How does the vue component implement the number guessing function?-JS Tutorial-php.cn

How does the vue component implement the number guessing function?

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Release： 2018-04-16 09:15:55

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This time I will show you how the vue component can implement the number guessing function. What are the precautions for the vue component to implement the number guessing function. The following is a practical case, let's take a look.

<!doctype html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>vue组件猜数字游戏</title>
  <script src="js/vue.js"></script>
 </head>
 <body>
 <p id="container">
    <p>{{msg}}</p>
    <my-game></my-game>
  </p>
  <script>
  /*
  *创建一个组件，my-game:
   猜数字大小。
   组件：一个input和一个p构成
   当组件准备挂载的时候，初始化一个随机数，
   在input取输入的时候，
   如果输入的数字小了，在p显示：输入的太小了；
   如果输入的数字大了，在p显示：输入的太大了；
   否则就提示输入正确。
  * */
  //完成组件的创建
    Vue.component("my-game",{
      data:function(){
        return {
          randomNum:0,
          myInput:0,
          result:""
        }
      },
      template:`
        <p>
          <input type="text" v-model.number="myInput"/>
          <br>
          <p>{{result}}</p>
        </p>
      `,
      beforeMount: function () {
    //创建一个100以内的随机的整数
    var num = Math.floor(Math.random()*100);
    console.log(num);
    this.randomNum = num;
    },
      //当数据改变时执行的操作
      watch:{
        myInput:function(){
          if(this.myInput==this.randomNum){
            this.result = "恭喜：猜对了";
          }else if(this.myInput>this.randomNum){
            this.result = "啊哦！猜大了";
          }else{
            this.result = "啊哦！猜小了";
          }
        }
      }
    })
    new Vue({
      el:"#container",
      data:{
        msg:"Hello VueJs"
      }
    })
  </script>
 </body>
</html>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!