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Lodash _.forEach() Method - GeeksforGeeks

Last Updated : 03 Sep, 2024

Lodash _.forEach() method iterates over elements of the collection and invokes iterate for each element.

_.forEach(collection, [iteratee = _.identity]);

• collection: This parameter holds the collection to iterate over.
• iteratee: It is the function that is invoked per iteration.

This method returns the collection. 

Example 1: In this example, we are iterating an array by the use of the _.forEach() method and printing the results in the console.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.forEach() method 
_.forEach(['c', 'cpp', 'java', 'python'], function (value) {
    console.log(value);
});

Output:

'c'
'cpp'
'java'
'python'

Example 2: In this example, we are iterating an object by the use of the _.forEach() method and printing the results in the console.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.forEach() method 
_.forEach({ 'x': 1, 'y': 2 }, function (value, key) {
    console.log(key);
});

Output:

'x'
'y'

Note: This will not work in normal JavaScript because it requires the library lodash to be installed. 

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