.container {  
  position: relative;  
  width: 100%;  
  height: 100%;  
  background-color: #fff;  
  color: #939393;  
}
 /*左侧栏主盒子*/  
.nav_left{  
  /*设置行内块级元素(没使用定位)*/  
  display: inline-block;  
  width: 25%;  
  height: 100%;  
  /*主盒子设置背景色为灰色*/  
  background: #f5f5f5;  
  text-align: center;  
}  
/*左侧栏list的item*/  
.nav_left .nav_left_items{  
  /*每个高30px*/  
  height: 40px;  
  /*垂直居中*/  
  line-height: 40px;  
  /*再设上下padding增加高度,总高42px*/  
  padding: 6px 0;  
  /*只设下边线*/  
  border-bottom: 1px solid #dedede;  
  /*文字14px*/  
  font-size: 14px; 
}  
/*左侧栏list的item被选中时*/  
.nav_left .nav_left_items.active{  
  /*背景色变成白色*/  
  background: #fff;  
  color: #f0145a; 
}  
/*右侧栏主盒子*/  
.nav_right{  
  /*右侧盒子使用了绝对定位*/  
  position: absolute;  
  top: 0;  
  right: 0;  
  flex: 1;  
  /*宽度75%,高度占满,并使用百分比布局*/  
  width: 75%;  
  height: 1000px;  
  padding: 10px;  
  box-sizing: border-box;  
  background: #fff;  
}  
/*右侧栏list的item*/  
.nav_right .nav_right_items{  
  /*浮动向左*/  
  float: left;  
  /*每个item设置宽度是33.33%*/  
  width: 33.33%;  
  height: 120px;  
  text-align: center;  
}  
.nav_right .nav_right_items image{  
  /*被图片设置宽高*/  
  width: 60px;  
  height: 60px;  
  margin-top: 15px;  
}  
.nav_right .nav_right_items text{  
  /*给text设成块级元素*/  
  display: block;  
  margin-top: 15px;  
  font-size: 14px;  
  color: black;
  /*设置文字溢出部分为...*/  
  overflow: hidden;  
  white-space: nowrap;  
  text-overflow: ellipsis;  
} 
.nodata_text{
  color: black;
  font-size: 14px;  
  text-align: center;  
}

4.效果图