The code is supposed to return the next square if current number is perfect square
function findnextsquare(sq)
{
return Math.sqrt(sq)%1?-1:
Math.pow(Math.sqrt(sq)+1,2);
}
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It is basically an else statement...also called ternary operator – Hackerman Jul 26 '18 at 14:48
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This way you can read it in a better way `return Math.sqrt(sq)%1?-1: Math.pow(Math.sqrt(sq)+1,2);` – Hackerman Jul 26 '18 at 14:49
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So, if this part `Math.sqrt(sq)%1` becomes true, then your function returns -1, else the Math.Pow part. – Hackerman Jul 26 '18 at 14:49
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? Is basically used as shorthand of if else statement. It is called Ternary Operator. Syntax: (condition) ? true : false; – Syed Kashan Ali Jul 26 '18 at 17:08