Question

21

rated 0 times [ 25] [ 4] / answers: 1 / hits: 145616 / 12 Years ago, fri, july 27, 2012, 12:00:00

I need to sum all my numbers from a for loop with javascript

var nums = ['100','300','400','60','40'];



for(var i=1; i < nums.length; i++){



        var num = nums[i] + nums[i];



        alert(num);

}

the outcome i am looking for is 900

Only authorized users can answer the question. Please sign in first, or register a free account.

Total Points: 120

Total Questions: 115

Total Answers: 87

Location: England

Member since Fri, May 22, 2020

4 Years ago

terrence questions

Sun, Mar 13, 22, 00:00, 2 Years ago

Sat, Jun 5, 21, 00:00, 3 Years ago

Mon, Aug 31, 20, 00:00, 4 Years ago

Thu, Jul 23, 20, 00:00, 4 Years ago

Wed, Jun 17, 20, 00:00, 4 Years ago

answered 12 Years ago antoinette · Accepted Answer

var nums = ['100','300','400','60','40'];

var sum = 0;



for(var i=0; i < nums.length; i++){



    sum += parseInt(nums[i]);



}



alert(sum);

Tested: http://jsfiddle.net/GYpd2/6/ (thanks to user1503606)

If nums contains numbers only there is no need for parseInt().