How can I check if all elements of an array are truthy or falsey.

Since the following doesn't seem to do it: _.all([true, true, true], true);

it returns: false?

How can I check if all elements of an array are truthy or falsey.

Since the following doesn't seem to do it: _.all([true, true, true], true);

it returns: false?

• javascript
• lodash

Share Improve this question Follow asked Jun 17, 2015 at 19:26 Victor SVictor S 5,13255 gold badges4646 silver badges6363 bronze badges 2

• 5 lodash.com/docs#every suggests you are not using this function correctly (to start off, it's no longer _.all) – Mike 'Pomax' Kamermans Commented Jun 17, 2015 at 19:29
• 1 _.every([true, true, true]); Should work. – Bastian Hofmann Commented Jun 17, 2015 at 19:33

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1 Answer 1

Sorted by: Reset to default 36

You should re-read the _.every(collection, [predicate=_.identity]) api doc of lodash. The issue with your code is the second param you are passing. Remove it and it works

> _.every([true, 'foo', 1])
true
> _.every([true, 'foo', 1, 0])
false