CODEWITHSUNDEEP
javascriptarraysfunctionforeach
tgreen
tgreen

Reputation: 1926

Call a function in an array foreach loop with nested data

The following obviously doesn't work but it is the goal I am trying to reach:

items.forEach(addData(item.data));

I know I can do:

items.forEach(function(item){
    addData(item.data)
});

but I was wondering if there was a shorthand / cooler way of doing this.

edit:

I am also calling the same add data function with an array of items that aren't nested like so:

items.forEach(addItemId)

Which is why I was trying to find a way to use the same function (in a similar) fashion for the nested object.

Upvotes: 4

Views: 2091

Answers (3)

tengbretson
tengbretson

Reputation: 169

I don't necessarily recommend doing this in production code, but you can accomplish something like this with a little combinator:

const map_into = k => fn => o => fn(o[k]);

items.forEach(map_into('data')(addData));

Upvotes: 0

Sterling Archer
Sterling Archer

Reputation: 22405

Use an ES6 feature: Lambdas.

items.forEach(item => addData(item.data));

I'm trying to find a way to use .bind here, but to be honest, this is a pretty clean way. One liner, shorthand for function() { }.

Upvotes: 1

Mathew Berg
Mathew Berg

Reputation: 28750

If you can update your function to use item instead of item.data you could do this:

items.forEach(addData);

This will call addData with each item, not item.data though

Upvotes: 0

Related Questions