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jquery——九宫格大转盘抽奖实例
简介一、用到的图片二、代码如下，重点是js部分jQuery九宫格大转盘抽奖</title</div>
<div class="news_infos"><div id="MyContent"><p><strong> 一、用到的图片</strong></p>
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/201701160959095.jpg');"><img src="/UploadFiles/2021-04-02/201701160959095.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('//img.jbzj.com/file_images/article/201701/201701160959096.jpg');"><img src="//img.jbzj.com/file_images/article/201701/201701160959096.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/201701160959097.jpg');"><img src="/UploadFiles/2021-04-02/201701160959097.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('//img.jbzj.com/file_images/article/201701/201701160959098.jpg');"><img src="//img.jbzj.com/file_images/article/201701/201701160959098.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/201701160959099.jpg');"><img src="/UploadFiles/2021-04-02/201701160959099.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('//img.jbzj.com/file_images/article/201701/2017011609590910.jpg');"><img src="//img.jbzj.com/file_images/article/201701/2017011609590910.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017011609590911.jpg');"><img src="/UploadFiles/2021-04-02/2017011609590911.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('//img.jbzj.com/file_images/article/201701/2017011609590912.jpg');"><img src="//img.jbzj.com/file_images/article/201701/2017011609590912.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017011609590913.jpg');"><img src="/UploadFiles/2021-04-02/2017011609590913.jpg" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
<p><strong>二、代码如下，重点是js部分</strong></p>
<div class="htmlcode">
<pre class="brush:js;">
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery九宫格大转盘抽奖</title>
<style>
#lottery{width:570px;height:510px;margin:0px auto;border:4px solid #ba1809;}
#lottery table{background-color:yellow;}
#lottery table td{position:relative;width:190px;height:170px;text-align:center;color:#333;font-index:-999}
#lottery table td img{display:block;width:190px;height:170px;}
#lottery table td a{width:190px;height:170px;display:block;text-decoration:none;background:url(images/lottery1.jpg) no-repeat top center;}
#lottery table td a:hover{background-image:url(images/lottery2.jpg);}
#lottery table td.active .mask{display:block;}
.mask{
width:100%;
height:100%;
position:absolute;
left:0;
top:0;
background:url(images/mask.png) no-repeat;
display:none;
}
</style>
</head>
<body class="keBody">
<!--效果html开始-->
<div id="lottery">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td class="lottery-unit lottery-unit-0"><img src="/UploadFiles/2021-04-02/gift0.jpg">
<p>效果如下：</p>
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-04-02/2017011609590916.gif');"><img src="/UploadFiles/2021-04-02/2017011609590916.gif" alt="jquery——九宫格大转盘抽奖实例" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
<p><strong>三、注意事项</strong></p>
<p>1、抽奖过程说明</p>
<p>上面只是前端展示的效果。中奖物品通过一个随机数生成。<br>
</p>
<div class="htmlcode">
<pre class="brush:js;">
var index = Math.random()*(lottery.count)|0;</pre>
</div>
<p>真正开发中中奖物品是通过向后端接口发送请求返回的。</p>
<div class="htmlcode">
<pre class="brush:js;">
$("#lottery a").click(function(){
var islogin=checkLogin();
if(islogin){//已登录用户才能去抽奖
if (click) {
return false;
}else{
//向后端接口发请求返回中奖结果
var geturl="http://xxxxxx"+username+"&token="+token;
$.ajax({
url:geturl,
type:"GET",
dataType:"json",
async:false,
success:function(data){
if(data.errorcode==0){
var rewardid=data["message"]["rewardid"];
var cardno=data["message"]["rewardCardNo"];
var passno=data["message"]["rewardCardPass"];
var prize=-1;
var content="";
if(rewardid=="iphone6"){
lottery.prize=0;
prize=0;
content="一部iphone6手机";
$("#content1").html(content);
}else if(rewardid=="PPTVKING"){
lottery.prize=1;
prize=1;
content="一部PPTV KING7s 3D影音手机";
$("#content1").html(content);
/*... */
}else if(rewardid=="legao"){
lottery.prize=5;
prize=5;
content="一份乐高的玩具";
$("#content1").html(content);
}
lottery.speed=100;
roll();
click=true;
return false;
}else{
/*错误处理*/
if(data.errorcode==3){
$("#novip").show();
}else{
$("#notime").show();
}
}
}/*function结束*/
});/*ajax结束*/
}/*else结束*/
}
});
</pre>
</div>
<p>2、兼容性说明</p>
<p>.mask开始如下，用的是rgba，但是IE8不兼容，改为使用png图片background:url(images/mask.png) no-repeat;<br>
</p>
<div class="htmlcode">
<pre class="brush:css;">
.mask {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
background-color: rgba(252,211,4,0.5);
display: none
}</pre>
</div>
<p>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p></div>
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