The has() method in Collect.js is used to check whether the key exists in the collection or not. In JavaScript, the array is first converted to a collection and then the function is applied to the collection.
Syntax:
data.has('key')
Parameters:
- Key: This parameter holds a new operational value.
Return value: This method returns a Boolean value either True or False.
Below examples illustrate the has() function in Collect.js
Example 1: Here in this example, we take a collection and then using the has() function we check for the single value.
// Importing the collect.js module
const collect = require('collect.js');
const collection = collect({
name : 'GeeksforGeeks',
Field : 'Education',
Address : 'Noida',
});
console.log(collection.has('name'));
Output:
true
Example 2: Here in this example, we take a collection and then using the has() function we check for the multiple values.
// Importing the collect.js module
const collect = require('collect.js');
const collection = collect({
name : 'GeeksforGeeks',
Field : 'Education',
Address : 'Noida',
});
console.log(collection.has('name', 'Field', 'Address'));