first commit

历届学生/逯帅帅/项目开发/上课项目/美食App/js/page/index.js

@@ -0,0 +1,249 @@
+class Index {
+  constructor() {
+    this.currentIndex = 0;
+    this.allUserDo = [
+      { type: 1, title: '推荐', page: 1, content: [] },
+      { type: 2, title: '时令', page: 1, content: [] },
+      { type: 3, title: '食肉', page: 1, content: [] },
+      { type: 4, title: '素食', page: 1, content: [] },
+      { type: 5, title: '烘焙', page: 1, content: [] }
+    ];
+    this.getBanner();
+    this.getType();
+    this.getthreeMeals();
+    this.getIndexClass();
+
+  }
+
+  getIndexClass() {
+
+    // 渲染大家都在做的标题和内容
+    this.allUserDo.forEach((v,i) => {
+      $(".userdo").innerHTML += `
+         <li class="${i == 0 ? 'active' : ''}">${v.title}</li>
+      `;
+
+      $(".djdzz_father").innerHTML += `
+            <div class="djdzz_list three_meals_list ${i == 0 ? 'active' : ''}">
+            </div>
+        `;
+    });
+
+    var a = $(".userdo li"),
+        b = $(".djdzz_father .djdzz_list");
+
+    $("body").onscroll = () => {
+      let scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
+      let clientHeight = document.documentElement.clientHeight || document.body.clientHeight;
+      let scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight;
+
+      if(scrollHeight > clientHeight && scrollTop + clientHeight === scrollHeight) {
+        Array.from(b).filter((v,i)=>{
+          if (v.className.indexOf("active") > -1) {
+            this.currentIndex = i;
+          }
+        });
+
+        this.allUserDo[this.currentIndex].page+=1;
+        this.getdata("scroll");
+        console.log(this.currentIndex)
+      }
+    }
+
+    // tabs 切换
+    a.forEach((v, i) => {
+      v.onclick = async () => {
+        this.currentIndex = i;
+        a.forEach((item,index) => {
+          item.className = "";
+          b[index].classList.remove("active")
+        });
+
+        b[i].classList.add("active")
+        v.className = "active";
+        await this.getdata();
+      }
+    });
+
+    this.getdata();
+
+  }
+
+  /**
+   * 获取首页的分类数据
+   * @returns {Promise<void>}
+   */
+  async getdata(type = "click") {
+    if (this.allUserDo[this.currentIndex].content.length == 0 || type == "scroll") {
+      var res = await indexService.indexClass({
+        type: this.allUserDo[this.currentIndex].type,
+        page: this.allUserDo[this.currentIndex].page
+      });
+
+      this.allUserDo[this.currentIndex].content = [
+        ...this.allUserDo[this.currentIndex].content,
+        ...res.items
+      ]
+
+      var currentF = $(".djdzz_father .djdzz_list")[this.currentIndex]
+
+      // 把数据插入到对应的 djdzz_list 中
+      var a = this.allUserDo[this.currentIndex].content;
+      currentF.innerHTML = "";
+      a.forEach((item,i) => {
+        currentF.innerHTML += `
+            <a href="../page/info.html?url=${item.path}">
+            <div class="djdzz_item">
+              ${
+          Array.isArray(item.img)
+            ? `<img src="${item.img[0]}" alt="">`
+            : `<img src="${item.img}" alt="">`
+        }
+              <div class="cons">
+                  <div class="text">${item.title}</div>
+                  ${
+          typeof item.label == "string" || item.label == null
+            ? ''
+            : `<span class="yang">养</span>
+                         <div class="desc">${item.label.desc}</div>`
+        }
+            
+                  ${
+          Array.isArray(item.author) ? '' : `<div class="user">
+                       <div class="user_left">
+                         <img src="${item.author.avatar_url}" alt="">
+                           <span>${item.author.nickname}</span>
+                       </div>
+                       <div class="user_right">
+                         <i class="iconfont iconyanjing"></i>
+                         <span>${item.viewed_amount}</span>
+                       </div>
+                     </div>`
+        }
+              </div>
+            </div>
+            </a>
+            `
+      })
+
+    }
+
+  }
+
+
+
+  /**
+   * banner下面的九宫格数据
+   * @returns {Promise<void>}
+   */
+  async getType() {
+    var res = await indexService.type();
+    res.forEach((v,i) => {
+      $(".menu_type").innerHTML += `
+        <li>
+            <a href="flist.html?id=${v.href}">
+              <img src="${v.img}" alt="">
+              <p>${v.title}</p>
+            </a>
+        </li>
+      `
+    })
+  }
+
+  /**
+   * 每日三餐
+   * @returns {Promise<void>}
+   */
+  async getthreeMeals() {
+    let res = await indexService.threeMeals();
+
+    // 渲染 每日三餐 标题
+    res.forEach((v,i) => {
+      $(".meals_title").innerHTML += `
+          <li class="${i == 0 ? 'active' : ''}">${v.title}</li>
+      `
+    });
+
+    res.forEach((v,i) => {
+      $(".wrapper_list").innerHTML+=`
+            <li class="three_meals_list">
+                ${
+        (v.content.map((item, index) => {
+          return `<div class="three_meals_item">
+                                <img src="${item.img}" alt="">
+                                <div class="text">${item.title}</div>
+                                <span class="yang">养</span>
+                                <div class="desc">${item.des}</div>
+                            </div>`
+        })).toString().replace(/,/g,"")
+      }
+            </li>
+      
+      `;
+    });
+
+    var titleLi = $(".three_title li");
+
+    var threeSwiper = new Swiper(".swiper_list",{
+      time: 1000,
+      initialSlide: 0,
+      loop: false,
+      speed: 300,
+      autoplay: false,
+      grabCursor: true,
+      swiperWrapper: '.wrapper_list',
+      pagination: {
+        el: '.pagination'
+      },
+      on: {
+        slideChange: function (index) {
+          titleLi.forEach(v => v.className = "");
+          titleLi[index].className = "active"
+        }
+      },
+    });
+
+    titleLi.forEach((v,i) => {
+      v.onclick = function () {
+        threeSwiper.slideTo(i)
+      }
+    })
+
+
+
+
+
+  }
+
+  /**
+   * 获取banner数据
+   * @returns {Promise<void>}
+   */
+  async getBanner() {
+    var res = await indexService.banner();
+
+    var bannerFather = $(".swiper-wrapper")
+    res.forEach((v,i)=>{
+      bannerFather.innerHTML += `
+            <li>
+                <a href="./bannerinfo.html?id=${v.url}">
+                    <img src="${v.img}" alt="">
+                </a>
+            </li>
+      `
+    });
+
+    // 初始banner轮播
+    new Swiper(".swiper",{
+      time: 1000,
+      initialSlide: 0,
+      loop: false,
+      speed: 300,
+      autoplay: false,
+      grabCursor: true,
+    });
+  }
+
+}
+
+new Index();