Javascript数组修改值

Question

我有一个数组如下。

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

如何修改此数组以更改civic以符合？

Answer 1

试试这个

vehicle[0].value = 'accord';

完全是阵列

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

Answer 2

如果您不知道对象在数组中的位置，那么您可以简单地遍历数组。找到该值后，将其替换并退出循环。如果数组中可能有多个“civic”值，则省略break;语句，循环将把所有“civic”实例更改为“accord”。

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

Answer 3

尝试vehicle[0].value = "accord"

Answer 4

这样做：

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

请参阅JS Fiddle

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