Javascript數組修改值

Question

我有一個數組如下。

var vehicle = new Array(); 
vehicle.push({ "name": "honda", "value": "civic" }); 
vehicle.push({ "name": "toyota", "value": "camry" }); 

我該如何修改這個數組來改變思域？

Answer 1

如果你不知道數組中的對象的位置，那麼你可以簡單地通過數組循環。找到該值後，將其替換並退出循環。如果數組中可能有多個「城市」值，則省略break;語句，循環會將「城市」的所有實例更改爲「一致」。

for(var a = 0, len = vehicle.length; a < len; a++) { 
    if(vehicle[a].value === "civic") { 
     vehicle[a].value = "accord"; 
     break; 
    } 
} 

Answer 2

試試這個

vehicle[0].value = 'accord'; 

而對於陣列完全

vehicle.map(function (vehicle) { 
    if (vehicle.value === 'civic') { 
     vehicle.value = 'accord'; 
    } 
}); 

Answer 3

嘗試vehicle[0].value = "accord"

Answer 4

只是這樣做：

vehicle[0].value = 'accord'; 

Answer 5

for (var i = 0, len = vehicle.length; i < len; i++) { 
    if (vehicle[i].value === "civic") { 
     vehicle[i].value = "accord"; 
    } 
} 

Answer 6

看到JS Fiddle

vehicle[0]['value']='accord';