Supposte to have an object:
var obj = { 'home':1, 'dog':1, 'house':3 }
and suppose to have a variable
var variable='home';
(I don't know if it is possibile)
Now I need access to object in this way obj.variable so variable=home and it seems to do obj.home. I can do something like this? Anyone can help me?
Try this obj[variable] to access value in json object.
Quite easy:
var obj = {'home':1,'dog':1,'house'};
var variable = 'home';
obj[variable] // prints 1
It's called property accessor.
You can access object properties with 2 ways:
. notation.[] notation.If your object property names are of reserved words or contain empty space, then you can't use . to access them. The only way to access them is [].
So you can access your object property as follows:
obj[variable] = 10 // or whatever value you wants to assign to this variable
Setting up the Object:
// Setting up Object
var obj = {
home: 1,
dog: 1,
house: "big"
}
// Accesing object
var home = obj.home;
or if you are dynamically generating go with:
// Setting up Object
var obj = {
'home': '1',
'dog': '1',
'house': 'big'
}
// Accesing object
var home = obj["home"];
You can access it using bracket notation like this obj[variable] which has the benefit that the string does not have to be a valid identifier; it can have any value, e.g. "1foo", "!bar!", or even " " (a space).
You can use obj[variable] like so:
var obj={'home':1,'dog':1,'house':5};
var variable='home';
obj[variable];
obj[variable]