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JavaScript - Charcodeat Encrypting Question
I have a program with the following code:
Code:
enc = ":)g8";
for(i=0;i<enc2.length;++i)
{
document.write(String.fromCharCode(6^enc2.charCodeAt(i)));
}
The above logic decrypts the value "g8" into "</a>" The manipulation seems to be based on the second character of the hex values, as follows: if the hex value ended in 0, 1, 8, or 9, he added 6; if it ended in 2, 3, A, or B, he subtracted 6; if it ended in 4, 5, C, or D, he subtracted 2; if it ended in 6, 7, E, or F, he subtracted 6. How did it do it??? Similar Tutorialsi want to write a code which would prompt the user for his first name and last name with space in between them.The full name must be entered in the same prompt box.Using the charCodeAt() method i wanna test the first character of the user's first name as well as last name.If the first character of first name is in lowercase then it should alert the user as "first name must start with uppercase".And if the first character of second name is in uppercase then it should alert the user as "second name must start with lowercase". ..plzzzz help me and give me some code for this..i m a beginner in javascript..
I am creating a encrypting program, which changes the ASCII value of the characters by 78 then outputting them as an alert. However, the alert isn't popping up. I believe the problem lies in the second for loop where the fromCharCode() and getCharAt() are used. Here is the HTML code Code: <!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <script src="encrypt.js"></script> <script src="decrypt.js"></script> <title>Encrypter/Decrypter</title> </head> <body> <div id="big_wrapper"> <p id="encrypt">Encrypt</p> <input type="button" value="Click to Encrypt" name="encrypt" onClick="getTxt()"> <p id="decrypt">Decrypt</p> </div> </body> </html> Here is the Javascript code: Code: function getTxt(){
var x=prompt("Enter the text you want to encrypt");
alert(encrypt(x));
}
function setCharAt(str,index,chr) {
if(index > str.length-1) return str;
return str.substr(0,index) + chr + str.substr(index+1);
}
function encrypt(text){
var i =0; //preparing all of the variables
var cryptarray = new Array();
for (i=0;i<1000;i++){
cryptarray[i]=null;
}
for (i=0;i<text.length;i++){
cryptarray[i]=text.fromCharCode((text.charCodeAt(i)+78)) //loops through the string, taking characters and adding 78 to their ascii value and putting them in the temp array
}
var temptext = text;
for (i=0;i<text.length;i++){
temptext.setCharAt(i)=cryptarray[i]; //converts the array into a string
}
return temptext;
}
Hey, I've got this script that aparantly encrypts plain text to rot13. Here it is: Code: <script type="text/javascript">
function rot13(txt) {
var map = []
var tmp = "abcdefghijklmnopqrstuvwxyz"
var buf = ""
for (j = 0; j < tmp.length; j++) {
var x = tmp.charAt(j); var y = tmp.charAt((j + 13) % 26)
map[x] = y; map[x.toUpperCase()] = y.toUpperCase()
}
for (j = 0; j < txt.length; j++) {
var c = txt.charAt(j)
buf += (c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z' ? map[c] : c)
}
return buf
}
</script>
<script>var foo = rot13('<?php rec9(); ?>')</script>
<script>document.write(foo)</script>
I won't lie, my Javascript is terrible. I need to embed that script into a page, and have it encrpyt a PHP variable. I have no idea how because the script is assuming you're loading it externally. Can somebody help reconstruct the script so I can easily parse a PHP variable into it, and then output the result? I really do need help, I've spent quite some time attempting and I've got pretty much nowhere. P.s. PHP Code: <?php rec9(); ?> rec9(); is a function in PHP which retrieves whatever the user posted in the textbox (we can just assume that code really mean "12345") - as you can see, I've attempted to parse it but I just don't know where to start. Hopefully I haven't scrambled it too much so somebody who knows Javascript can't help. I really appreciate any help. I was asked to redo a menu for this site: http://www.listlabs.com/index.php It was originally an imaged based menu, but they wanted it all changed to css/html. I used quickmenu and it used JS to produce the arrows at the top of each menu item. Now to my question... I'm trying to program the menu items to stay active when on the current page. At first, it looks correct, but if you hover back over the menu, it changes back to the inactive state. Any help would be great! Thanks. Ok i have been working on this for a while now. I have to have 3 fish swim across the screen in both direction. I have tried a few things but nothing is working. Can someone please explain to me what I am doing wrong. here is my code for you guys to look at it. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Fish tank</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript">
// <![CDATA[
var fishPos = new Array(3);
fishPos[0] = "fish1.gif";
fishPos[1] = "fish2.gif";
fishPos[2] = "fish3.gif";
var fillPosition = 10;
for(var i = 0; i < 50; ++i) {
horizontal[i] = fillPosition;
fillPosition += 10;
}
function fishSwim(fishNumber) {
document.getElementById("fishPos").style.left = horizontal + "px";
++fishPos[fishNumber];
if (fishPos[fishNumber] == 49)
fishPos[fishNumber] = 0;
}
function startSwimming() {
setInterval(fish1Swim, 100);
}
// ]]>
</script>
</head>
<body onload="startSwimming();">
<p><span id="fish1" style=
"position:absolute; left:10px; top:10px"><img src="fish1.gif" alt="Image of a fish" /></span></p>
<p><span id="fish2" style=
"position:absolute; left:10px; top:120px"><img src="fish3.gif" alt="Image of a fish" /></span></p>
<p><span id="fish3" style=
"position:absolute; left:10px; top:250px"><img src="fish2.gif" alt="Image of a fish" /></span></p>
</body>
</html>
I am really not understanding and in my book it only give me a page to read about the animation. I am still new to it. Thanks for looking Could someone please take a look at my code? It's a simple quiz with one multiple choice question and one fill in the blank. When the user clicks on 'submit' I tried to show some kind of response with correct/incorrect images next to the question. It works with the multiple choice question, but not with the fill in the blank. How can I get the fill in the blank question to work. It always shows the answer as being wrong. Thank you. Quote: answer_list = [ ['False'], ['body','hips','knees'] // Note: No comma after final entry ]; response = []; function setAnswer(question, answer) { response[question] = answer; } function CheckAnswers() { var correct = 0; var flag, resp, answ; for (var i = 0; i < answer_list.length; i++) { flag = false; for(var j=0; j<answer_list[i].length; j++){ resp = response[i].toLowerCase(); answ = answer_list[i][j].toLowerCase(); ################################################################################################# if (response[0] == answer_list[0]) { flag = true; document.myquiz.a1c.style.backgroundImage="url('correct.gif')"; } else{ document.myquiz.a1c.style.backgroundImage = "url('incorrect.gif')"; document.myquiz.a1c.value = " ANS: False. Position the head snugly against the top bar of the frame and then bring the foot board to the infant's feet."; } if (response[1] == answer_list[1]) { flag = true; document.myquiz.a1d.style.backgroundImage="url('correct.gif')"; } else{ document.myquiz.a1d.style.backgroundImage = "url('incorrect.gif')"; } ################################################################################################### } if (flag) { correct++; } } document.writeln("You got " + correct + " of " + answer_list.length + " questions correct!"); } </SCRIPT> </HEAD> <FORM name="myquiz"> <B>1. When measuring height/length of a child who cannot securely stand, place the infant such that his or her feet are flat against the foot board.</B> <label><INPUT TYPE=radio NAME=question0 VALUE="True" onClick="setAnswer(0,this.value)">True</label> <label><INPUT TYPE=radio NAME=question0 VALUE="False" onClick="setAnswer(0,this.value)">False</label> <textarea rows="2" cols="85" name="a1c" style="background-repeat:no-repeat"></textarea> <B>2. When taking a supine length measurement, straighten the infant's <INPUT id="test" TYPE=text NAME=question1 size=10 onChange="setAnswer(1, this.value)">, <INPUT id="test" TYPE=text NAME=question1 size=10 onChange="setAnswer(1, this.value)">, and <INPUT id="test" TYPE=text NAME=question1 size=10 onChange="setAnswer(1, this.value)">.</B> <textarea rows="2" cols="85" name="a1d" style="background-repeat:no-repeat"></textarea> <INPUT TYPE="button" NAME="check" VALUE="Check Answers" onClick=CheckAnswers()> </FORM> </div> </FONT> </BODY> </HTML> Hi all I am doing an assigment and have gotten to the end and cannot get the unordered list to work. If I try having my </script> tag below the </ul> it does not display anything If i have it above it will only display the varible names or what ever I type between the <li> </li> tag and not the varible assigment. num1,2,3,4 being the varible name. ie. </script> <ul> <li>num1</li> I have tryed <li>+num2+</li> also tryed <li>(num3)</li> also tryed <li>'num4'</li> also tryed and does not display </ul> </head> </html> The following does not display any thing <ul> <li>num1</li> I have tryed <li>+num2+</li> also tryed <li>(num3)</li> also tryed <li>'num4'</li> also tryed </ul> </script> </head> </html> I need to get the <li></li> to display not what I type in there but the assigment of the varible name I put in there.,or the output the varible calculation produces. Hope that was easy to understand lol Any advise would be awesome, cheers Shayne Darcy. hello all ive been asked to create a javascript slideshow.... and i don't really understand it that much i know a little javscript but not much........ is thier any helpful sites that i can use to teach you step by step to make a javascript slide show???? also if don't want loads of code to be used, i want the code to be clean insted of loads and loads of code what is just unessary. i will be linking the javascript file to the html file so i need to keep the code to a min LOL CHEERS You are given a mathematical expression containing integers and the basic operations: *,+,-, /. Find the number of unique results that can be obtained by parenthesizing the expression differently. i.e., by changing the order of evaluation of the operations. Note that all operations are integer operations. For example, if the input is 2 ∗ 3 + 6/2, your output should be 4. Plzz help me with this qs......... Hello, i haven't understood how to find the id from buttons, links, button images to auto click yet for example, i want to CLICK HERE how can i do that? how i find the id (I Own firefox with firebug and know basic html) it will be something like javascript:document.GetElementById('id').click(); right? but just want to know how to find or create ids on sites for auto click thanks I'm not sure if this is the correct forum or not, but here goes. I want to make a very simple XUL document. Just a simple basic window to be opened up, but, i want the XUL to Load and Render an HTML File. I'm not sure about what function(s) to call to achieve this, can anyone give me any ideas to go on? here's what i have so far use my JavaScript Function called LoadFromDisk(FileName), if the file is there or the load is sucessfull, it can be stored as a variable. And then i have a single Division in the XUL document called RenderWindow. From there i set the innerHTML of the RenderWindow to the data that was loaded from the disk. Is this the right way? thanks I'm in a computer coding class, and I'm having a bit of trouble with Javascript. I'm not looking for anyone to do my homework for me, but any hints you could give me as to why this code isn't working would be greatly appreciated. Basically, I need an empty text box where the user enters their guess as to my age. The user enters their guess, and then gets an answer as to whether their guess is right, too high, or too low. The page looks right, but I can't get the function to work. Thank you... <html> <head> <script> function howoldami(age) if(age=23) { alert("You guessed right!"); } else if { (age>23) alert("I'm not that old."); } else { alert("I'm not that young."); } </script> </head> <body> <form> Guess My Age!<input name="age"><br> <input type=button value=Guess! onclick="howoldami(age.value)"> </form> </body> </html> Hello, I'm still really new to Javascript and need the help of an expert. I found the following script, for a date picker, however, how can it be modified such that the date selected is output into the date format of dd/mm/yyyy, I also don't need the time, so how could I get the chosen date into that format and ignore the time? Code: // Title: Timestamp picker
// Description: See the demo at url
// URL: http://us.geocities.com/tspicker/
// Script featured on: http://javascriptkit.com/script/script2/timestamp.shtml
// Version: 1.0
// Date: 12-05-2001 (mm-dd-yyyy)
// Author: Denis Gritcyuk <denis@softcomplex.com>; <tspicker@yahoo.com>
// Notes: Permission given to use this script in any kind of applications if
// header lines are left unchanged. Feel free to contact the author
// for feature requests and/or donations
function show_calendar(str_target, str_datetime) {
var arr_months = ["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"];
var week_days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"];
var n_weekstart = 1; // day week starts from (normally 0 or 1)
var dt_datetime = (str_datetime == null || str_datetime =="" ? new Date() : str2dt(str_datetime));
var dt_prev_month = new Date(dt_datetime);
dt_prev_month.setMonth(dt_datetime.getMonth()-1);
var dt_next_month = new Date(dt_datetime);
dt_next_month.setMonth(dt_datetime.getMonth()+1);
var dt_firstday = new Date(dt_datetime);
dt_firstday.setDate(1);
dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7);
var dt_lastday = new Date(dt_next_month);
dt_lastday.setDate(0);
// html generation (feel free to tune it for your particular application)
// print calendar header
var str_buffer = new String (
"<html>\n"+
"<head>\n"+
" <title>Calendar</title>\n"+
"</head>\n"+
"<body bgcolor=\"White\">\n"+
"<table class=\"clsOTable\" cellspacing=\"0\" border=\"0\" width=\"100%\">\n"+
"<tr><td bgcolor=\"#4682B4\">\n"+
"<table cellspacing=\"1\" cellpadding=\"3\" border=\"0\" width=\"100%\">\n"+
"<tr>\n <td bgcolor=\"#4682B4\"><a href=\"javascript:window.opener.show_calendar('"+
str_target+"', '"+ dt2dtstr(dt_prev_month)+"'+document.cal.time.value);\">"+
"<img src=\"prev.gif\" width=\"16\" height=\"16\" border=\"0\""+
" alt=\"previous month\"></a></td>\n"+
" <td bgcolor=\"#4682B4\" colspan=\"5\">"+
"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"
+arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+"</font></td>\n"+
" <td bgcolor=\"#4682B4\" align=\"right\"><a href=\"javascript:window.opener.show_calendar('"
+str_target+"', '"+dt2dtstr(dt_next_month)+"'+document.cal.time.value);\">"+
"<img src=\"next.gif\" width=\"16\" height=\"16\" border=\"0\""+
" alt=\"next month\"></a></td>\n</tr>\n"
);
var dt_current_day = new Date(dt_firstday);
// print weekdays titles
str_buffer += "<tr>\n";
for (var n=0; n<7; n++)
str_buffer += " <td bgcolor=\"#87CEFA\">"+
"<font color=\"white\" face=\"tahoma, verdana\" size=\"2\">"+
week_days[(n_weekstart+n)%7]+"</font></td>\n";
// print calendar table
str_buffer += "</tr>\n";
while (dt_current_day.getMonth() == dt_datetime.getMonth() ||
dt_current_day.getMonth() == dt_firstday.getMonth()) {
// print row heder
str_buffer += "<tr>\n";
for (var n_current_wday=0; n_current_wday<7; n_current_wday++) {
if (dt_current_day.getDate() == dt_datetime.getDate() &&
dt_current_day.getMonth() == dt_datetime.getMonth())
// print current date
str_buffer += " <td bgcolor=\"#FFB6C1\" align=\"right\">";
else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6)
// weekend days
str_buffer += " <td bgcolor=\"#DBEAF5\" align=\"right\">";
else
// print working days of current month
str_buffer += " <td bgcolor=\"white\" align=\"right\">";
if (dt_current_day.getMonth() == dt_datetime.getMonth())
// print days of current month
str_buffer += "<a href=\"javascript:window.opener."+str_target+
".value='"+dt2dtstr(dt_current_day)+"'+document.cal.time.value; window.close();\">"+
"<font color=\"black\" face=\"tahoma, verdana\" size=\"2\">";
else
// print days of other months
str_buffer += "<a href=\"javascript:window.opener."+str_target+
".value='"+dt2dtstr(dt_current_day)+"'+document.cal.time.value; window.close();\">"+
"<font color=\"gray\" face=\"tahoma, verdana\" size=\"2\">";
str_buffer += dt_current_day.getDate()+"</font></a></td>\n";
dt_current_day.setDate(dt_current_day.getDate()+1);
}
// print row footer
str_buffer += "</tr>\n";
}
// print calendar footer
str_buffer +=
"<form name=\"cal\">\n<tr><td colspan=\"7\" bgcolor=\"#87CEFA\">"+
"<font color=\"White\" face=\"tahoma, verdana\" size=\"2\">"+
"Time: <input type=\"text\" name=\"time\" value=\""+dt2tmstr(dt_datetime)+
"\" size=\"8\" maxlength=\"8\"></font></td></tr>\n</form>\n" +
"</table>\n" +
"</tr>\n</td>\n</table>\n" +
"</body>\n" +
"</html>\n";
var vWinCal = window.open("", "Calendar",
"width=200,height=250,status=no,resizable=yes,top=200,left=200");
vWinCal.opener = self;
var calc_doc = vWinCal.document;
calc_doc.write (str_buffer);
calc_doc.close();
}
// datetime parsing and formatting routimes. modify them if you wish other datetime format
function str2dt (str_datetime) {
var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/;
if (!re_date.exec(str_datetime))
return alert("Invalid Datetime format: "+ str_datetime);
return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1, RegExp.$4, RegExp.$5, RegExp.$6));
}
function dt2dtstr (dt_datetime) {
return (new String (
dt_datetime.getDate()+"-"+(dt_datetime.getMonth()+1)+"-"+dt_datetime.getFullYear()+" "));
}
function dt2tmstr (dt_datetime) {
return (new String (
dt_datetime.getHours()+":"+dt_datetime.getMinutes()+":"+dt_datetime.getSeconds()));
}
Thanks for everyones help. Cheers, J I'm using the following javascript for my main navigation. Quote: var mastertabvar=new Object() mastertabvar.baseopacity=0 mastertabvar.browserdetect="" function showsubmenu(masterid, id){ if (typeof highlighting!="undefined") clearInterval(highlighting) submenuobject=document.getElementById(id) mastertabvar.browserdetect=submenuobject.filters? "ie" : typeof submenuobject.style.MozOpacity=="string"? "mozilla" : "" hidesubmenus(mastertabvar[masterid]) submenuobject.style.display="block" instantset(mastertabvar.baseopacity) highlighting=setInterval("gradualfade(submenuobject)",50) } function hidesubmenus(submenuarray){ for (var i=0; i<submenuarray.length; i++) document.getElementById(submenuarray[i]).style.display="none" } function instantset(degree){ if (mastertabvar.browserdetect=="mozilla") submenuobject.style.MozOpacity=degree/0 else if (mastertabvar.browserdetect=="ie") submenuobject.filters.alpha.opacity=degree } function gradualfade(cur2){ if (mastertabvar.browserdetect=="mozilla" && cur2.style.MozOpacity<1) cur2.style.MozOpacity=Math.min(parseFloat(cur2.style.MozOpacity)+0.1, 0.99) else if (mastertabvar.browserdetect=="ie" && cur2.filters.alpha.opacity<100) cur2.filters.alpha.opacity+=10 else if (typeof highlighting!="undefined") //fading animation over clearInterval(highlighting) } function initalizetab(tabid){ mastertabvar[tabid]=new Array() var menuitems=document.getElementById(tabid).getElementsByTagName("li") for (var i=0; i<menuitems.length; i++){ if (menuitems[i].getAttribute("rel")){ menuitems[i].setAttribute("rev", tabid) //associate this submenu with main tab mastertabvar[tabid][mastertabvar[tabid].length]=menuitems[i].getAttribute("rel") //store ids of submenus of tab menu if (menuitems[i].className=="selected") showsubmenu(tabid, menuitems[i].getAttribute("rel")) menuitems[i].getElementsByTagName("a")[0].onmouseover=function(){ showsubmenu(this.parentNode.getAttribute("rev"), this.parentNode.getAttribute("rel")) } } } } Can someone please show me how to add an ".onmouseout" function so that when a user rolls out of any of the top level navigation the submenu defaults to the navigation for the current page? http://www.mohrdesigns.com Thanks in advance for any help! Hello, I need your help. For one reason or another, I have a textarea with text in it, however, when I call it back and store it in var, it seems to strip all the spaces. [ID = "COMMENTS"] Ie. of what's in the textarea: ---------------------------------------------- Apples are red Oranges are orange Pears are green Bananas are yellow var comments = document.getElementById("comments").value returns: Apples are red Oranges are orange Pears are green Bananas are yellow How could this be re-written such that the spaces in between the text aren't ignored? Much thanks and appreciation for everyones help. Cheers J Hello, I need your help. How could I write a functional if statement such that it would check against a series of various word strings seperated by commas ie. function check(y) { //y = "FOR INPUT" var string_to_check = FOR INPUT, FOR ACTION, FOR APPROVAL if (y isin string_to_check) { return 1 } } Thanks for everyones help. J Ok, just wanted to throw this out there to see if it is worth regexing a text field for user input. Since JS is client side and the script I am using is not accessing the server for anything, do I need to regex the input text field of my script? Is there any way a cracker can use this for evil? I'm adding a text field named city. I'm trying to validate it using MM_validateForm() however I'm not sure how to add it into the javascript. Can anyone help out? Code: <script type="text/javascript">
<!--
function MM_validateForm() { //v4.0
if (document.getElementById){
var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
} else if (test!='R') { num = parseFloat(val);
if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
min=test.substring(8,p); max=test.substring(p+1);
if (num<min || max<num) errors+='- '+nm+' must contain the number '+min+'.\n';
} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
} if (errors) alert('The following error(s) occurred:\n'+errors);
document.MM_returnValue = (errors == '');
} }
//-->
</script>
Code: <input name="submit" type="submit" class="submit-button" onclick="MM_validateForm('name','','R','email','','RisEmail','answer','','RinRange4:4','city','message','','R');return document.MM_returnValue" value="Submit" />
Hi Chaps, I have a PHP form with one input and a button. A jQuery script ('loading' animated gif) is triggered on the click of the submit button. I also have a Spry Validation field linked to the input. At the moment, if the validation is triggered, the animated gif continues and won't stop. The furthest I've managed to get with it, is to click the validation message to stop the animation, but what I'm really after is to stop the animation when the validation is visible/triggered, but I can't find a suitable Event. Code: <script type="text/javascript">
$(function() {
$("#button_download")
.click(function() {
})
.throbber();
$("#sprytextfield1")
.click(function(sprytextfield1) {
$.throbberHide();
})
});
</script>
If someone can point me in the right direction, that would be sweet. |
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