Passing a variable to an if statement in a function

Question

Here is what I'm trying to do, I want to pass a variable to a function (no problems there). But then I want to use it in an if statement.

colnum(5, 1);


    function colnum (columnnumber, reset)
    {
        var divcount = $('[class^="box"]').length;  
        var columnnumberround = Math.round(divcount / columnnumber);
        var start = 0;
        var end = columnnumberround-1;  

        if (reset=1)
        {
            var i = 0;
            while (i<=columnnumber)
            {
              $('div.box'+start).add($("div.box"+start).nextUntil("div.box"+end)).add($("div.box"+end)).addClass("col"+i);
              $(".col"+i).wrapAll("<div class=column></div>");

              start+=columnnumberround;
              end+=columnnumberround;
              i++;
            }       
        }
        else
        {
            alert("test");
        }
    }

and why are you overwriting the input arg? `var columnnumber = 5;` — fearofawhackplanet, May 23 '11 at 13:32

score 2 · Answer 1 · edited May 23 '17 at 11:58

2

It should actually be:

if (reset === 1)

JavaScript has two different equality operators, == and ===.
See Which equals operator (== vs ===) should be used in JavaScript comparisons?

Using the type-coercing equality operator (==) can lead to WTFs like this one:

> [[[[[[[2]]]]]]] == 2
  true

edited May 23 '17 at 11:58

Community

1
1

answered May 23 '11 at 13:30

Matt Ball

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score 1 · Answer 2 · answered May 23 '11 at 13:30

1

Your problem is you are using '=' instead of '==' in your IF statements

if (reset=1)

should be

if (reset==1)

answered May 23 '11 at 13:30

arclight

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Passing a variable to an if statement in a function

2 Answers2