从JSON创建javascript变量

Question

我有以下JSON对象：

我不确定如何在Javascript中将其解析为可用的变量。

使这一点变得棘手的一点是名称并不总是相同的。

materialid可以命名为othernameid。

标题可以命名为somethingelsetitle。

我需要能够动态地了解每个名称及其价值。

谢谢！

{  
   "3":[  
      {  
         "materialid":3,
         "title":"New Titlted Stuff",
         "description":"Description of Stuff",
         "datecreated":"05/09/2018",
         "keywords":"Keywords about stuff",
         "material":"7_html_logo.png"
      }
   ],
   "4":[  
      {  
         "materialid":4,
         "title":"ABC title",
         "description":"ABC desc",
         "datecreated":"05/23/2018",
         "keywords":"ABC Keywords",
         "material":"8_angular_logo.png"
      }
   ],
   "5":[  
      {  
         "materialid":5,
         "title":"4th try",
         "description":"describe 4th thing",
         "datecreated":"05/14/2018",
         "keywords":"4th thing keywords",
         "material":null
      }
   ]
}