您好,登录后才能下订单哦!
密码登录
登录注册
点击 登录注册 即表示同意《亿速云用户服务条款》
本文实例为大家分享了js实现抽奖系统功能的具体代码,供大家参考,具体内容如下
要求实现功能:
1.点击左侧按键,开始抽奖,点击右侧按键,停止抽奖;
2.敲击回车键,开始抽奖,再次敲击回车键,停止抽奖;
3.开始抽奖后,左侧按钮变色;
html:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>抽奖</title> <link rel="stylesheet" href="style.css"> <script src="eventUtil.js"></script> <script src="js.js"></script> </head> <body> <div class="box"> <div id="header">开始抽奖啦!</div> <div id="btn"> <span id="start">开始</span> <span id="stop">结束</span> </div> </div> </body> </html>
css:
body{ margin: 0; padding: 0; } .box{ width: 400px; height: 200px; border: 1px solid #0C4E7C; margin: 0 auto; } #header{ color:darkred; font-size: 24px; text-align: center; width: 400px; height: 60px; line-height: 60px; } #btn{ width: 200px; overflow: hidden; margin: 30px auto 0; } #btn span{ cursor: pointer; border: 2px solid #a09a09; border-radius: 7px; margin-right: 10px; color: #000; display: inline-block; height: 40px; width: 80px; background-color: #f2ec55; line-height: 40px; text-align: center; }
JavaScript:
js.js: var date = ["谢谢参与", "谢谢参与", "谢谢参与", "50元话费", "ipad", "佳能相机", "苹果手机", "3DS", "switch", "1000元超市购物卡"]; var timer = null; var flag = 0; window.onload = function () { // var header = document.getElementById("header");优化前 var start = document.getElementById("start"); var stop = document.getElementById("stop"); //鼠标抽奖 eventUtil.addHandler(start, "click", getStart); eventUtil.addHandler(stop, "click", getStop); //键盘抽奖; document.onkeyup = function (event) { var e = event || window.event; //检测按键键值; // console.log(e.keyCode); if (e.keyCode === 13) { if (flag === 0) { getStart(); flag = 1; } else { getStop(); flag = 0; } } }; function getStart() { clearInterval(timer); var header = document.getElementById("header");//优化后 timer = setInterval(function () { //代码优化前 //var x = parseInt(Math.random()*10); var random = Math.floor(Math.random() * date.length); header.innerHTML = date[random]; }, 50); start.style.backgroundColor = "#999"; flag = 1; } function getStop() { clearInterval(timer); start.style.backgroundColor = "#f2ec55"; flag = 0; } };
eventUtil.js
var eventUtil = { getEvent:function (event) { return event?event:window.event; }, getType: function (event) { return event.type; }, getTarget:function (event) { return event.target||event.srcElement; }, //阻止冒泡 stopPropagation:function (event) { if(event.stopPropagation){ event.stopPropagation(); }else { event.cancelBubble=true; } }, //阻止事件默认行为; preventDefault:function(event){ if(event.preventDefault){ event.preventDefault(); }else { event.returnValue = false; } }, //添加具柄; addHandler: function (element, type, Handler) { if (element.ç) { element.addEventListener(type, Handler, false); } else if (element.attachEvent) { element.attachEvent("on" + type, Handler); } else { element["on" + type] = Handler; } }, //删除具柄; removeHandler: function (element, type, Handler) { if (element.removeEventListener) { element.removeEventListener(type, Handler, false); } else if (element.detachEvent) { element.detachEvent("on" + type, Handler); } else { element["on" + type] = null; } } };
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亿速云。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。