CODEWITHSUNDEEP
javascriptarraysloopsmethods
dL0008
dL0008

Reputation: 33

How to remove multiple sequential items of an array - JavaScript

I am curious to know how I can quickly and most efficiently remove a number of items from an array in JavaScript without creating a loop.

EXAMPLE:

var array = [1,2,3,4,5,6,7,8,9];
array.remove[0..4]; //pseudo code

console.log(array);//result would then be [6,7,8,9]

Is there a function for this, or is a custom loop required? Rudimentary question I suppose, but just wondering out of curiosity.

Upvotes: 1

Views: 180

Answers (3)

hex494D49
hex494D49

Reputation: 9235

Using filter method

var a = [1,2,3,4,5,6,7,8,9], b = [];
b = a.filter(function(element, index){ return index > 4 });

Output of b[]

[6,7,8,9]

Upvotes: 0

Bradley Smith
Bradley Smith

Reputation: 39

You could just use .slice() on the array.

var array = [1,2,3,4,5,6,7,8,9];
array = array.slice(5,array.length);

Upvotes: 0

Dennis
Dennis

Reputation: 32598

Use Array#splice:

var array = [1,2,3,4,5,6,7,8,9];
array.splice(0, 4); // returns [1,2,3,4]
console.log(array); // logs [5,6,7,8,9]

Upvotes: 4

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