javascript json 获取键名作为文本？

Question

提问by Hailwood

I would like to find out the key of a json value.

我想找出一个 json 值的键。

I am doing

我在做

for(var i in rows){
    for(var j in rows[i]){
        console.log('value: ', rows[i][j]);
    }
}

However I want to be able to do something like

但是我希望能够做类似的事情

for(var i in rows){
    for(var j in rows[i]){
        console.log('key: rows[i][j].key', 'value: ',rows[i][j]);
    }
}

or whatever so I can access the key.

或任何我可以访问密钥的东西。

Answer 1

When you use the syntax for(var i in rows) i is actually the key so you should be able to do:

当您使用 for(var i in rows) 的语法时，我实际上是关键，因此您应该能够执行以下操作：

console.log('key: ',j, ' value: ',rows[i][j]);