使用Javascript对象文字:

Use a Javascript object literal:

var obj = {
    a: 1,
    b: 2,
    c: 'hello'
};

然后您可以像这样遍历它:

You can then traverse it like this:

for (var key in obj){
    console.log(key, obj[key]);
}

然后访问对象的属性，如下所示:

And access properties on the object like this:

console.log(obj.a, obj.c);