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DMD3475/week-6/sum_range.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Sum of a Range</title>
</head>
<body>
<script>
function range( start, end, increment ) {
var result = [];
if ( increment == undefined )
increment = 1;
numLoops = Math.abs( (end - start)/ increment ) + 1 ;
for ( var i = 0; i < numLoops; i ++ ) {
result.push( start );
start += increment;
}
return result;
}
function sum( numArray ) {
var arrayTotal = 0;
numLoops = numArray.length;
for ( var i = 0; i < numLoops; i ++ ) {
arrayTotal += numArray[i];
}
return arrayTotal;
}
console.log(range(1, 10));
// → [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
console.log(range(5, 2, -1));
// → [5, 4, 3, 2]
console.log(sum(range(1, 10)));
// → 55
</script>
</body>
</html>