Lodash _.prototype.next() Method
Lodash _.prototype.next() method of Sequence in lodash is used to find the next value on a wrapped object which follows the iterator protocol.
Syntax:
_.prototype.next();
Return Value:
This method returns the value of the next iterator.
Example 1: In this example, it returns the next value of the wrapper by the use of the lodash _.prototype.next() method.
Javascript
const _ = require( 'lodash' );
let wrapper = _([5, 6]);
let res1 = wrapper.next();
let res2 = wrapper.next();
console.log(res1);
console.log(res2);
|
Output:
{ done: false, value: 5 }
{ done: false, value: 6 }
Example 2: In this example, the output is ‘undefined’ as there is no value to print.
Javascript
const _ = require( 'lodash' );
let wrapper = _([]);
let result = wrapper.next();
console.log(result);
|
Output:
{ done: true, value: undefined }
Example 3: In this example, only the defined value is returned to the output.
Javascript
const _ = require( 'lodash' );
let result1 = _({ 'f' : 5 }).next();
let result2 = _({ 'g' : (1 / 0) }).next();
console.log(result1);
console.log(result2);
|
Output:
{ done: false, value: 5 }
{ done: false, value: Infinity }
Reference: https://lodash.com/docs/4.17.15#prototype-next
Last Updated :
30 Oct, 2023
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