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Remove null from an Array with Lodash
source link: https://masteringjs.io/tutorials/lodash/remove-null-from-array
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Remove null from an Array with Lodash
Jun 26, 2022
To remove a null from an array, you should use lodash's filter function.
It takes two arguments:
collection: the object or array to iterate over.predicate: the function invoked per iteration.
The filter() function returns a new array containing all elements predicate returned a truthy value for.
To remove null, you can call filter() with v => v !== null as the predicate.
const _ = require('lodash');
const arr = ['a', true, null, undefined, 42];
_.filter(arr, v => v !== null); // ['a', true, undefined, 42]To remove null using filter, you can use the _.isNull function as the predicate.
Simply add a negate in front of the isNull and all null values will be filtered out.
const _ = require('lodash');
const array = ['a', true, null, undefined, 42]; // ['a', true, undefined, 42]
_.filter(array, el => !_.isNull(el));
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