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JavaScript - Iterative Fibonacci sequence / number algorithm

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Using JavaScript it is possible to compute Fibonacci sequence in following way.

1. Iterative algorithm example

// ONLINE-RUNNER:browser;

function calculateValue(number) {
  	if(number < 1) {
    	return 0;
    var a = 0;
    var b = 1;

    for (var i = 1; i < number; ++i) {
		var c = a + b;
      	a = b;
      	b = c;

    return b;

// Example:

for (var n = 0; n < 10; ++n) {
    var value = calculateValue(n);

    console.log('f(' + n + ')=' + value);


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