How to find the sum of an array of numbers in Javascript ?

Question

How to find the sum of an array of numbers in Javascript ?

Given an array [1, 2, 3, 4], how can I find the sum of its elements? (In this case, the sum would be 10.)

I thought $.each might be useful, but I'm not sure how to implement it.

jquery javascript

4 years ago by akshay1995

2 Answers

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**aashaykumar** · Answer 1 · 2021-05-19T11:27:25

aashaykumar



console.log(

  [1, 2, 3, 4].reduce((a, b) => a + b, 0)

)

console.log(

  [].reduce((a, b) => a + b, 0)

)

4 years ago

**kshitijrana14** · Answer 2 · 2021-05-20T13:39:13

Why not reduce? It's usually a bit counter intuitive, but using it to find a sum is pretty straightforward:

var a = [1,2,3];

var sum = a.reduce(function(a, b) { return a + b; }, 0);

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How to find the sum of an array of numbers in Javascript ?

2 Answers

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