This is my object :
Customer{"id": "0001", "name": "ivan" , "country" {"city" : "Peru"}}
So: Whats the correct form to use brakets? the context is in a jquery each:
$. each (datos, function (index, data) { }
1° data["country"["city"]] >> the result should be "Peru"
2° data["country"]["city"] >> the result should be "Peru"
or whats is the form correct?
I belive you are saying that your object is :
Customer = {
id: "0001",
name: "ivan",
country: {
city : "Peru"
}
}
In this case your syntax would be either
Customer.country.city
or
Customer["country"]["city"]
or any mix of this two
Note also that Customer[country[something]] can also be valid syntax, but doesnt seem to be in your case
Customer = {
id: "0001",
name: "ivan",
country: {
city : "Peru"
}
}
country = {
key: 'country'
}
Customer[country['key']]['city']
would also return you city Peru
This is not an JavaScript object:
Customer[id: "0001"; name: "ivan" ; country [city : "Peru"]]
This is an object in JavaScript object:
var customer = {
id: "0001",
name: "ivan",
country: {
finland: {
city: "Helsinki"
}
}
};
You would use it with this:
console.log(customer.country.finland.city);
or this:
console.log(customer['country']['finland']['city']);
or with mixing....
console.log(customer['country'].finland.city);
..and yes took a freedom of adding actual country, not just city but I guess this post demonstrates the point, you can either retrieve values with dot notation customer.country.finland or apostrophes customer['country']['finland'] .. However, if you are using numbers as JavaScript object key like this:
var customer = {
1: "Mauno"
};
You can retrieve it only using apostrophes as: customer['1'] trying to use it like customer.1 will result in a JavaScript error.
Object == {} && Array == []. Use a proper syntax.[]are used to retrieve a value from an array or object at a particular index. The index is the value within the brackets.