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keys-in-object

v1.3.1

Published

Find if the provided key of an object exists and retrieve the value(s)

Downloads

1,066

Readme

Keys In Object

A Javascript library for retrieveing easy Object key's values.

Installation

npm install keys-in-object

How to use it

Node.js

var keysInObject = require('keys-in-object');

var users = {
	id_1: {
        name: 'John Doe',
        email: '[email protected]'
    },
	id_2: {
        name: 'Hohn Moe',
        email: '[email protected]'
    },
	id_3: {
        name: 'Joon Doo',
        email: '[email protected]'
    },
    id_4: {
        user_info: {
            name: 'Johnny Foe',
            email: '[email protected]'
        }
    }
};

var arrayOfUserNames = keysInObject(users, 'name');
console.log(arrayOfUserNames)
// ['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe']

Also you can pass an Array of Objects

var keysInObject = require('keys-in-object');

var user = {
	id_1: {
        name: 'John Doe',
        email: '[email protected]'
    },
	id_2: {
        name: 'Hohn Moe',
        email: '[email protected]'
    },
	id_3: {
        name: 'Joon Doo',
        email: '[email protected]'
    },
    id_4: {
        user_info: {
            name: 'Johnny Foe',
            email: '[email protected]'
        }
    }
};

var usersArray = [user, user];
var arrayOfUserNames = keysInObject(usersArray, 'name');
console.log(arrayOfUserNames)
//[
      ['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe'],
      ['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe']
  ]

Browser

A build folder exists in keys-in-object under node_modules Include the keysInObject.js file into your html script tags

<!doctype html>
<html>
    <head>
    </head>
    <body>
        <script src="./path to file/keysInObject.js"></script>
        <script>
            var users = {
	            id_1: {
                    name: 'John Doe',
                    email: '[email protected]'
                },
	            id_2: {
                    name: 'Hohn Moe',
                    email: '[email protected]'
                },
	            id_3: {
                    name: 'Joon Doo',
                    email: '[email protected]'
                },
                id_4: {
                    user_info: {
                        name: 'Johnny Foe',
                        email: '[email protected]'
                    }
                }
            };

            var arrayOfUserNames = keysInObject(users, 'name');
            console.log(arrayOfUserNames)
        </script>
    </body>
</html>

Additional feature

If you want to strip the unnecessary keys from the object and also to keep it's structure you can pass an optional Boolean Variable.

var userNames = keysInObject(users, 'name', true);
console.log(userNames)
/*
{
  id_1: {
    name: 'John Doe'
  },
  id_2: {
  	name: 'Hohn Moe'
  },
  id_3: {
  	name: 'Joon Doo'
  },
  id_4: {
    user_info: {
      name: 'Johnny Foe'
    }
  }
}
*/

// Or if you request for user_info
var userInfo = keysInObject(users, 'user_info', true);
console.log(userInfo)
/*
{
  id_4:{
    user_info: {
      name: 'Johnny Foe',
      email: '[email protected]'
    }
  }
}
*/

Tests

Simply clone the repo, npm install, and run npm test