has-own-deep

has-own-deep

Returns true if an object has an own, nested property using dot notation paths ('a.b.c').

Install

$ npm install --save has-own-deep

Usage

const hasOwnDeep = require('has-own-deep');
const obj = { a: { b: { c: 'd' } } };

console.log(hasOwnDeep(obj, 'a'));     //=> true
console.log(hasOwnDeep(obj, 'a.b'));   //=> true
console.log(hasOwnDeep(obj, 'a.b.c')); //=> true

console.log(hasOwnDeep(obj, 'c'));     //=> false
console.log(hasOwnDeep(obj, 'a.c'));   //=> false
console.log(hasOwnDeep(obj, 'a.b.d')); //=> false

Keys with dots

console.log(hasOwnDeep({ 'a.b.c': 'd' }, 'a.b.c'));      //=> true
console.log(hasOwnDeep({ 'a.b': { c: 'd' } }, 'a.b.c')); //=> true
console.log(hasOwnDeep({ a: { 'b.c': 'd' } }, 'a.b.c')); //=> true

About

$ npm install && npm test

$ npm install -g verbose/verb#dev verb-generate-readme && verb

Author

• linkedin/in/jonschlinkert
• github/jonschlinkert
• twitter/jonschlinkert

License