Lodash _.prototype.chain() method of Sequence in lodash is used to create an instance of lodash wrapper accompanied by explicit method chain sequences enabled.
Syntax:
_.prototype.chain();Parameters:
This method doesn't accept any parameter.
Return Value:
This method returns the new lodash wrapper instance.
Example 1: In this example, we are chaining the given array and getting the tail value by the use of the lodash _.prototype.chain() method.
// Requiring lodash library
const _ = require('lodash');
// Initializing authors variable
let authors = [
{ 'author': 'Nidhi', 'articles': 750 },
{ 'author': 'Nisha', 'articles': 500 }
];
// Calling chain() method and creating
// an explicit chaining sequence
let result = _(authors).chain()
.tail()
.value();
// Displays output
console.log(result);
Output:
[ { author: 'Nisha', articles: 500 } ]Example 2: In this example, we are chaining the given array and getting the head value having article as a key by the use of the lodash _.prototype.chain() method.
// Requiring lodash library
const _ = require('lodash');
// Initializing authors variable
let authors = [
{ 'author': 'Nidhi', 'articles': 750 },
{ 'author': 'Nisha', 'articles': 500 }
];
// Calling chain() method and creating
// an explicit chaining sequence
let result = _(authors).chain()
.head()
.pick('articles')
.value();
// Displays output
console.log(result);
Output:
{ articles: 750 }Example 3: In this example, we are chaining the given string by the use of the lodash _.prototype.chain() method.
// Requiring lodash library
const _ = require('lodash');
// Calling chain() method and creating
// an explicit chaining sequence
let obj = _("GeeksforGeeks").chain().value();
// Displays output
console.log(obj[0]);
console.log(obj[4]);
console.log(obj[7]);
console.log(obj[11]);