vue-跑马灯demo

<!DOCTYPE html>
<html lang='en'>
<head>
    <meta charset='UTF-8'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script type='text/javascript' src='js/vue.js'></script>
</head>
<body>
    <div id='app'>
        <button @click="start">一个字干！！！</button>
        <button @click="stop">别浪</button>
        <p >{{msg}}</p>
    </div>
    <script type='text/javascript'>
        var vm = new Vue({
            el: '#app',
            data: {
                msg: '猥琐发育，别浪!!!',
                timer:null
            },
            methods:{
                start(){
                    if(this.timer != null){
                        alert('不要再点了，我要爆炸了！');
                        return
                    }
                    // 设置定时器
                    this.timer = setInterval(()=>{
                        var startStr = this.msg.substring(0,1)//利用字符串截取msg里面的第一个值
                        // console.log(startStr);
                        var endStr = this.msg.substring(1)//截取后面的字符串
                        this.msg = endStr + startStr
                        console.log(this.msg);
                    },1000)
                },
                stop(){
                    clearInterval(this.timer)
                    this.timer = null
                }
            }      
        });
    </script>
</body>
</html>
第一次分享，希望能给同样进阶的你一些提示
vue-跑马灯demo

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