o-has

Returns true if an object has a given property

Install

$ npm install --save o-has

Example

var has = require('o-has');

var a = {
  name: 'vikram'
};

console.log(has(a, 'name'));
// -> true

Explination

In case we are using JavaScript objects for hashtable sulution then, we can rely on any of its inherited properties such as hasOwnProperty here is an example

var obj = {
	name: 'vikram',
	hasOwnProperty: 'dummy'
};

console.log(obj.hasOwnProperty('hasOwnProperty'));
// -> TypeError: Property 'hasOwnProperty' of object obj is not a function

In above example it tries to execute inherited hasOwnProperty and which not a function.

The workaround for this problem is to use Object.prototype hasOwnProperty method

require('o-has')(object, key)

Arguments:

• object: Object
• key: the key that to be checked

Returns: Returns true if an object has a given property

License

© 2016 vikram. MIT License