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JavaScript - Base64 Encoding Querystring
Hello!
I am trying to implement some JS that redirects a user after selection from a drop down box. The redirection includes a querystring so I want to use base64 to encode that. The 'goto' code below works fine if I remove the reference to the encode64 function. However when I use the encode64 function it doesn't work. So I'm guessing I have something wrong with the base64 portion. Code: <script language="JavaScript">
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
function encode64(input) {
var output = new StringMaker();
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0;
while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output.append(keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4));
}
return output.toString();
}
function goto(form) {
var index=form.drpAccount.selectedIndex
if (form.drpAccount.options[index].value != "0") {
location="/billing-test.php?q=" + encode64(form.drpAccount.options[index].value);
}
}
</script>
Similar TutorialsHi, I'm just starting out with a few bits of javascript and have hit a problem. The story is this: I have a basic HTML page that I want to display using a different css file depending on the page that the request comes from. I though I'd do this by appending "?cs=a" or "?cs=b" depending on the calling page. My problems are occuring whilst trying to read the data in the URL (querystring?) The code below is meant to be a bit of a debugger sort of affair in that it should display the variables but for the life of me I can't get it to work. The problem is that none of the variables seem to be getting populated with data, therefore nothing is displayed on the page and no css file is loaded. I'm pretty sure its something relatively simple so would appreciate if an expert could cast their eye over what I have below and point out the error of my ways... Code: <%@LANGUAGE="JAVASCRIPT" CODEPAGE="65001"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<SCRIPT type="text/javascript">
var thequerystring = new String(Request.QueryString("cs"));
if (thequerystring == "a") {
cssfile = "css1.css";
}
if (thequerystring == "b") {
cssfile = "css2.css";
}
document.write('<link href="'+cssfile+'" type="text/css" rel="stylesheet">');
</SCRIPT>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<p><span class="texttype">hello</span></p>
this should change the format of the text depending on the css file that was loaded... in theory!!
<p> </p>
<p>Here is a list of the variables and their values...
<script type="text/javascript">
document.write('<b>Some variables...</b><br>');
document.write('cssfilename: '+cssfile+'<br>');
document.write('Querystring text: '+thequerystring+'<br>');
</script>
</p>
<a href="javascript: history.go(-1)">Back <-- </a>
</body>
</html>
Many thanks in advance Dan hi, Now that I have my list of Towns (using JQuery to connect to mySQL and show data in JSON format) I would like to click on a town and pass the town name so I can request it from querystring or getElementByID and then in a simple IF statement or whatever select the PHP page WHERE Town = Selected Town I hope someone can point me to a relevant tutorial? Hi I am using Django to build my website i have some data on the server side which gets passed into my templates, this data become encoded using simplejson which is django python import my data structure looks something like this (but with a few more dictionary's thrown in " : Code:
archive = ({'id' :year.id, 'months' : allMonths})
encodedData=simplejson.dumps(archive)
The data is successful encoded and i pass the list into an external java script file, Now i need to figure out how to decode the data inside a JS function can anybody shed some light on this or even point my in the right direction. Thanks for reading This issue is right at the cross point between the java and javascript. Basically, I want to DYNAMICALLY pass some Cyrillic characters (such as Алла Пугачева) at the runtime to the javascript function, as following: Current text encoding setting is Cp1252 in JAVA IDE. response.getOutputStream().println("<script>test('" + testCoding +"');</script>"); If the testCoding is normal latin chracter (such as "abc, xyz"), this will work, so that at the runtime, it will execute the funciton test(param) and passing the parameter, "abc, xyz" to the javascript function test(param). The frontend javascript function test(param) will further display it as: field.innerHTML = param; But if it is the Cyrillic characters (such as Алла Пугачева), it won't work. The "Алла Пугачева" will be passed as the garbage character and displayed as so. How can I in the java class DYNAMICALLY set up the encoding so that the sysytem at the runtime will acccept the Cyrillic characters. I would believe I need to setup such ancoding as UTF-8. But I do not know how to? OR, How can I process the Cyrillic characters (such as Алла Пугачева), in the javascript function so that it can be displayed properly? Thanks Scott hi, I would like your help on the following matter. I have a JavaScript file currently reading from another site xml file in (utf-8) and I would like to store those data in my database which is in SQL_Latin1_General_CP1_CI_AS. Is there any function in JavaScript that can encode (convert) text from utf-8 to SQL_Latin1_General_CP1_CI_AS or any other way to do that? Hi All, I need to know, how can we get character encoding in any site through coding. Actually i need to add an option in my website, in which i am entering a domain name(url of any website i.e. "http://www.yahoo.com") and through coding i have to find out the character encoding, doctype, frameset.. etc of the entered URL. OR Are there any such links which can help me out to get these parameters directly by passing the url only. Can anyone please help me out to get the parameters of any site....... waiting for ur reply`s Thanks gaurav joshi Hi, Sorry this is probably quite a noobish question, but I have a function which accepts the parameter "screen_name". I want to include this variable within some HTML, which is the code for a Twitter. Here is the function: PHP Code: var htmlTest = "<script src='http://widgets.twimg.com/j/2/widget.js'></script>" + "<script>" + "new TWTR.Widget({" + "version: 2," + "type: 'profile'," + "rpp: 8," + "interval: 6000," + "width: 250," + "height: 300," + "theme: {" + "shell: {" + "background: '#0e428f'," + "color: '#ffffff'" + "}," + "tweets: {" + "background: '#ffffff'," + "color: '#615161'," + "links: '#0748eb'" + "}" + "}," + "features: {" + "scrollbar: false," + "loop: false," + "live: false," + "hashtags: true," + "timestamp: true," + "avatars: false," + "behavior: 'all'" + "}" + "}).render().setUser('" + screen_name + "').start();" + "</script>"; var test = "hello"; document.getElementById('dynamic-content').innerHTML = htmlTest; } </script> The function works fine when I omit the HTML and just return "screen_name" to the target <div>, but it doesn't work as above. Can anyone spot what I'm doing wrong??? |
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