原生js实现随机点餐效果
时间：2021-01-06 11:24:15 | 栏目：JavaScript代码 | 点击：次
html:
<div class="wrap">
<div id="box">
</div>
<button id="start">开始</button>
<button id="stop">停止</button>
css:
.wrap{
width: 500px;
height: 400px;
margin: 0 auto;
text-align: center;
}
#box{
width: 100%;
height: 300px;
border: 1px solid red;
text-align: center;
line-height: 300px;
font-size: 30px;
margin-bottom: 20px;
}
js:
var arr = ['宫保鸡丁', '糖醋里脊', '红烧带鱼', '牛腩煲', '红烧肉'];
var start = document.getElementById("start"),
stop = document.getElementById("stop"),
box = document.getElementById("box"),
timer = null;
start.onclick = function(){
timer = setInterval(function(){
var index = Math.floor(Math.random()*arr.length);
box.innerHTML = arr[index];
}, 100)
}
stop.onclick = function(){
clearInterval(timer);
}
效果：
点击开始，随机切换菜品，点击停止，好了吃鱼吧
总结