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JavaScript - Detect Fonts Please?
I really want to learn a way determine whether custom fonts via @font-face got downloaded by the client machine and then set styles differently depending on whether they got the fonts or not.
To start I could run a fonts-inactive.css file to setup the styles to look nice without custom-fonts (this is the base style which should look fine without any JS, flash, custom fonts, etc.). Then run a JS that will run the font-face-rules.css (which attempts to load the fonts via @font-face css rules) - this way if JS isn't active then no fonts will be loaded and the document will default to its fonts-inactive.css. If the JS does run then font-face-rules.css will try to send the fonts. So the JS needs to somehow determine whether the fonts worked or not. If the fonts worked then the JS would run the fonts-active.css which would alter some style rules to make the page look better with the custom fonts (since we know they got the fonts we can tweak the page a little to look better with them). If the fonts didn't work then the JS needs to not run the fonts-active.css and instead just exit out leaving the document with its original, unaltered rules from fonts-inactive.css. (since we know they didn't get the fonts we leave them with the baseline stylesheet which optimizes the appearance for default fonts). Sadly I don't know the first thing about Javascript so I am hoping that you guys might be able to help me come up with something that works. Cheers, line Similar TutorialsHello. I need a javascript font code. It is NOT homework, but I need a script! Thanks! ~Coderguy I need to know two things. How do you position an alert or prompt to anywhere on the screen. How do you change the font for the alert or prompt (i.e Hebrew) Thanks in advance D.A. hey all is there a code where I can detect if the browser is IE6 or IE7 and send them to another webpage? my current design is not compatible with IE6 or 7 and i want to make a new page that's compatible. thanks! im totally new to javascript and i would like to know how i can make my internet page detect the resolution of someone's computer and on base of that use different 'html pages' so that the background fits etc.
I have been searching for a way to accomplish a unique task for a while. Here's the situation: We have several users who are in locations where YouTube is blocked for various reasons. On our homepage we would like to embed a YouTube video except for when YouTube is blocked and then embed an alternative video that is hosted off one of our servers. Is there a way to use JavaScript to detect whether or not YouTube is available and then put in the correct video? Thanks in advance! I am attempting to make an page on my website where visitors can set my website as their homepage. I am trying to make my website read which browser my visitors are using and then redirects them to the page for the right browser where I can tell them how they can set my website as their homepage. Basically I need exactly the same thing as THIS. Could you explain to me in plain English how I can realize this. This is what I know have: Code: <table width="759" border="0" align="center" cellpadding="0" cellspacing="0" >
<tr align="center">
<td width="378" height="28" align="right">Selecteer jouw browser </td>
<td width="16"></td>
<td width="365" align="left"><form id="browserSelection" name="browserSelection" action="customizeBrowser" method="GET"><select name="browser" size="1" id="browser" onchange="document.browserSelection.submit();"><option value="ff" selected>Firefox</option><option value="ie">Internet Explorer</option><option value="chrome">Chrome</option><option value="opera">Opera</option><option value="safari">Safari</option></select></form></td>
</tr>
</table>
________________________________________ Please tell me if I make any English mistakes in my posts. I am trying to write as perfectly possible. Hi, I am currently detecting for Shockwave within IE by doing the following: Code: var isInstalled = false;
if (window.ActiveXObject) {
var control = null;
try {
control = new ActiveXObject('SWCtl.SWCtl');
} catch (e) {
return;
}
if (control) {
isInstalled = true;
}
}
This works as expected and if it fails to detect Shockwave I tell the user to install Shockwave. The problem comes when AcitveX is disabled as it still returns the same message that it's not installed. I would prefer to be able to include an extra step to detect if ActiveX is disabled, in which case I can tell the user to enable it rather than giving them false advice. My only idea would be to detect for an ActiveX Object that every IE user should have installed. Any ideas on what that ActiveX Object could be or any ideas on how I could tackle this problem are greatly appreciated. Thanks Hi once again! Is it possible to detect was the mouse on the move or not in the moment when button is released ? Hi all, The code I am working on uses the idea of detecting mime type support, to see if the add-on is there. Then if the mime type is not supported, it assumes, the add-on is not installed. (No other add-ons have this mime type.) However, there is a problem, if someone disables the add-on, the there is no mime type handler in navigator.mimeTypes['the/MimeType']. Is there some way to detect if an add-on is installed, and also if the add-on is enabled? Thanks, Grae Hi all,i'm wondering how to detect select option changes.For example i want the data in database changed when i click on update button and if there are changes on the select option side.If the values on the select option are not changed,i can't update the data..Is there a way to achieve it?Thanks a lot...
i have a problem. i want to check that whether an element with a specific id exist on page or not. example Code:
<script type="text/javascript">
function bgcolo()
{
if(document.getElementById("jj") == null)
{
return red;
}
else
{
return green;
}
}
</script>
</head>
<body>
<table width="100%" border="1">
<tr>
<td id="oo" bgcolor="return bgcolo();">bvbv</td>
</tr>
</table>
<div id="jj">fggftrytyyyyyyyyy</div>
</body><
Hi.. Anyone can help me to reslove tis.. How to detect iTune plugin in IE Browser...Am using navigator.plugins[] array..its working in firefox,chrome but i need for IE browser..pls help on tis very urgent.. In a <textarea ..., the user can do this: 1) copy some text from somewhere; 2) right-mouse click on the textarea, from the floating menu, select the Paste, the text is pasted in the textarea. How can I detect the action of the Paste menuitem being clicked (on IE and Firefox, respectively)? Thanks Scott I have these "editable" divs in my document. When you click them, a text box comes up and you type something and push enter. It changes what's in the div. There is also a blur event associated with the text box. When the user tabs or clicks away, it fires the blur event. Here lies the problem. I have other elements on the page that are clickable. I don't want those clickable things to fire their events if the user is clicking away from the text box, ie. the blur event. This isn't a problem is the user pushes tab, for instance. So my thought was that if i know how the user blurred (via keyboard, or clicking) i could take the appropriate action. Any ideas? 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 everyone, Let's say i have a form that looks like this: <form name="myForm" action="myPage" onsubmit="return validateForm();"> <input type="text" name="myInput" size="10"> <input type="submit" name="add" value="Add this"> <input type="submit" name="cancel" value="Cancel this"> </form> What i'm trying to do is for the validateForm() function to either redirect the page if "Cancel this" is clicked, or continue processing if "Add this" was clicked. So the validateForm() would work something like this: function validateForm() { if (cancel button is clicked){ location.href=go some place } else{ do some other stuff } } So, how can dynamically detect which submit button was clicked, before submitting the form? (that would fill in the "cancel button is clicked") I tried with document.myForm.cancel.selected and other variations but it always returns undefined. Any input will be greatly appreciated. Thanks! I have a button (in html) and I want the center of the button to be on the center of the line I'm typing on... I was just putting it inside a span and then using this code to move it down. Code: <span style="position:relative; bottom:-10;"> It worked great! But... once I started allowing my users to change the font sizes the buttons got bigger and they needed to be moved down further... if the font size was +1: Code: <font size="+1"><span style="position:relative; bottom:-10;"> if the font size was +6: Code: <font size="+6"><span style="position:relative; bottom:-27.5;"> So is there a way in javascript to detect the current font size and then adjust the span position based off of that? If I can just get the number of the current font size I can do all the rest of the coding, I just need a way to figure out the current font size and put it in a variable... I was thinking of using something like 1.0em so that it stays the same but then we have a basis of measuring off of but I have no clue.. I'm fairly new to javascript. Thanks! In the home page (index.html) i have a flash intro. The first time a user sees the website, the intro should play. Once he goes to another page (about_us or contact_us) and comes back to the home page, it should show a different swf (the version without the intro) - i have created two swf files. I need to know how to change them when the user has already seen the intro or was in the home page before. When i googled, i found something on cookies. I have no clue on how to set them and change the swf file. Would be great if someone has already done this or point me to a tutorial. i need java script. please help!!!!!!! I want to have a browser language detection for 2 languages for Explorer and Firefox and struggle a little to make it work. I don't know really much about JavaScript so I guess I did some grave errors. It works for one language though, but for that I don't really detection. I am not sure if that's wrong, but I try to look for the 'en-' in the language not to deal separately with en-US, en-AU, en-UK etc. PHP Code: <script type="text/javascript"> var str=navigator.language; x = (str.search(/en-/i)); if ( !(x=='-1') ) { document.write("English Mozilla"); } var expl=navigator.browserLanguage; ex = (expl.search(/en-/i)); if ( !(ex=='-1') ) { document.write("Englisch1 Explorer"); } var dm=navigator.language; d1 = (dm.search(/de-/i)); if ( !(d1=='-1') ) { document.write("German Mozilla"); } var dex=navigator.browserLanguage; dexpl = (dex.search(/de-/i)); if ( !(dexpl=='-1') ) { document.write("German Explorer"); } </script> i have pasted below java script code. please check write or wrong <script language = "JavaScript" type="text/javascript"> // Remove down to "ConnectionSpeed Detection section" if you don't want to use cookies // If you drop a cookie it can be picked up on return by php or something else function setCookie(name, value, expire) { document.cookie = name + "=" + escape(value) + ((expire == null ? "" : (";expires=" + expire.toGMTString()))); // alert('A cookie called '+name+' is now set with value: '+value); //enable to alert user of cookie } function getExpireDate() { var expires = new Date(); expires.setTime((new Date().getTime() + 1000 * 60 * 60 * 24 * 365)); return expires; } // ConnectionSpeed Detection section var datasize = 31468; // Size of data being transferred, in Bytes var startTime = 0; var endTime = 0; var date = 0; var ctype = ""; var textMessage = ""; function calcThroughput() { var diffTimeMilliseconds = endTime - startTime; var diffTimeSeconds = diffTimeMilliseconds / 1000; var bits = (datasize * 8); // convert Bytes to bits, var kbits = bits / 1024; // convert bits to kbits var throughput1 = kbits / (diffTimeSeconds * 100 / 100); throughput = throughput1 * .93; // account for IP packet header overhead - averages about 7% setCookie("MediaThroughput", throughput, getExpireDate()); // Remove to not use cookie if (throughput < 185) { ctype = "Home.aspx"; } if (throughput > 185) { ctype = "intro.aspx"; } textMessage = "Bandwidth: <B>" + ctype + "</B><br>time to load: (sec): <B>" + diffTimeSeconds + "</B><BR>kbits loaded:<B> " + kbits + "</B><BR>Throughput (kbps): <B>" + throughput + "</B>" document.location = ctype; } </script> <script language = "Javascript" type="text/javascript"> <!-- A bunch of binary data here in the actual file --> </script> </head><body> <script language = "Javascript" type="text/javascript"> date = new Date(); endTime = date.getTime(); calcThroughput(); </script> automatic detect default page and check to low band version go to html page or high band version go to flash page. please help!!!!!!!!!!!!!!!!!!!!!!!!! |
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