1.
Introduction
2.
Why This Function is Used
3.
Syntax, Parameter and Return Value
3.1.
Syntax:
3.2.
Parameters:
3.3.
Return Value:
4.
Examples
4.1.
4.2.
JavaScript
4.3.
Using in Calculations:
4.4.
JavaScript
4.5.
Chaining with Other Lodash Operations:
4.6.
JavaScript
4.7.
Incrementing Values:
4.8.
JavaScript
5.
5.1.
5.2.
How does _.add() handle non-numeric inputs?
5.3.
Can _.add() be used with large numbers or for financial calculations?
6.
Conclusion
Last Updated: Mar 27, 2024
Easy

Pallavi singh
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## Introduction

In programming, arithmetic operations are fundamental, and ensuring accuracy and readability in these operations is crucial. Lodash, a popular utility library, simplifies such tasks with methods like _.add().

This method provides a straightforward way to perform addition, enhancing the clarity and consistency of arithmetic operations within code.

## Why This Function is Used

The _.add() function is used to add two numbers. While JavaScript supports addition natively, using Lodash's _.add() can improve code readability, especially when used within a chain of Lodash operations. It also ensures consistent behavior and readability in cases where you're heavily relying on Lodash for various data manipulations.

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## Syntax, Parameter and Return Value

### Syntax:

``_.add(number, other)``

### Parameters:

• number (Number): The first number to add.

• other (Number): The second number to add.

### Return Value:

(Number) - Returns the sum of number and other.

## Examples

• JavaScript

### JavaScript

``var _ = require('lodash');console.log(_.add(6, 4)); ``

Output:

``10``

• JavaScript

### JavaScript

``var totalCost = _.add(100, 50); // Adding cost and shippingconsole.log(totalCost);``

Output:

``150``

Shows how _.add() can be used in a basic arithmetic calculation.

• JavaScript

### JavaScript

``var result = _([1, 2]).map(x => _.add(x, 10)).value();console.log(result); ``

Output:

`` [11, 12]``

An example of chaining _.add() with other Lodash methods for array manipulation.

• JavaScript

### JavaScript

``var scores = [8, 9, 10];var incrementedScores = scores.map(score => _.add(score, 1));console.log(incrementedScores); ``

Output:

`` [9, 10, 11]``

Demonstrates using _.add() to increment each value in an array.

For basic addition, native JavaScript operations are usually sufficient. _.add() is more about consistency in coding style, particularly in projects heavily utilizing Lodash.

### How does _.add() handle non-numeric inputs?

If non-numeric values are passed to _.add(), it may result in NaN (Not a Number), similar to JavaScript's native addition behavior with invalid inputs.

### Can _.add() be used with large numbers or for financial calculations?

_.add() can handle large numbers, but for high-precision financial calculations, specialized libraries designed for such tasks are recommended to avoid floating-point errors.

## Conclusion

Lodash's _.add() method offers a clear and concise way to perform addition operations within JavaScript. It aligns well with the Lodash ecosystem, providing a consistent approach to arithmetic alongside other data manipulation tasks.

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