Calling JavaScript variables in CSS

Question

I know there are various threads on this topic. But I am wondering if my approach is entirely incorrect. I am trying to set the height of a wrapper depending on the browser size. So far I have this JavaScript function that returns the height and width of the screen.

<script language="JavaScript">
var screenW = 640, screenH = 480;
if (parseInt(navigator.appVersion)>3) {
 screenW = screen.width;
 screenH = screen.height;
}
else if (navigator.appName == "Netscape" 
    && parseInt(navigator.appVersion)==3
    && navigator.javaEnabled()
   ) 
{
 var jToolkit = java.awt.Toolkit.getDefaultToolkit();
 var jScreenSize = jToolkit.getScreenSize();
 screenW = jScreenSize.width;
 screenH = jScreenSize.height;
}
</script>

I wish to call the values of these variables later in : <div id="wrapper" style = "height: valuepx; screenHwidth: screenWpx;> in similar fashion to a PHP echo.

How should I be approaching calling the variable?

you are mixing PHP, Java, JavaScript and CSS. None of this will work. — Daniel A. White
– Daniel A. White, Commented Sep 29, 2012 at 13:25
Thanks for the feedback. No I have not considered it. I am new to JavaScript and CSS. What would be the best resource for me to read that should help me work this out? Thanks in advance. — Ríomhaire
– Ríomhaire, Commented Sep 29, 2012 at 15:31

John Dvorak · Accepted Answer · 2012-09-29 13:28:52Z

3

You have to assign the style from Javascript:

var wrapper=document.getElementById("wrapper");
wrapper.style.height = screenH;
wrapper.style.width = screenW;

or with jQuery:

$("#wrapper").css({
  width:screenW, 
  height:screenH
})

answered Sep 29, 2012 at 13:28

John Dvorak

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1 Comment

Ríomhaire Over a year ago

Thanks. Should inputting the first solution into my above function work if inserted correctly?

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