Is it possible to define a "path" to an object key?
For instance if you have an object:
var obj = {
hello: {
you: "you"
}
}
I would like to select it like this:
var path = "hello.you";
obj[path]; //Should return "you"
(Doesn't work obviously, but is there a way?)
Quick code, you probably should make it error proof ;-)
var obj = {
hello: {
you: "you"
}
};
Object.prototype.getByPath = function (key) {
var keys = key.split('.'),
obj = this;
for (var i = 0; i < keys.length; i++) {
obj = obj[keys[i]];
}
return obj;
};
console.log(obj.getByPath('hello.you'));
And here you can test -> http://jsbin.com/ehayav/2/
mz
You can try this:
var path = "hello.you";
eval("obj."+path);
You can't do that but you can write function that will traverse nested object
function get(object, path) {
path = path.split('.');
var step;
while (step = path.shift()) {
object = object[step];
}
return object;
}
get(obj, 'hello.you');
paththen you can useeval("obj." + path);.