Fibonacci

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

by makilo123

HTML

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Fibonacci <br><br>

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
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JavaScript

var a = 2, b = 1, temp;
  var terms = [a, b];
  var evens = [];

  while (a < 4000000){
    temp = a;
    a = a + b;
    b = temp;
    if (a < 4000000){terms.push(a)}
  }
	console.dir(terms);
  
  for(var i = 0; i<terms.length; i++){
  	if((terms[i] % 2) == 0){
    	evens.push(terms[i]);
      console.log(evens)
    }
  }
  
  var sum = evens.reduce((a,b) => a+b, 0);
  console.log(sum)