如何更新JSON陣列，動態密鑰

Question

我想更新與陣列的動態對象我怎麼能做到這一點

var groupData = [ 
    { 
    "Logon": 0, 
    "Logon": 1 
    }, { 
    "Logoff": 0 
    }, { 
    "Special Logon": 0 
    }, { 
    "Other System Events": 0 
    }, { 
    "System Integrity": 0 
    }, { 
    "Other Logon/Logoff Events": 0 
    }, { 
    "Security State Change": 0 
    }, { 
    "Audit Policy Change": 0 
    }, { 
    "Security Group Management": 0 
    } 
]; 

var key = logon; 
var val = 10; 
groupData[0].key = val; 

Answer 1

您需要根據您的需要內部key值使用[]符號現有密鑰而不是key本身：

groupData[0][key] = val; 

注：

Object[key]; // Value of key index in Object. 
Object.key; // "key" index in Object. 

而且，看起來你需要更換：

var key = "Logon"; 

Answer 2

嘗試以下操作：

var key = logon; 
var val = 10; 
groupData[0].key = val; 

到

var key = "Logon"; 
var val = 10; 
groupData[0][key] = val; 

Answer 3

我想你的意思是這

key = 'Logon'; 
val = 10; 
groupData[0][key] = val; 

Answer 4

你可以試試下面：

var key = 'Logon'; 
var val = 10; 
groupData[0][key] = val;