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JavaScript - Newbie Question Javascript Vs Java, Which One Should I Use?
Not much programming experience, but some C++ and Python. I would like to make a web page that
1. flashes and image for 1 second 2. flashes a a pair of images for 1 second 3. displays an image and waits 4. Wait for a certain correct keystroke to be entered. 5. Repeat 1-4 a few hundred times. ^The above would iterate through a loop, say of 300 counts, and sub-iterate through an array of images, say 30, going through all 30 images 10 times for example. Oh, and the array elements would be displayed in random order. Also, I would like to keep track of errors (wrong keystroke) and time it took to enter correct keystroke. I would prefer that this webpage work on the iphone, even older ones. Java is limited on iphone? I tried playing a Java chess game and had no luck on iphone. So, would I be able to do this using Javascript? If not, Java would be best? As I said, I would prefer iphone compatibility, but it is not required. I just want to know which one I should use before I bury my nose in a book about programming Java or Javascript. Similar TutorialsHi, I am just beginning out with Javascript and trying to complete a simple login page. Clicking on the Login button should bring up a message 'Access authorised' or 'Access denied' in the 'output' div of the page. Unfortunately only 'Access Denied' displays, even if the password entered is correct. There are no messages displayed in the Error Console. Any advice greatly appreciated! Code: <html>
<head>
<title>Function Example</title>
<script language="javascript" type="text/javascript">
function isAccessAuthorised(enteredPassword)
{
var result;
if(enteredPassword=="password")
{
result=true;
}
else
{
result=false;
}
return result;
}
function buttonClicked()
{
var isAuthorised = isAccessAuthorised("enteredPassword").value;
if(isAuthorised==true)
{
document.getElementById("output").innerHTML=<p>Access authorised</p>;
}
else
{
document.getElementById("output").innerHTML=<p>Access denied</p>;
}
}
</script>
</head>
<body>
<form>
<input type="text" id="username" /> <br/>
<input type="text" id="enteredPassword" /> <br/>
<input type="button" onClick="buttonClicked()" value="Login">
</form>
<div id="output">
</div>
</body>
</html>
hello, is there a date format for an existing date? all I see is a var d = new Date(); but i need to format an existing date? thanks! hello all I'm trying to get the textarea text editor plugin CKEditor to work on my project. I'm using cakephp and following this simple tutorial amilan.wordpress.com/2010/01/28/ckeditor-integration-in-cakephp which basically tells that once I've included jquery and ckeditor then all I need to do to create a ckeditor textarea is: echo $form->textarea('content', array('id'=>'content','class'=>'ckeditor')); That all works fine except I can't resize the textarea at all. I've tried with css and putting 'cols' and 'rows' in there but to no avail. When I remove the ckeditor class it does work so I think it's something to do with the config. There is a config.js file which you can fiddle with but I don't know enough to know what to do to alter the height and width. Can anyone help me? The relevant bit of the documentation is http://docs.cksource.com/CKEditor_3....Configurations thanks if anyone can help me Hi guys, i am trying to work with google maps api my issue is with creating an array of markers count the number of marker, and then if it equal two, issue an error msg. i wrote some code, but that doesn't work obviously. and my question is how do i write that code in javascript ? GEvent.addListener(map, 'click', function (overlay, latlng) { if (placeMarker.length < 2) { pendingLatLng = latlng; setTimeout("settleClick()", 225) } else { message("You can only select 2 points."); } }); a sample click event which looks like the line below does work. what am i doing wrong ?: google.maps.event.addListener(map, 'click', function (event) {placeMarker(event.latLng); }) Hi all, I have finished a program for an assigment the varibles num1,num2,num3,num4 are the final result of the calulation that i needed to preform. I can document.write these no problem. I just read the assigment and I have to create an unordered list with bullets from the results The only way i could think of doing it was to create variables so I can enter them in the list,can I do that? [var num1 =("You were born on a " + weekday[usersInputDate.getDay()]+'.','<br />'); var num2 =("You are "+(ageofUser.toFixed(2))+ " years old.<br />"); var num3 =("You are "+(usersAgeinDays.toFixed(0))+" days old.<br />"); var num4=("You have lived "+(usersExLife.toFixed(0))+" % of an average lifespan.<br />"); <ul> <li> ('num1') </li> <li> ('num2') </li> <li> ('num3') </li> <li> ('num4') </li> </ul>] How do i write this to the screen as [<li> num1 </li>] doesnt work neither does [<li> 'num1'</li>]. Does the <ul> function only read the string entered or can it run the variable assigment ? Thanks all Shayne Darcy. Help... I have a quick Java Script question... At the following page, I am asking people to copy and paste a Sponsor ID into our registration form that sits in an 'iframe'. Code: http://www.agelessoverview.com/beta/order-now.html People are screwing this up and even changing the number... So here is my question... is there a small snippet of java script I can use in the source page or iframe that will automatically fill in the Sponsoring Distributor ID:, while at the same time, blocking the input from being changed and also block the 'I don't have a sponsor' radio button? That's it! Thank you, you magicians of code. Respectfully, StealthMarketer hey guys " I have question about writing a java script code equivalent to the following figure : I've written the code like this , <html> <body> <script type="text/javascript"> var x; x = 12; while (x != 0) { document.write(" x = " + x +"<BR>"); x = x - 3; } document.write("DONE"); </script> </body> </html> is my answer right or wrong ?? < Hello, I am trying to create simple Java Script form that will open a URL based on the contents entered into the form. The form shall consist of only a text box and submit button. A user will enter XXXX in the text box and click submit. The form would then load a URL consisting of http://www.company.com/XXXX I know this can be done because I had a code like this a few years back but I have lost it. I've been searching for over an hour, trying to figure this out. Any help would be grately appreciated. Thanks! Hello, I'm in the process of getting a better understanding of javascript (instead of just copying and pasting JQuery script onto my site). So I have a(dumb?) question. Can I name a var what ever I want? For example, var car_name("Ford Escape"); Or am I misunderstanding this? 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> Hi Everyone I'm learning Javascript with varying degree's of success but am very much in the early phase. My question/problem is this: [ICODE]<!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> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <script language="javascript" type="text/javascript"> var degFahren = new Array(212, "string data", -459.67); var degCent = new Array(); var loopCounter; for(loopcounter =0; loopCounter <= 2; loopCounter++){ if(isNaN(degFahren[loopCounter])){ alert("Data " + degFahren[loopCounter] + " at array index " + loopCounter + " is invalid"); continue; } degcent[loopCounter] = 5/9 * (degFahren[loopCounter] -32); } for (loopCounter =2; loopCounter >=0; loopCounter --){ document.write("Value " + loopCounter + " was " + degFahren[loopCounter] + " degrees Fahrenheit"); document.write(" which is " + degCent[loopCounter] + " degrees centigrade<br />"); } </script> </body> </html> /ICODE] The following code does not return any errors in my browser but I'm confused since I'm sure I should be seeing an alert box telling me that there is invalid data entered bu this doesn't happen, also as far as I can make out I should only be receiving an error for the 2nd loop but there seem to be an error message returned for all 3 loops?? This is all possibly correct but I'm learning from a book and I have no-one to ask these mundane questions to. Any help would be greatly received. Sara This is what I am aiming for. I want to be able to click on a word that would then write text in a specified area. This is what I came up with but it writes it at the top of the page and only for a moment then disappears.... These are my clickable words Code: <a href="#textarea" onClick="MathHomework('W2')">Week 2</a>
<a href="#textarea" onClick="MathHomework('W3')">Week 3</a>
the anchor named 'textarea' is where I want the output to be written which is placed on my html page. This is my newbie script Code: <script type="text/javascript">
function MathHomework(week) {
if (week == "W2")
document.write("<p>Review Chapter Twelve</p>");
else if (week == "W3")
document.write("<p>Final Chapter Review Test</p>");
}
</script>
<a name="textarea"> (text area for javascript output)</a>
so is my onclick syntax wrong maybe? and yes I have read rule#5 and I am trying to understand my mistakes. Thank you in advance Hi! Im new to the world of javascript, so bare with me. It might be a stupid question but i got a input form, i know how to get the data in but i need to single out one of the numbers. the input looks like: xxxxxx-xxxx I've tried almost everything that i can think of... A nudge in the right direction would be appreciated. Thinking in Objects 4 objects w/constructors/overloads min 3 properties on each min 3 methods total was just wondering if anyone had any good links or tutorials to get me started on my first javascript assignment I've had several problems with document.getElementById() and haven't been able to find a reason for this. I've searched these forums and I'm sorry if I've still managed to miss if there's an answer to this, as it seems to me to be a basic question. When I use getElementById() it keeps returning as 'undefined' in both FF och IE. I've had to use getElementsByName() instead, and since I only have one element, I have to write element[0] to make it work which seems rather redundant. This is parts of my JS code: Code: var postName = document.getElementsByName("postName"); //getElementById doesn't work here
var postText = document.getElementsByName("postText"); //...nor here.
if (postName[0].value == "" && postText[0].value == "")
{
document.getElementById('feedback').innerHTML = "Some text."; //For some stupid reason getElementById works here!
}
And the HTML looks somewhat like this: Code: <div class="addName" id="addName"> <input type="text" name="postName" id="postName" class="textBox"></input> </div> <div class="addText" id="addText"> <textarea class="textarea" name="post" id="postText"></textarea> </div> <div class="feedback" id="feedback"></div> I don't see why it wouldn't work, but this isn't the only time it's happened so I must be missing something. Anyone who can enlighten me as to what that is? Hi, 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 I have yet to have my ah-ha moment with Javascript but I think its coming soon. there are small things that seem to be baffling me and Im hoping posting to the forums to get help from people of limitless wisdom. What exactly does the "|" mean in this code? or I should say what does it do? Code: document.template.Aprod_string.value = document.template.Aprod_string.value + "|" + string_recode(Aprod_array) ; Hi I'm trying to get a slideshow working but the timings are all over the place. I can make it loop through once, neatly, but thereafter the timings seem to out - I have a loop set up to run five times. I think this is because the function is incrementing the delay values or something along those lines (I know there's a neater way to write this but I'm just starting out). Code: function slideWinder () {
var x = 1
for (var x = 1; x < 5; x++) {
$('#slideone').delay(0).fadeIn(0).delay(2000).fadeOut(400);
$('#slidetwo').delay(2000).fadeIn(400).delay(2000).fadeOut(400);
$('#slidethree').delay(4000).fadeIn(400).delay(2000).fadeOut(400);
$('#slidefour').delay(6000).fadeIn(400).delay(2000).fadeOut(400);
$('#slidefive').delay(8000).fadeIn(400).delay(2000).fadeOut(400);
$('#slidesix').delay(10000).fadeIn(400).delay(2000).fadeOut(400);
}
}
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