Lodash _.range() method is used to create an array of numbers progressing from the given start value up to, but not including the end value. A step of -1 is used if a negative value of start is specified without an end or step. If the end is not specified, it’s set to start with the start and then set to 0.
Syntax:
_.range([start=0], end, [step=1]);
Parameters:
- start: It is a number that specifies the start of the range. It is an optional value. The default value is 0.
- end: It is a number that specifies the end of the range.
- step: It is a number that specifies the amount that the value in the range is incremented or decremented. The default value is 1.
Return Value:
It returns an array with the given range of numbers.
Example 1: In this example, we are printing 5 values in the console as we are passing 5 as an end parameter to the _.range() method.
Javascript
// Requiring the lodash library const _ = require("lodash"); // Using the _.range() method let range_arr = _.range(5); // Printing the output console.log(range_arr); |
Output:
[0, 1, 2, 3, 4]
Example 2: In this example, we are passing 0 as a start, 10 as an end and 2 as step and passing these parameter to the _.range() method.
Javascript
// Requiring the lodash library const _ = require("lodash");// Using the _.range() method// with the step taken as 2let range_arr = _.range(0, 10, 2);// Printing the output console.log(range_arr); |
Output:
[0, 2, 4, 6, 8]
Example 3: In this example, we are passing -1 as a start, -11 as an end and -2 as step and passing these parameter to the _.range() method.
Javascript
// Requiring the lodash library const _ = require("lodash");// Using the _.range() method// with the step taken as -2let range_arr = _.range(-1, -11, -2);// Printing the output console.log(range_arr); |
Output:
[-1, -3, -5, -7, -9]
