在普通对象的键中连接字符串

So I have this plain object

所以我有这个普通的对象

var data = {};

And i want to fill it with key-value pairs in a for loop like this

我想在这样的for循环中用键值对填充它

for(var i=0; i<n; i++){
    $.extend(
        data,
        {
            'a'+toString(i): someFunction(i),
            'b'+toString(i): someFunction(i)
        };
    );
};

but seems like it's impossible to concatenate strings when defining the key. Is there any neat way to do what I need, because I feel like my approach is lame from the very begining.

但似乎在定义密钥时不可能连接字符串。有什么方法可以做我需要的东西，因为我觉得我的方法从一开始就很蹩脚。

Thanks.

谢谢。

2 个解决方案

#1

You need to use bracket notation as the member operator since the keys are dynamic

您需要使用括号表示法作为成员运算符，因为键是动态的

for (var i = 0; i < n; i++) {
    data['a' + toString(i)] = someFunction(i);
    data['b' + toString(i)] = someFunction(i);
}

#2

Use this syntax

使用此语法

for ( var i = 0; i < n; i++ ) {
    data['a'+toString(i)] = someFunction(i);
}

To use a non-literal key with an object you need to use the square bracket notation. This allows you to create dynamic keys.

要将非文字键与对象一起使用，您需要使用方括号表示法。这允许您创建动态密钥。

Have a look here for more info on square bracket notation

有关方括号表示法的更多信息，请查看此处

#1