Creates an array of numbers progressing from start up to, but not including, end — same as _.range, except values are populated in descending order. Part of Lodash Util since 4.0.0 (stable — not deprecated).
Pass the arguments shown below. Prefer modular imports when you only need this helper.
Call _.rangeRight. Start with this line.
_.rangeRight([start=0], end, [step=1])| Call | What it does |
|---|---|
_.rangeRight([start=0], end, [step=1]) | Primary signature. |
_.rangeRight(...) | Call the util helper. |
Prefer import rangeRight from "lodash/rangeRight" when you want a smaller bundle.
_.rangeRight([start=0], end, [step=1])| Parameter | Description |
|---|---|
| start | Optional. Start of the range (default 0) |
| end | Required. Exclusive end (*alone as one-arg form) |
| step | Optional. Increment (default 1; -1 if negative end without step) |
| Return Value | Description |
|---|---|
| * | Number array filled from the right |
End only — start defaults to 0, array filled from the right.
_.rangeRight(4);
// → [3, 2, 1, 0]
_.rangeRight(-4);
// → [-3, -2, -1, 0]_.range(4) → 0..3.[3, 2, 1, 0].−1 by default.[-3, -2, -1, 0] — reverse of _.range(-4).Exclusive end — stops before 5.
_.rangeRight(1, 5);
// → [4, 3, 2, 1]1, end 5 (not included).1, 2, 3, 4.[4, 3, 2, 1].Step of 5 from 0 toward 20.
_.rangeRight(0, 20, 5);
// → [15, 10, 5, 0]
_.rangeRight(0, -4, -1);
// → [-3, -2, -1, 0]
_.rangeRight(1, 4, 0);
// → [1, 1, 1]0, 5, 10, 15 → reversed array._.range(0, -4, -1), reverse order.start for the length of the range.rangeRight vs rangeSame arguments, opposite array order.
_.range(1, 5);
// → [1, 2, 3, 4]
_.rangeRight(1, 5);
// → [4, 3, 2, 1]
// countdown with step (not the same as rangeRight alone):
_.range(4, 0, -1);
// → [4, 3, 2, 1]step._.rangeRight is a Lodash Util helper since 4.0.0. It runs anywhere Lodash runs — modern browsers (CDN or bundle) and Node.js / Bun / Deno with npm install lodash.
Available in [email protected] full builds and the lodash/rangeRight modular import. Works in evergreen browsers and current Node LTS when Lodash is installed.
Bottom line: Safe for production once Lodash is loaded. Prefer import rangeRight from "lodash/rangeRight" for smaller bundles.
Create a pristine Lodash copy for safe mixins and plugins.
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