<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
</head>
<style type="text/css">
body {
font-size: 12px;
}
* {
margin: 0;
padding: 0;
}
ul li,
ol li {
list-style: none;
}
.fl {
float: left;
}
.cl:after {
display: block;
clear: both;
content: "";
visibility: hidden;
height: 0
}
.cl {
zoom: 1
}
.main {
500px;
margin: auto;
}
.addName {
margin: 20px 0;
}
.addName input {
200px;
height: 30px;
border-radius: 5px;
border: 1px solid #ddd;
margin-right: 5px;
padding-left: 10px;
}
.addName .btn {
80px;
height: 32px;
border-radius: 5px;
border: 1px solid #ddd;
}
.allName {
max-height: 300px;
overflow: auto;
padding: 10px;
}
.allName li {
padding: 0 10px;
height: 30px;
border-radius: 5px;
border: 1px solid #ddd;
margin-right: 10px;
margin-bottom: 10px;
line-height: 30px;
float: left;
position: relative;
}
.allName li i {
font-style: normal;
font-size: 10px;
16px;
height: 16px;
background: #FF0000;
line-height: 16px;
text-align: center;
color: #fff;
border-radius: 50%;
position: absolute;
right: -4px;
top: -4px;
cursor: pointer;
}
.spotName {
font-size: 50px;
text-align: center;
margin-top: 20px;
font-weight: bold;
}
.startBtn {
100px;
height: 50px;
border: 2px solid #ddd;
border-radius: 5px;
font-size: 20px;
text-align: center;
line-height: 50px;
cursor: pointer;
margin: auto;
margin-top: 30px;
font-weight: bold;
color: #666;
}
</style>
<body>
<div class="main">
<div class="addName cl">
<input class="input-name fl" type="text" onkeyup="this.value=this.value.replace(/s+/g,'')" />
<button class="btn fl">确定</button>
</div>
<ul class="allName cl"></ul>
<div class="spotName"></div>
<div class="startBtn">开始</div>
</div>
<script>
$(function() {
var arr = [], //数组
myreg = /^[a-zA-Z0-9u4e00-u9fa5]{2,500}$/, //名字正则
stime,
falg = true;
//添加名字
$(".btn").click(function() {
var InputVal = $(".input-name").val();
if(InputVal != '') {
if(!myreg.test(InputVal)) {
alert('名字格式不正确')
} else {
arr.push(InputVal);
$(".allName").html('');
$(".input-name").val('');
for(var i = 0; i < arr.length; i++) {
$(".allName").append('<li><span>' + arr[i] + '</span><i>X</i></li>')
}
}
} else {
alert('名字不能为空');
}
});
//删除名字
$(".allName").on('click', 'li i', function() {
$(this).parent('li').remove();
for(var i = 0; i < arr.length; i++) {
if(arr[i] == $(this).parent('li').find('span').html()) {
arr.splice(i, 1); //从下标为i的元素开始，连续删除1个元素
i--; //因为删除下标为i的元素后，该位置又被新的元素所占据，所以要重新检测该位置
}
}
})
//开始随机按钮
$(".startBtn").click(function() {
if(arr.length != 0) {
if(falg) {
stime = setInterval(function(){
var randomName = arr[Math.floor(Math.random() * arr.length)]; //这个是核心
$(".spotName").html(randomName);
}, 10)
$(this).html('结束');
falg = false;
} else {
clearInterval(stime);
stime = null;
$(this).html('开始');
falg = true;
}
} else {
alert('请输入名字');
}
})
})
</script>
</body>
</html>