Google Interview Question: How would you extend Array in JavaScript so that it could add all the values stored in an array? | Glassdoor

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Google Developer Programs Engineer interview

Google interview question

Developer Programs Engineer Interview

How would you extend Array in JavaScript so that it could add all the values stored in an array?

Interview Answers

Anonymous

8 Mar 2010

This is an exploration of Object prototypes, which demonstrates the level of sophistication with the language.

1

Anonymous

9 Dec 2010

Array.prototype.addValues = function(){ var out=0; for (x = 0; x < arr.length; x++){ out = out + arr[x]; } return out; }

1

Anonymous

30 Jun 2013

arr should be this

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