javascript-lodashHow do I use Lodash to deep merge two JavaScript objects?

Lodash is a JavaScript library that provides utility functions for common programming tasks. One of the functions it provides is _.merge() which can be used to deep merge two JavaScript objects. The _.merge() function takes two objects as arguments and returns a new object that is the result of merging the two objects.

Example code

const obj1 = {
  a: 1,
  b: 2,
  c: {
    d: 3,
    e: 4
  }
};

const obj2 = {
  b: 3,
  c: {
    f: 5
  }
};

const mergedObj = _.merge(obj1, obj2);

console.log(mergedObj);

Output example

{
  a: 1,
  b: 3,
  c: {
    d: 3,
    e: 4,
    f: 5
  }
}

• _.merge(): function provided by Lodash to deep merge two JavaScript objects.
• obj1: first object to be merged.
• obj2: second object to be merged.
• mergedObj: new object created by merging obj1 and obj2.

Helpful links

• Lodash Documentation
• GitHub Repository

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