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  1. #1
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    Simple statement to find it number is odd or even

    Here it is:

    Code:
    var isEven = function(number) {
      if(isEven%2===0){
      	return true;
      	
      }else{
      	return false
      }
    };
    
    isEven(2);

    This seems to return false, but I have no idea why. AFAIK if you put in an even number, it should hit the if statement, come up with no remainder and so return true! Sadly it returns false every time. I know this is very simple stuff guys but please don't make fun of me I learn better when I can ask stupid questions and you only have to ask them once!

  • #2
    Supreme Master coder! Philip M's Avatar
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    if(isEven%2===0){

    should be

    if(number%2===0){

    You are testing whether the number is odd/even, not the function!

    It is dangerous to use number as the name of a variable - too easily confused with the Javascript method Number().

    Quizmaster: In 1917 King George V changed the name of the British royal house from Saxe-Coburg Gotha to what?
    Contestant: Tudor.
    Last edited by Philip M; 12-19-2012 at 01:01 PM.

    All the code given in this post has been tested and is intended to address the question asked.
    Unless stated otherwise it is not just a demonstration.

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  • #3
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    DAMMIT! Knew it would be something simple! Thanks very much!

  • #4
    Supreme Master coder! Old Pedant's Avatar
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    Quote Originally Posted by Philip M View Post
    Quizmaster: In 1917 King George V changed the name of the British royal house from Saxe-Coburg Gotha to what?
    Contestant: Tudor.
    Okay, why is that funny?

    <grin style="MONSTROUS!"> Who but a Brit would care? </grin>
    An optimist sees the glass as half full.
    A pessimist sees the glass as half empty.
    A realist drinks it no matter how much there is.

  • #5
    Supreme Master coder! Philip M's Avatar
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    Quote Originally Posted by Old Pedant View Post
    Okay, why is that funny?

    <grin style="MONSTROUS!"> Who but a Brit would care? </grin>
    Because the House of Tudor was the monarchy in the 16th century. I would have thought that as an educated person you knew that, actually. The correct answer is, of course, Windsor.

    All the code given in this post has been tested and is intended to address the question asked.
    Unless stated otherwise it is not just a demonstration.

  • #6
    Supreme Master coder! Old Pedant's Avatar
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    Oh, come on, Philip! I knew all that! Just having fun.

    I even knew that the name was originally "Tewdwr" and/or "Tudur".

    (Have to admit I don't know where George V came up with the name "Windsor" other than, presumably, from Windsor Castle. Did it ever have any actual royal associations before that?)
    An optimist sees the glass as half full.
    A pessimist sees the glass as half empty.
    A realist drinks it no matter how much there is.

  • #7
    Master Coder felgall's Avatar
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    Quote Originally Posted by Old Pedant View Post
    (Have to admit I don't know where George V came up with the name "Windsor" other than, presumably, from Windsor Castle. Did it ever have any actual royal associations before that?)
    My understanding is that it was from Windsor castle. The name schange was needed in a hurry to get rid of the German surname that Victoria acquired for the family when she married Albert - given that George had just gone to war with his German cousin.
    Stephen
    Learn Modern JavaScript - http://javascriptexample.net/
    Helping others to solve their computer problem at http://www.felgall.com/

    Don't forget to start your JavaScript code with "use strict"; which makes it easier to find errors in your code.

  • #8
    Senior Coder rnd me's Avatar
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    simplified :

    Code:
    function isEven (n) {
       	return ! (n % 2);
    }
    
    isEven(2);
    my site (updated 13/9/26)
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