vue中的v-show,v-if,v-bind的使用示例详解

 <div id='app'>
    <input type="button" value="切换显示状态" @click="changeIsshow">
    <input type="button" value="增加年龄" @click="addage">
    <img v-show="isshow" width="200px" height="200px"
      src="https://guangzan.gitee.io/imagehost/Illustrations/summer.png" />
    <img v-show="age>=18" width="200px" height="200px"
      src="https://guangzan.gitee.io/imagehost/Illustrations/summer.png" />
  </div>
<script>
    Vue.config.productionTip = false //阻止vue在启动时生成生产提示。
    var app = new Vue({
      el: '#app',
      data: {
        isshow: false,
        age: 17,
      },
      methods: {
        changeIsshow: function () {
          this.isshow = !this.isshow;
        },
        addage: function () {
          this.age++;
        }
      },

    })
  </script>

<div id='app'>
    <input type="button" value="显示/隐藏" @click="changehide">
   <p v-if="isshow">卷完后端卷前端</p>
   <p v-show="isshow">卷完后端卷前端-vshow</p>

  </div>
 <script>
    Vue.config.productionTip = false //阻止vue在启动时生成生产提示。
    var app = new Vue({
      el: '#app',
      data: {
      isshow:false,
      },
      methods: {
        changehide:function(){
          this.isshow = !this.isshow;
        }
      },
    })
  </script>

    <style>
    .active{
      border: 1px solid red;
    }

  </style>
<div id='app'>
  <img v-bind:src="imgsrc"  width="200px" height="200px"  alt=""/><br>
  <img :src="imgsrc"  width="200px" height="200px"  alt="" :title="title+'!!!'"  :class="isactive?'active':''" @click="togactive"/>
  <img :src="imgsrc"  width="200px" height="200px"  alt="" :title="title+'!!!'"  :class="{active:isactive}" @click="togactive"/>
  </div>
<script>
    Vue.config.productionTip = false //阻止vue在启动时生成生产提示。
    var app = new Vue({
      el: '#app',
      data: {
        imgsrc:"https://guangzan.gitee.io/imagehost/Illustrations/summer.png",
        title:"vUE卷你",
        isactive:false,
      },
      methods: {
        togactive:function(){
          this.isactive = !this.isactive;
        }
      },
    })
  </script>