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vue2.0如何实现选项卡导航效果

发布时间:2022-03-02 12:24:33 来源:亿速云 阅读:190 作者:小新 栏目:开发技术

小编给大家分享一下vue2.0如何实现选项卡导航效果,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!

具体内容如下

1:背景是一个web端的电商网站,根据点击的导航选项卡呈现不同得种类商品,首先这里说下我的路由结构是导航是一个组件,选项卡的内容又是单独的一个组件。

这是导航组件的内容,这里主要通过v-for循环生成导航,没什么好说的,需要注意的是,这因为选项卡需要知道用户所点击的是哪个模块,所以在数据中有个typeId属性,这里需要把该属性值传给选项卡组件。

<template>
     <ul class="nav">
         <li v-for="nav in navs" :id="nav.typeId" @click="seeClothes($event)" :class="nav.className">
             {{nav.title}}
         </li>
     </ul>
  </header>
</template>
<script>
export default {
  data(){
      return{
          navs:[
              {
                  title:"Home",
                  path:'/home/second',
                  typeId:'1',
                  className:'currLi'
              },
              {
                  title:"男装",
                  path:'/home/second',
                  typeId:'2'
              },
              {
                  title:"女装",
                  path:'/home/second',
                  typeId:'3'
              },
              {
                  title:"童装",
                  path:'/home/second',
                  typeId:'4'
              }
          ]
      }
  },methods:{
      seeClothes(event){
          var el=event.currentTarget;
          var type=el.getAttribute("id");
            var a = [];
            var p = el.parentNode.children;
            for(var i =0,pl= p.length;i<pl;i++) {
                p[i].classList.remove("currLi");
            }
          event.currentTarget.classList.add("currLi");
          this.$router.push({path:'/home/clothesType',query:{type:type}})
      }
  }
}
</script>

这里用到的知识点

1:v-for循环实现导航的生成

2:在函数中如何得到当前点击元素的某个属性值

这里给每个li绑定了点击事件,该元素绑定的id值是我们所需要传给选项卡组件的,所以我们在绑定事件的时候需要在click函数中添加参数,注意看我这里绑定事件的时候是这样写的

<li v-for="nav in navs" :id="nav.typeId" @click="seeClothes($event)" :class="nav.className">
             {{nav.title}}
         </li>

点击事件是这样写的

seeClothes(event){
          var el=event.currentTarget;//这样是获取当前点击的元素
          var type=el.getAttribute("id");//这样就可以获取当前元素的id属性值
            var a = [];//声明一个空数组,用来存放当前点击元素的所有的兄弟元素,用来实现只给当前点击的元素动态加背景色
            var p = el.parentNode.children;
            for(var i =0,pl= p.length;i<pl;i++) {
                p[i].classList.remove("currLi");
            }
          event.currentTarget.classList.add("currLi");//for循环是实现给当前元素的兄弟元素去除currLi类,实现只有当前点击元素有背景色
          this.$router.push({path:'/home/clothesType',query:{type:type}})//点击导航路由跳转,并且通过query对象将type参数传过去
      }

现在参数传过去了,我们看下选项卡组件是怎么写的

<template>
  <div>
      <div class="typeBox">
          <ul class="closeType">
              <li v-for="item in data" >
                  <div class="npBox">
                      <img :src="'../static/img/'+item.img" class="cDetail">
                      <div class="npInnerBox">
                          <p class="name" >{{item.name}}</p>
                          <p class="price">{{item.price}}</p>
                          <el-input-number v-model="num1" @change="handleChange" :min="1" :max="10" label="描述文字"></el-input-number>
                          <button class="addCart" @click="addCart($event)">加入购物车</button>
                          <span v-bind:id="item.id" ></span>
                      </div>
                  </div>
              </li>
          </ul>
      </div>
  </div>
</template>
<script>
export default {
  data(){
      return{
          type:'',
          data:'',
          num1: 1,
          userCart:[],
          currentPage4:'',
          pageSize:'',
          total:''
      }
  },
  methods:{
     changeData(){
             this.type=this.$route.query.type;
                 if(this.type=="2"){
              this.data=[
              {
                  img:'m1.jpg',
                  name:'黑白条纹裙',
                  id:'M1',
                  price:'100',
              },
              {
                  img:'m2.jpg',
                  name:'水蓝色斑点无袖连衣裙',
                      id:'M2',
                  price:'199',
              },
              {
                  img:'m3.jpg',
                  name:'短袖职业套装',
                      id:'M3',
                  price:'135',
              },
              {
                  img:'m4.jpg',    
                  name:'黑色职业套装',
                      id:'M4',
                  price:'288',
              },
              {
                  img:'m5.jpg',
                  name:'格子衬衫',
                      id:'M5',
                  price:'155',
              },
              {
                  img:'m6.jpg',
                  name:'女性性感短裙',
                      id:'M6',
                  price:'300',
              }
              ];
          }else if(this.type=="3"){
                  this.data=[
              {
                  img:'clothes1.jpg',
                  name:'黑白条纹裙',
                  id:'W1',
                  price:'100',
              },
              {
                  img:'clothes2.jpg',
                  name:'水蓝色斑点无袖连衣裙',
                      id:'W2',
                  price:'199',
              },
              {
                  img:'clothes3.jpg',
                  name:'短袖职业套装',
                      id:'W3',
                  price:'135',
              },
              {
                  img:'clothes4.jpg',    
                  name:'黑色职业套装',
                      id:'W4',
                  price:'288',
              },
              {
                  img:'clothes5.jpg',
                  name:'格子衬衫',
                      id:'W5',
                  price:'155',
              },
              {
                  img:'clothes6.jpg',
                  name:'女性性感短裙',
                      id:'W6',
                  price:'300',
              }
              ];
          }else if(this.type=="性感职业装"){
                  this.data=[
              {
                  img:'clothes1.jpg',
                  name:'黑白条纹裙',
                  id:'W1',
                  price:'100',
              },
              {
                  img:'clothes2.jpg',
                  name:'水蓝色斑点无袖连衣裙',
                      id:'W2',
                  price:'199',
              },
              {
                  img:'clothes3.jpg',
                  name:'短袖职业套装',
                      id:'W3',
                  price:'135',
              },
              {
                  img:'clothes4.jpg',    
                  name:'黑色职业套装',
                      id:'W4',
                  price:'288',
              },
              {
                  img:'clothes5.jpg',
                  name:'格子衬衫',
                      id:'W5',
                  price:'155',
              },
              {
                  img:'clothes6.jpg',
                  name:'女性性感短裙',
                      id:'W6',
                  price:'300',
              }
              ];
          }else if(this.type==1){
                  this.data=[
              {
                  img:'m3.jpg',
                  name:'黑白条纹裙',
                  id:'M1',
                  price:'100',
              },
              {
                  img:'m4.jpg',    
                  name:'黑色职业套装',
                      id:'M4',
                  price:'288',
              },
              {
                  img:'m5.jpg',
                  name:'格子衬衫',
                      id:'M5',
                  price:'155',
              },
              {
                  img:'clothes4.jpg',    
                  name:'黑色职业套装',
                      id:'W4',
                  price:'288',
              },
              {
                  img:'clothes5.jpg',
                  name:'格子衬衫',
                      id:'W5',
                  price:'155',
              },
              {
                  img:'clothes6.jpg',
                  name:'女性性感短裙',
                      id:'W6',
                  price:'300',
              }
              ];
          }
    }
  },
   created(){
         this.changeData()
  },
  watch:{
       "$route": "changeData"
  }
  
}
</script>

当时就是这里,给我带来了一些困扰,一开始我是把获取数据的changeData方法写在了mounted钩子函数中,但是这样的后果是只有在首次路由跳转的时候才会起作用,再次点击导航的时候数据不会改变

why?因为mounted是创建组件页面元素挂载以后会走里面的方法~想一下,你再次点击的时候只会路由跳转,并不会重新创建组件,所以~

我在想怎么能每次点击导航路由跳转以后都重新走一次获取数据的changeData方法,我想了想,因为导航点击每次都会进行路由跳转,所以~我可以在watch里监听路由跳转,这样每次点击导航的时候都会触发监听方法,从而会调用changeData方法~~解决了不是~~上面的代码有具体的写法

最后说下如何监听路由

watch:{
  "$route": "changeData"
}

以上是“vue2.0如何实现选项卡导航效果”这篇文章的所有内容,感谢各位的阅读!相信大家都有了一定的了解,希望分享的内容对大家有所帮助,如果还想学习更多知识,欢迎关注亿速云行业资讯频道!

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