I need to write a function that takes in an object and returns an array with this object's property values.
Ex.:
var obj = {
name: "Joao",
age: 27,
country: "USA"
};
The function should return an array like this:
var array = ["John", 27, "USA"];
I can't use Object.values().
That's how my last attempt looks like:
function returnValues(obj) {
for (var key in obj) {
return obj[key];
}
It does not return an array with the values. Can anyone help me?
You could try using map:
var obj = {
name: "Joao",
age: 27,
country: "USA"
};
var array = Object.keys(obj).map(item => obj[item]);
console.log(array);You can either use Object.keys and iterate over that to return the values:
function returnValues(obj) {
return Object.keys(obj).map(function(key) {
return obj[key];
});
}
Or you can create a temp array using your existing solution:
function returnValues(obj) {
var temp = [];
for (var key in obj) {
temp.push(obj[key]);
}
return temp;
}
With ES6 support you can shorten to:
const returnValues = (o) => Object.keys(o).map(k => o[k]);
Or use Object.entries:
Object.entries(obj).map(([,v]) => v)
Or as @ibrahim mahrir points out, if you have ES2017 support you can use Object.values:
console.log(Object.values(obj));
Add it to an array and then return the array
function returnValues(obj) {
var arr = [];
for (var key in obj)
arr.push(obj[key]);
return arr;
}
You can also use Object.entries().
var obj = {name: "Joao", age: 27, country: "USA"},
elems = Object.entries(obj).map(v => v[1]);
console.log(elems);
I can't use Object.values().yes you can - developer.mozilla.org/en/docs/Web/JavaScript/Reference/…