js写彩票的全选，清空，奇数，偶数，大小怎么写的？

JavaScript09

js写彩票的全选，清空，奇数，偶数，大小怎么写的？,第1张

就是个元素选择 点击触发按钮 全选$('x').attr('checked', 'checked')奇数$('x:nth-child(n+1)')偶数$('x:nth-child(n+2)') 情空$('x').attr('checked', '')就那么个意思 错了别怪我

将就看下吧

<!DOCTYPE html>

<html lang="en">

<head>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1.0">

<title>Document</title>

</head>

<body>

<button id="buySelef">买一张(自选)</button>

<button id="buyRandom">买一张(机选)</button>

<button id="result">买一张(开奖)</button>

<div id='resultList'>

<span>结果</span>

</div>

</body>

</html>

<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>

<script>

window.Prize={LotteryResults:0 }

$("#buySelef").click(function(){

var num = Math.floor(Math.random() * (300 - 100) ) + 100

$("#resultList").append('<p>自选结果：'+num+'<p>')

})

$("#buyRandom").click(function(){

var num = Math.floor(Math.random() * (300 - 100) ) + 100

$("#resultList").append('<p>机选结果：'+num+'<p>')

})

$("#result").click(function(){

if(window.Prize.LotteryResults<=0)

{

var num = Math.floor(Math.random() * (300 - 100) ) + 100

window.Prize.LotteryResults=num

}

else{

var num = window.Prize.LotteryResults

}

$("#result").append('<p>开奖结果：'+num+'<p>')

})

</script>