感觉很差劲的点菜

html+jq+css

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <style>
        .header{
            width:80%;
            height:80px;
            min-width: 505px;
            margin:0 auto;
            text-align: center;
        }
        .header input{
            height: 60px;
            width: 400px;
            border: 1px solid #ccc;
            box-sizing: border-box;
            vertical-align: middle;
            outline: none;
            text-indent: 30px;
            font-size: 20px;
        }
        .header button{
            background-color: gold;
            width: 100px;
            height: 60px;
            line-height: 60px;
            color: #FFF;
            border: 1px solid #ccc;
            vertical-align: middle;
            outline: none;
        }
        .list{
            width: 80%;
            min-height: 505px;
            background-color: beige;
            margin:0 auto;
        }
        .list span{
            display: inline-block;
            background-color: aquamarine;
            color: #333;
            padding:10px 20px;
            border-radius:5px;
            margin: 20px;
            cursor: pointer;
        }
    </style>
    <title></title>
</head>
<body>
    <div class="header">
        <input type="text" name="number"><button>随机产生</button>
    </div>
    <div class="list">
    </div>
    <script>
    $(function(){
        $('button').click(function(){
            $('.list').on('click','span',function(){
                $(this).css({"backgroundColor":"#cccccc";}) 
            });
            //get请求
            $.get('create.php',{num:$('input').val()},function(e){
                $('.list').html('');
                for(var i=0;i<e.length;i++){
                    $('<span>'+e[i]+'</span>').appendTo($('.list'));
                }
            },'json')
        });
    })
    </script>
</html>

php

<?php
$num = (int)$_GET['num'];
//至少产生1名
if($num<=0){
    $re= [
        'code' => 1001,
        'message'=>'至少产生一道菜'
    ];
    echo json_encode($re);
    die;
}
//所有的菜
$stu_arr = explode('|',file_get_contents('stu.txt'));
$arr = [];  //
for($i=0;$i<$num;$i++){ //用于循环产生菜名
    $stu_num = mt_rand(0,18); //随机产生菜名
    while(in_array($stu_num,$arr)){ 
        $stu_num = mt_rand(0,17);
    }
    array_push($arr,$stu_num);
}
$re = []; //返回的学生数组
foreach($arr as $k){
    array_push($re,$stu_arr[$k]);
}
$caidan =$stu_arr[$k]."|";
file_put_contents('caidan.txt',$caidan,FILE_APPEND);
//保存数据库
echo json_encode($re);

运行结果

点菜.png

最后编辑于：2020.05.18 22:21:33