CODEWITHSUNDEEP
javascripthtml
SRATNA
SRATNA

Reputation: 21

HTML Calculate button

I need some help explaining this code. I have changed the values but for some reason, the calculated value is always coming up as 12. 

<html>
<head>
<script>
function display(x)
{
alert("The result is " + x);
}
function calculate(){
var values = new Array(5, 8, 18, 16);
var output = values[1]+values[3];
if (output >= 23){output = output / 2;}
else {output = output++;}
display(output);
}
</script>
</head>
<body>
<button onclick="calculate()">Click to calculate</button>
</body>

Thanks!

Upvotes: 0

Views: 569

Answers (1)

Glen Despaux Jr
Glen Despaux Jr

Reputation: 1114

You may be thinking that using values[1] and values[3] will give you the first and third elements, specifically 5 and 18. However, the array index begins with 0. Changing your code to values[0] and values[2] would most likely give the desired result.

Upvotes: 1

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