_.first

Returns the first element of an array. Passing n will return the first n elements of the array.

// Underscore/Lodash
_.first([1, 2, 3, 4, 5]);
// => 1
 
_.first([1, 2, 3, 4, 5], 2);
// => [1, 2]
 
// Native
[1, 2, 3, 4, 5][0];
// => 1
//or
[].concat(1, 2, 3, 4, 5).shift()
// => 1
//or
[].concat([1, 2, 3, 4, 5]).shift()
// => 1
 
// Native (works even with potentially undefined/null, like _.first)
[].concat(undefined).shift()
// => undefined
 
[1, 2, 3, 4, 5].slice(0, 2);
// => [1, 2]

Browser Support for Array.prototype.slice()

1.0 ✔	✔	1.0 ✔	✔	✔	✔