Question

81

rated 0 times [ 83] [ 2] / answers: 1 / hits: 21775 / 12 Years ago, thu, october 18, 2012, 12:00:00

When passing values to the Math.max or Math.min function in JavaScript, they return the highest and lowest values from the input respectively.

However, if a piece of data that is undefined is entered, e.g.

Math.max(5,10,undefined);

The result returned is NaN. Is there a simply way to fix this using JS/jQuery?

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answered 12 Years ago cameron · Accepted Answer

I assume the undefined is actually some variable.

You can substitute -Infinity for any NaN value to ensure a number.

var foo;



Math.max(5, 10, isNaN(foo) ? -Infinity : foo); // returns 10

Same concept can be used on Math.min, but with Infinity:

var foo;



Math.min(5, 10, isNaN(foo) ? Infinity : foo); // returns 5