getp

Get nested properties. Support dots and array descriptions.

Example

var getp = require('getp');
 

o                expr                             value
---------------  -------------------------------  ---------
o.u = 1          getp(o, 'u')                     1
o.v = null       getp(o, 'v')                     null
o.z = undefined  getp(o, 'z')                     undefined
o.w.x = 1        getp(o, 'w', 'x')                1
o.w.x = 1        getp(o, ['w', 'x'])              1
o.w.x = 1        getp(o, 'w.x')                   1
o.v = null       getp(o, 'v.x')                   undefined
o.x.y.z.u.v = 1  getp(o, 'x', ['y', 'z'], 'u.v')  1
o["a.b"] = 1     getp(o, 'a.b')                   undefined
o["a.b"] = 1     getp(o, 'a.b', false)            1

getp(obj, name1, name2,..., [parseDots = true])

obj

Type: Anything

The host object of the property being accessed.

name

Type: String, Number, Array

If Array, it is expanded as an array of strings.

If String, it will be parsed as part of the path to reach the property.

parseDots

Type: Boolean

Default: true

If false, name strings will be treated literaly.

set(o, ...names, v)

var set = require('getp/set')
var o = {}
set(o, 'x', 'y', 1)
console.log(o)
// { x: { y: 1 } }
 
var o = {}
set(o, ['x', 'y'], 1)
console.log(o)
// { x: { y: 1 } }