走马灯
2020-10-20 本文已影响0人
lucky_yao
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="js/vue.min.js"></script>
</head>
<body>
<div id="app">
<button @click="show">浪起来</button>
<button @click="stop">别浪</button>
<p>{{msg}}</p>
</div>
<script>
// 创建 Vue 实例，得到 ViewModel
var vm = new Vue({
el: '#app',
data: {
msg: '猥琐发育,别浪~~~!',
timer: null
},
methods: {
show() {
if (this.timer == null) {
// var that = this; //this指代的是我们的vue
// that.timer = setInterval(function() { //在定时器中this指的是window
// let strat = that.msg.substring(0, 1);
// let end = that.msg.substring(1);
// that.msg = end + strat;
// }, 500)
this.timer = setInterval(() => {
let strat = this.msg.substring(0, 1);
let end = this.msg.substring(1);
this.msg = end + strat;
},500)
}
},
stop() {
clearInterval(this.timer);
this.timer = null;
}
}
});
</script>
</body>
</html>
