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JavaScript JavaScript Foundations Numbers The Math Object


How do I solve this Math.floor problem? The question is there is a variable "ageIfILiveToYear2100" already defined but it has a lot of decimal places. Create a variable name "age" and use the Math.floor method to lop off the decimal digits. I have tried but is not working for me.

<!DOCTYPE html>
<html lang="en">
    <title>JavaScript Foundations: The Math Object</title>
    <link rel="stylesheet" href="core.css">
      var diameter = 5.75,
          a = 17,
          b = 42,
          c = 1337,
          ageIfILiveToYear2100 = (new Date(2100, 0, 1) - new Date(1995, 5, 16, 7, 20)) / (1000 * 60 * 60 * 24 * 365.242);

      var circumference= diameter * Math.PI;

      var chance=Math.floor(Math.random()*20 + 0);

      var maxWidth= Math.max(c,b);

      var age = Math.floor() + ageIfILiveToYear2100;

      The JavaScript Math object has the following
      constant (among others):
          Approximately 3.14159. Pi (π) is used
          to determine the circumference of a circle
          given its diameter by multiplying the diameter
          by π. Geometery refresher: the circumference
          of a circle is the distance around the outside
          edge. The diameter is the width of the circle.

      The JavaScript Math object also has the following
      methods (among others):
          Returns a random number between 0 and 1
      Math.max(a, b, ...)
          Returns the largest value of the passed
          Returns the value of a number rounded down to
          the nearest integer

    <h1>JavaScript Foundations</h1>
    <h2>The Math Object</h2>
    <script src="viewer.js"></script>

4 Answers

You're close, you wouldn't add the variable ageIfILiveToYear2100 to Math.floor, you would pass it in to the Math.floor function, like so:

var age = Math.floor(ageIfILiveToYear2100);

I tried it ,but is not working still.

Can you post the code you tried please?

I think your maxWidth is off, too, this passes for the maxWidth variable challenge:

var maxWidth= Math.max(a,b,c);

and this passes: for the age variable challenge:

var age = Math.floor(ageIfILiveToYear2100);

thanks mike again. I appreciate your help. I find my error