What I am doing wrong here? I am getting TypeError: items[i] is undefined as the error.
var items = [];
for(var i = 1; i <= 3; i++){
items[i].push('a', 'b', 'c');
}
console.log(items);
I need an output as given below,
[
['a', 'b', 'c'],
['a', 'b', 'c'],
['a', 'b', 'c']
]
You could simply use the following:
items.push(['a', 'b', 'c']);
No need to access the array using the index, just push another array in.
The .push() method will automatically add it to the end of the array.
var items = [];
for(var i = 1; i <= 3; i++){
items.push(['a', 'b', 'c']);
}
console.log(items);
As a side note, it's worth pointing out that the following would have worked:
var items = [];
for(var i = 1; i <= 3; i++){
items[i] = []; // Define the array so that you aren't pushing to an undefined object.
items[i].push('a', 'b', 'c');
}
console.log(items);
.push() method will automatically append the items to the end of the array. On each iteration, you were trying to access a value that didn't exist in the array. See the update.