通过写一个newarr()方法加了一个判断
function newarr(){
alert(val)
names = jQuery.grep(names, function( a ) {return a !== val;});
a1 = jQuery.grep(a1, function( a ) {return a !== val;});
a2 = jQuery.grep(a2, function( a ) {return a !== val;});
a3 = jQuery.grep(a3, function( a ) {return a !== val;});
a4 = jQuery.grep(a4, function( a ) {return a !== val;});
}
代码如下：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>jQuery随机点餐小程序 - 源码之家</title> </head> <style> body { background: #ef4009c2 } .main { width: 660px; height: 760px; margin: 80px auto; } .button { height: 100px; color: #fff; font-weight: bold; font-size: 58px; position: relative; top: 210px; text-align: center; cursor: pointer; } .name { position: relative; top: 300px; height: 100px; color: #9fc; font-weight: bold; font-size: 58px; text-align: center; } ul li { display: inline; list-style: none; line-height: 30px; } .types { margin: 0 20px; color: #ffffff; font-weight: bold; font-size: 30px; text-align: center; cursor: pointer; height: 150px; line-height: 150px; } .checked { background: cornflowerblue; padding: 20px; } .tips { text-align: center; color: #ffffff; line-height: 50px; font-size: 30px; margin-top: 200px; } </style> <script src="../js/jquery.js"></script> <script src="../js/jquery-migrate-1.2.1.min.js"></script> <body> <div class="main"> <ul> <li class="types all" data-index="0">全部</li> <li class="types aa" data-index="1">简餐</li> <li class="types bb" data-index="2">饮品</li> <li class="types cc" data-index="3">麻辣鲜香</li> <li class="types dd" data-index="4">甜点</li> </ul> <div class="button"><span>开始</span></div> <div class="name"><span id='ko'>随机名称</span></div> </div> <div class="tips">如果您点击超过十次还没有选到满意的菜单，也许在你心里面早已有答案。遵循自己的内心吧~！</div> <script> a1 = ['烩面', '麻辣烫', '酸辣粉', '食堂', '煲仔饭', '鱼香肉丝盖饭', '鸡公煲', '热干面', '蒸饺+混沌', '土豆粉', '拌面', '汉堡+炸鸡', '烩菜', '羊肉泡馍', '煎饼果子', '螺蛳粉', '米线', '肠粉', '凉皮', '擀面皮', '爆肚', '肉夹馍', '炒饭', '饭团', '卤肉饭', '渔粉', '焖面', '煎包', '粥+包子'] a2 = ['烧仙草', '普通奶茶', '芬达', '酸奶', '凉白开', '柠檬水', '可乐'] a3 = ['小龙虾', '火锅', '串串', '大盘鸡', '冰雪俏鸭头', '麻辣烫', '冒菜', '麻辣香锅', '烤鱼', '大虾', '肉蟹煲', '寿司', '自助烤肉', '自助海鲜', '自助牛排'] a4 = ['蛋糕', '千层', '面包', '蛋挞', '泡芙', '马卡龙', '布丁', '鸡蛋仔', '冰激凌', '炒酸奶', '芋圆'] names = ['烩面', '棉花糖', '重庆火锅', '串串', '麻辣烫', '奶茶', '酸辣粉', '食堂', '鸡蛋仔', '煲仔饭', '鱼香肉丝盖饭', '鸡公煲', '热干面', '蒸饺+混沌', '土豆粉', '自助火锅', '拌面', '披萨', '芬达', '汉堡+炸鸡', '烩菜', '羊肉泡馍', '煎饼果子', '猪蹄', '麻辣小龙虾']; var ele = 0; function getType() { var type = document.querySelectorAll('.types'); for (var i = 0; i < type.length; i++) { type[i].onmouseover = function () { for (var j = 0; j < type.length; j++) { type[j].className = 'types'; } this.className = 'types checked'; } // type[i].onmouseout = function () { // for (var j = 0; j < type.length; j++) { // type[j].className = 'types'; // } // } type[i].onclick = function () { ele = this.getAttribute('data-index'); } } } $('.button').toggle( function () { $(this).css({'color': '#f00'}).html('停止'); ydm = setInterval(function () { // console.log(ele) switch (ele) { case '0' : index = Math.floor(Math.random() * names.length); val = names[index]; $('#ko').css({'color': '#33FFFF'}).html(val); break; case '1' : index = Math.floor(Math.random() * a1.length); val = a1[index]; $('#ko').css({'color': '#33FFFF'}).html(val); break; case '2' : index = Math.floor(Math.random() * a2.length); val = a2[index]; $('#ko').css({'color': '#33FFFF'}).html(val); break; case '3' : index = Math.floor(Math.random() * a3.length); val = a3[index]; $('#ko').css({'color': '#33FFFF'}).html(val); break; case '4' : index = Math.floor(Math.random() * a4.length); val = a4[index]; $('#ko').css({'color': '#33FFFF'}).html(val); break; } ; }, 50) }, function () { $(this).css({'color': '#fff'}).html('开始'); $('#ko').css({'color': '#00CC00'}); // 停止执行事件ydm clearInterval(ydm); newarr() } ); function newarr() { alert(val) names = jQuery.grep(names, function (a) { return a !== val; }); a1 = jQuery.grep(a1, function (a) { return a !== val; }); a2 = jQuery.grep(a2, function (a) { return a !== val; }); a3 = jQuery.grep(a3, function (a) { return a !== val; }); a4 = jQuery.grep(a4, function (a) { return a !== val; }); } $(function () { getType(); }) </script> <div style="text-align:center;"> <p>更多源码：<a href="http://www.mycodes.net/" target="_blank">源码之家</a></p> </div> </body> </html>