The keys() method is used to return all of the collection’s keys.
Syntax:
collect(array).keys()
Parameters: The collect() method takes one argument that is converted into the collection and then keys() method is applied on it.
Return Value: This method returns the collection keys.
Below example illustrate the keys() method in collect.js:
Example 1:
const collect = require('collect.js'); const collection = collect({ name: 'Rahul', dob: '25-10-96', section: 'A', score: 98, }); const keys_val = collection.keys(); console.log(keys_val.all()); |
Output:
[ 'name', 'dob', 'section', 'score' ]
Example 2:
const collect = require('collect.js'); let obj = [ { name: 'Rahul', dob: '25-10-96', section: 'A', score: 98, }, { name: 'Aditya', dob: '25-10-96', section: 'B', score: 96, }, { name: 'Abhishek', dob: '16-08-94', section: 'A', score: 80 }, { name: 'Rahul', dob: '19-08-96', section: 'B', score: 77, }, ]; const collection = collect(obj); const keys_val = collection.keys(); console.log(keys_val.all()); |
Output:
[ 0, 1, 2, 3 ]
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