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Message-ID: <1536350.F63rdpPjnV@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Wed, 11 Dec 2013 00:22:50 +0100
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Subject: Re: best method to "hide" a whole <table> column ?
Newsgroups: comp.lang.javascript
References: <4a645078$0$292$7a628cd7@news.club-internet.fr> <8d349f92-a64b-4837-9f00-cbcc4d07f985@k19g2000yqn.googlegroups.com> <0a06e88a-f13d-4ced-a49a-361556b80643@googlegroups.com> <l87tmt$860$2@dont-email.me>
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Denis McMahon wrote:

> function hide(tid,c,h=true){
                       ^^^^^
Syntax error.  Default parameters cannot (yet) be defined this way in 
strictly conforming implementations of ECMAScript.  You have to initialize 
them if they are not present, for example:

  function hide(tid, c, h)
  {
    if (typeof h == "undefined")
    {
      h = true;
    }

    /* or */

    if (arguments.length < 3)
    {
      h = true;
    }

The difference between the first and second approach is that with the second 
one there is no false positive if “undefined” is passed for “h”.

>   var i,t=document.getElementById(tid);
>   for(i=0;i<t.rows.length;i++)
>     t.rows[i].cells[c-1].style.display=h?"none":"table-cell";

    t.rows[i].cells[c-1].style.display = h ? "none" : "";

Setting the value of a style property to the empty string resets it to its 
initial value.

> }
> […]

-- 
PointedEars

Twitter: @PointedEars2
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