The opposite of _.property: creates a function that returns the value at a given path of a fixed object. Part of Lodash Util since 3.0.0 (stable — not deprecated).
Note: The object is fixed; the path is supplied later — ideal for _.map over a list of paths against one target.
Call _.propertyOf. Start with this line.
_.propertyOf(object)| Call | What it does |
|---|---|
_.propertyOf(object) | Primary signature. |
_.propertyOf(...) | Call the util helper. |
Prefer import propertyOf from "lodash/propertyOf" when you want a smaller bundle.
_.propertyOf(object)| Parameter | Description |
|---|---|
| object | Required. Object to read from |
| Return Value | Description |
|---|---|
| * | Accessor (path) → value |
Read several paths from one shared object.
var array = [0, 1, 2],
object = { 'a': array, 'b': array, 'c': array };
_.map(['a[2]', 'c[0]'], _.propertyOf(object));
// → [2, 0]a, b, c all point at [0, 1, 2]._.propertyOf(object) fixes the object; paths arrive later.'a[2]' → 2, 'c[0]' → 0.Same results with array paths instead of bracket strings.
var array = [0, 1, 2],
object = { 'a': array, 'b': array, 'c': array };
_.map([['a', '2'], ['c', '0']], _.propertyOf(object));
// → [2, 0]['a', '2'] resolves like 'a[2]'.[2, 0].You do not need _.map — pass one path to the returned function.
var array = [0, 1, 2],
object = { 'a': array, 'c': array };
var get = _.propertyOf(object);
get('a[2]');
// → 2
_.get(object, 'c[0]');
// → 0 // one-shot form_.propertyOf._.get is the one-shot equivalent.propertyOf; one read → get.Absent paths return undefined — no error.
var object = { a: [0, 1, 2] };
var get = _.propertyOf(object);
get('a[9]');
// → undefined
_.get(object, 'a[9]', -1);
// → -1 // default via _.geta[9] does not exist → undefined._.get when you need a fallback in one call.propertyOf when the accessor itself is what you pass around.propertyOf vs propertySame read, opposite binding order.
var array = [0, 1, 2],
object = { 'a': array };
_.propertyOf(object)('a[2]');
// → 2
_.property('a[2]')(object);
// → 2 // same result, path fixed firstobject.a[2] → 2.propertyOf; many objects / one path → property._.propertyOf is a Lodash Util helper since 3.0.0. It runs anywhere Lodash 3+ / 4.x runs — modern browsers (CDN or bundle) and Node.js / Bun / Deno with npm install lodash.
Available in [email protected] full builds and the lodash/propertyOf 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 propertyOf from "lodash/propertyOf" for smaller bundles. Pair with _.map when you have many paths on one object.
Create an array of numbers progressing from start up to, but not including, end.
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