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JavaScript - Detecting User Screen Size
I am new to Javascripting but am teaching myself and have written this script from my portfolio site in an effort to detect the users screen resolution so that my art is viewed properly. I have ran the code through a debugger and it has comback as "free of errors" but when I run the webpage on my local machine it does nothing, the page displays as if I had written nothing and due to my limited knowledge of Javascript I am at a loss and hoping for someone to say, "look you screwed this part up fix this and it's good to go"... I'm hoping. Thank You all in advance..
Here is the code Code: <script language="Javascript">
function detect(){
if(screen.width<1280||screen.height<720){
alert("This web page is best viewed with a screen resolution of 1280 by 720 or higher. Your current resolution is "+screen.width+" by "+screen.height+". If possible please change your resolution.")
}
else{
alert("Whoa, you have a high resolution. Nice Job!")
}
}
</script>
Similar TutorialsHi there. I'm considering using the script below to detect the screen resolution of the user and then call a specific CSS for that user. The main aim is so that I can design the website at a fixed width for a larger resolution (used by most people), but if the user has a 980px resoltion then they can be catered for as well. Code: <SCRIPT language="JavaScript">
<!--
if ((screen.width>=1024) && (screen.height>=768))
{
window.location="highres.html";
}
else
{
window.location="lowres.html";
}
//-->
</SCRIPT>
I don't want to use liquid layouts as I think it looks messy, and I don't want to design to a width of 960px as I don't like the blank space at the sides on larger resolutions. Is this an acceptable method, or do you think i'll run into problems? Any advice would be great. Cheers. Pat. Hi there I know this picture_viewr js is a fullscreen slide Would it be possible to set a screen size (700x500 e.g.) and then set a background color or the part that would be outside this window??? Thx a lot allberto http://www.alfaaudiovisual.com/pictu...er/ByB/ByB.htm I am using this javascript code to detect screen size and display an alternate css. Code: if (screen.width<1600)
{
document.write('<link rel="stylesheet" href="<?php echo $path ?>/css/templateadjust.css" type="text/css" />');
}
This works fine in FF and Chrome but doesn't seem to work in IE. Any idea why? Im coding an internet browser and when I put it in full screen the web browser part is staying the same size as it was on small screen. How do I make it so when its on small screen it is the size of the window but when its on big screen its the size of the whole screen? Hi all, I'm trying to detect the screen resolution of the client's computer. I've been using the following example: PHP Code: <HTML> <TITLE>screen resolution</TITLE> <HEAD> </HEAD> <BODY> <?php if(isset($_COOKIE["users_resolution"])) $screen_res = $_COOKIE["users_resolution"]; else //means cookie is not found set it using Javascript { ?> <script language="javascript"> <!-- writeCookie(); function writeCookie() { var today = new Date(); var the_date = new Date("December 31, 2023"); var the_cookie_date = the_date.toGMTString(); var the_cookie = "users_resolution="+ screen.width +"x"+ screen.height; var the_cookie = the_cookie + ";expires=" + the_cookie_date; document.cookie=the_cookie location = 'get_resolution.php'; } //--> </script> <?php } ?> <?php echo "Your screen resolution is set at ". $screen_res; ?> </BODY> </HTML> This all works fine except it doesn't factor in if the user changes their screen resolution for any reason. In my own experience I often change resolutions depending on what I'm doing. I posted the question in there PHP forum http://www.codingforums.com/showthread.php?t=192440 but it looks like I'm needing a pure JS solution. Fou-Lu kindly offered their approach: Quote: Originally Posted by Fou-Lu As for detecting changes, only javascript can do that. Instead of using PHP to check that, use pure javascript and alter you're function to check if its cookies are not existant OR the sizes have changed compared to the cookie, update them. And as mentioned, they will still only take effect after the next page load. Could someone help me with this? I want the end result to be something like http://www.screenresolution.org/ in that if you change your resolution then refresh the page, the screen resolution is updated. I hope I've explained this clearly? Let me know if you need any more information. The next challenge is then getting my PHP functions to work in the following manner: PHP Code: if ($screen_width > 1024){ function('1280'); else { function('1024'); } Hi All, I am using jFlow slider for my website and in the head there is that function <script type="text/javascript"> $(document).ready(function(){ $("#myController").jFlow({ slides: "#slides", controller: ".jFlowControl", // must be class, use . sign slideWrapper : "#jFlowSlide", // must be id, use # sign selectedWrapper: "jFlowSelected", // just pure text, no sign auto: true, //auto change slide, default true width: "706px", height: "420px", duration: 500, prev: ".jFlowPrev", // must be class, use . sign next: ".jFlowNext" // must be class, use . sign }); }); </script> What i want to do is detect the browser window (max width 1024 ) and change the width and height attribute of this function...something like this : <SCRIPT language="JavaScript"> <!-- if ((screen.width<=1024) && (screen.height<=768)) { $(document).ready(function(){ $("#myController").jFlow({ slides: "#slides", controller: ".jFlowControl", // must be class, use . sign slideWrapper : "#jFlowSlide", // must be id, use # sign selectedWrapper: "jFlowSelected", // just pure text, no sign auto: true, //auto change slide, default true width: "706px", height: "420px", duration: 500, prev: ".jFlowPrev", // must be class, use . sign next: ".jFlowNext" // must be class, use . sign }); }); } else { $(document).ready(function(){ $("#myController").jFlow({ slides: "#slides", controller: ".jFlowControl", // must be class, use . sign slideWrapper : "#jFlowSlide", // must be id, use # sign selectedWrapper: "jFlowSelected", // just pure text, no sign auto: true, //auto change slide, default true width: "706px", height: "420px", duration: 500, prev: ".jFlowPrev", // must be class, use . sign next: ".jFlowNext" // must be class, use . sign }); }); } //--> </SCRIPT> But can't get this to work...any help please?? //Sam There is a stand-alone, full-screen slide show code published at http://www.javascriptkit.com/script/...ow/index.shtml I would like to know how to set the size of the show to less than full-screen, and how to integrate the show with other web content. Hello I want to add something to my web site. when the user clicks to download. i want to see a pop up screen which says your download has started. <script type="text/javascript"> function show_alert() { alert("Your Download Started!"); } </script> <input type="button" onclick="show_alert()" onclick="get value="Download" /> I dont get where should i put the download link Is it possible to detect keystrokes on the keyboard? I want to detect the arrow keys in particular. I'm going through the online reference links in the sticky now, great resource! Hi guys, i would like a script that detects if quicktime is installed like this one here http://developer.apple.com/internet/...lplugins.shtml but i want it to offer the link to quicktime if not installed, and continue to load the player if quicktime is installed. Im thinking something like this.. Code:
<script type="text/javascript"
src="http://developer.apple.com/internet/webcontent/examples/detectallplugins.shtml "></script>
<script>
if (detectQuickTime == true) {
setTimeout('Redirect()',0);
}
else
{
setTimeout('Redirect2()',0);
}
function Redirect()
{
location.href = 'http://www.mysite.com/player.htm';
}
function Redirect2()
{
location.href = 'http://www.mysite.com/error-install-quicktime.htm';
}
</script>
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if (event.keyCode === 13) {
// do something
}
}
This works in Safari, Opera, Chrome, and even IE, but not in firefox. Any idea how I could fix this? Thanks, Julian |
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