正文
js随机点名系统
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{
background-color: hotpink;
}
.box{
width: 1000px;
height: 240px;
margin: 0 auto;
margin-top: 100px;
clear: both;
}
#btn{
width: 100px;
height: 30px;
margin-left: 600px;
margin-top: 50px;
}
.name{
width: 100px;
height: 30px;
float: left;
background-color: antiquewhite;
margin-left: 10px;
margin-top: 10px;
text-align: center;
line-height: 30px;
}
#span{
float: right;
position: relative;
top: 55px;
right: 185px;
}
h1{
text-align: center;
}
</style> </head>
<body>
<h1>随机点名系统</h1>
<span id="span"></span>
<div class="box" id="box"></div>
<input type="button" id="btn" value="点名"/>
<script type="text/javascript">
//创造虚拟后台数据
var arrs = ["崔雪莉","郭雪芙","嘉歆","阿芳","雪灵","老王","刘疙瘩","许大妈",
"韩晁","静涵","允儿","查灿灿","靓影","杨幂","李静","邓超","李伟","蓝老师"
,"金枝","静恬","允儿","杨幂","晶灵","林志玲","嘉懿","流行","邓超","郭琦"
,"允儿","许大妈","林妹妹","杨幂","佳思","吉玉","张焕","张赛","师傅","菊月"
,"王晶","吉玟","王飞","林志玲","曾艳","王翠青","JaydenLD"];
//获取父元素
var boxNode = document.getElementById("box");
for (var i = 0; i < arrs.length; i++) {
//创建新元素
var divNode = document.createElement("div");
divNode.innerHTML=arrs[i];
divNode.className="name";
boxNode.appendChild(divNode);
}
//点名
var btn= document.getElementById("btn");
btn.onclick = function () {
if(this.value==="点名"){
//定时
timeId=setInterval(function () {
//清空所有颜色
for (var j = 0; j < arrs.length; j++) {
boxNode.children[j].style.background="";
}
//留下当前颜色
var random = parseInt(Math.random()*arrs.length);
boxNode.children[random].style.background="red";
},100);
this.value="停止";
}else{
//清除计时器
clearInterval(timeId);
this.value="点名";
}
}
var spanNode = document.getElementById("span");
//调用时间
getTime();
setInterval(getTime , 1000);
function getTime() {
var day = new Date();
var year = day.getFullYear();
var month = day.getMonth()+1;
var dat = day.getDay();
var hours = day.getHours();
var minitues = day.getMinutes();
var second = day.getSeconds();
spanNode.innerHTML =year+"-"+month+"-"+dat+" "+hours+":"+minitues+":"+second;
}
</script>
</body>
</html>
