我有一个像这样的对象作为JSON响应从服务器返回:
{
"0": "1",
"1": "2",
"2": "3",
"3": "4"
}
I want to convert it into a JavaScript array like this:
["1","2","3","4"]
Is there a best way to do this? Wherever I am reading, people are using complex logic using loops. So are there alternative methods to doing this?
实际上，jQuery的$.map非常直截了当
var arr = $.map(obj, function(el) { return el });
在没有jQuery的情况下，将键转换为数组，然后将值映射回Array.map也几乎同样简单
var arr = Object.keys(obj).map(function(k) { return obj[k] });
假设它已经被解析为javascript对象，而不是实际上的JSON，这是一种字符串格式，在这种情况下，还需要遍历JSON.parse.
In ES2015 there's Object.values to the rescue, which makes this a breeze
var arr = Object.values(obj);