小编Pir*_*aTa的帖子

我刚刚开始学习面向对象编程的概念,并且我已经用函数编写了这个类.

它工作正常,但我很想知道我是否正确地做到了这一点......

这是我的代码:

class Database{
    const DB_HOSTNAME = 'localhost';
    const DB_USERNAME = 'root';
    const DB_PASSWORD = 'password';
    const DB_NAME = 'shop';
    protected $_db_connect;
    protected $_sql;
    protected $_result;
    protected $_row;

    function db_connect(){
        $this->_db_connect = mysql_connect(self::DB_HOSTNAME,self::DB_USERNAME,self::DB_PASSWORD) or die(mysql_error());
    }

    function slect_db(){
        mysql_select_db(self::DB_NAME) or die(mysql_error());
    }

    function sql(){
        $this->_sql = 'SELECT * FROM users';
    }

    function query(){
        $this->_result = mysql_query($this->_sql);
    }

    function fetch_array(){
        while($this->_row = mysql_fetch_array($this->_result)){
            $username = $this->_row['user_USERNAME'];

            echo "<ul>";
                echo "<li>".$username."</li>";
            echo "</ul>";
        }
    }

    function db_close(){
        mysql_close($this->_db_connect);
    }
}

$database …

HTML:

<div class="regform"><input id="username" type="text" name="username" placeholder="Username" required><h3 class="check"><img src=''/></h3></div>
<div class="regform"><input id="password" type="password" name="password" placeholder="Password" required><h3 class="check"><img src=''/></h3></div>
<div class="regform"><input id="password2" type="password" name="password2" placeholder="Re password" required><h3 class="check"><img src=''/></h3></div>
<div class="regform"><input id="email" type="text" name="email" placeholder="E-mail" required><h3 class="check"><img src=''/></h3></div>

JS:

        $('#send').click(function(){
    var classs = $(".check").find('img');
    if(classs.hasClass("yes")){
        alert("Everything is correct");
    }else{
        alert("Something is wrong");
    }

});

我想检查,如果所有".check"图像都有"是"类.

我有这样的JSON数组:

[{"BMW": [], "OPEL": [], "Mercedes": []}]

而且我想得到

[{"Mercedes": [], "OPEL": [], "BMW": []}]

我怎么能这样做？