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Lodash _.random


The lodash _.random method is a versatile utility function that generates a random number within a specified range using a variety of options. This method belongs to the popular JavaScript library called Lodash, which provides a set of efficient and modular utility functions that enhance the functionality of basic JavaScript objects.

The _.random method creates a random number between two values, which can be specified as its arguments. It accepts two required arguments, which are the minimum and maximum values of the range. For example, if you want to generate a random number between 1 and 10, you would call the _.random method with the arguments _.random(1, 10).

The _.random method can also receive a third optional argument that determines the precision of the result. This argument is called the floating-point precision and a decimal value indicates the level of accuracy required. The default value of this argument is 0, which means only integers will be generated. For instance, if you want to generate random numbers with one decimal point between 0 and 1, you would call the _.random method with _.random(0, 1, true).

Another option is to provide an object with certain properties instead of a list of arguments. The object's properties include the following parameters:

  1. 'min': The minimum inclusive integer boundary (default value: 0).
  2. 'max': The maximum inclusive integer boundary (default value: 1).
  3. 'floating': Boolean flag if a floating point result is needed (default value: false).

By using an object with properties, you can flexibly omit certain parameters, set a base min, and delineate whether floating point numbers are needed.

In summary, the lodash _.random method is a powerful utility function for generating random numbers within a specified range. It can help developers generate random numeric IDs, generate test data, or add some randomness to the application's output. Moreover, the method provides several flexible options, such as specifying the range of possible values, deciding the number's precision, or using an object with properties instead of multiple arguments.