如何从 JavaScript 中的关联数组中删除对象？

创建一个包含键值对的关联数组，任务是使用 JavaScript 从关联数组中删除对象。我们可以使用delete关键字从 JavaScript 关联数组中删除对象。

方法：声明一个包含键值对对象的关联数组。然后使用 delete 关键字从关联数组中删除数组对象。

示例 1：此示例使用 delete 关键字从关联数组中删除对象。

  

    
        How to remove Objects from
        Associative Array in JavaScript ?
    

  

      
    
        GeeksforGeeks
    
      
    
        How to remove Objects from
        Associative Array in JavaScript ?
    
      
    
      
        // JavaScript code to remove
        // objects from associative array
        function deleteObjects(){
              
            // Declaring an associative 
            // array of objects
            var arr = new Object();
                  
            // Adding objects in array
            arr['key'] = 'Value';
            arr['geeks'] = 'GeeksforGeeks';
            arr['name'] = 'Rajnish';
                  
            // Checking object exist or not
            document.write(arr['name'] + '</br>');
                  
            // Removing object from
            // associative array
            delete arr['name'];
                  
            // It gives result as undefined
            // as object is deleted
            document.write(arr['name'] + '</br>');
        }
              
        // Calling function
        deleteObjects();
    

  

输出：

示例 2：此示例使用 delete 关键字从关联数组中删除对象。

  

    
        How to remove Objects from
        Associative Array in JavaScript ?
    

  

      
    
        GeeksforGeeks
    
      
    
        How to remove Objects from
        Associative Array in JavaScript ?
    
      
    
  
        // JavaScript code to remove
        // objects from associative array
        function deleteObjects(){
              
            // Declaring an associative 
            // array of objects
            var arr = new Object();
                   
            // Adding objects in array
            arr['key'] = 'Value';
            arr['geeks'] = 'GeeksforGeeks';
            arr['name'] = 'Rajnish';
                   
            // Checking object exist or not
            document.write(arr['geeks'] + '</br>');
                   
            // Removing object from
            // associative array
            delete arr.geeks;
                   
            // It gives result as undefined
            // as object is deleted
            document.write(arr['geeks'] + '</br>');
        }
               
        // Calling function
        deleteObjects();
    

  

输出：