Lodash - hasIn method

Syntax

_.hasIn(object, path)

Checks if path is a direct or inherited property of object.

Arguments

• object (Object) − The object to query.

• path (Array|string) − The path to check.

Output

• (boolean) − Returns true if path exists, else false.

Example

var _ = require('lodash');
var object = _.create({ 'a': _.create({ 'b': 2 }) });
var result = _.hasIn(object, 'a');

console.log(result);

result = _.hasIn(object,   ['a','b']);
console.log(result);

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

true
true