SOURCE

console 命令行工具 X clear 

                    

                        
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console

            
const Counter = {
    data() {
        return {
            counter: 0,
            message: 'Hello World!'
        }
    },
    mounted() {
        setInterval(() => {
            this.counter++;
        }, 1000)
    }
}

Vue.createApp(Counter).mount('#counter');

            
<div id="counter">
  <div>Counter: {{ counter }}</div>
  <span>{{message}}</div>
</div>



            

                
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