Tell us what’s happening:
What I’m doing wrong here?
Your code so far
function nonMutatingSplice(cities) {
// Add your code below this line
var x = cities.slice(3,4);
return x;
// Add your code above this line
}
var inputCities = ["Chicago", "Delhi", "Islamabad", "London", "Berlin"];
nonMutatingSplice(inputCities);
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.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/functional-programming/remove-elements-from-an-array-using-slice-instead-of-splice
It should start at 0 index. and then end after 3 items are added.
So i should write var x= cities.slice(0,3);
right?
1 Like
The goal is to have your function ouput be
["Chicago", "Delhi", "Islamabad"]
Using your current code, it is:
["London"]
Let’s say we were changing your slice to the following:
Cities.slice(0,4);
the output will be:
["Chicago","Delhi","Islamabad","London"]
But we only want the first 3 cities.
i rite that but tell me arr is not defined
This should work.
just add return x at end.
arr just means what ever array you have, in this case it would be ‘cities’
so… cities.slice(0,3);
var x= cities.slice(0,3);
return x
function nonMutatingSplice(cities) {
// Add your code below this line
return cities.slice(nonMutatingSplice, 3);
// Add your code above this line
}
var inputCities = [“Chicago”, “Delhi”, “Islamabad”, “London”, “Berlin”];
nonMutatingSplice(inputCities);