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JavaScript - Javascript Tutorials??
Hello all...
I've been trying to learn to write javascript for awhile now. I've been getting better, but I'd still consider myself a novice. I've tried several things. 1. The W3schools tutorials 2. Lynda.com which has some good examples, but the instructor really didn't explain why to do certain things, which really prevented me from understanding it....or maybe I'm just dumb 3. I actually took a college class. On day one, the professor mentioned that we probably wouldn't need to be able to write javascript from scratch, instead we should just be able to update scripts we find online.....which, I guess could be true, but I'd really want to be able write my own. Is the professor right? I'm looking for a couple of things. First, I was wondering if there's a better tutorial than W3schools or even something like lynda.com? Secondly, I was curious if there's a site that might have javascript practices. By that I mean, something that tells you what type of script you need to write, but doesn't give you step by step instructions on how to do so. Like I said, I don't have to write very many scripts at work, so if there's something I can do to get better, I would love to do it. Thanks. Sorry for the long post. My biggest problem is I at Similar TutorialsHey guys, i'm trying to incorporate cookies with the website i'm working on. I've looked at tutorials where they just hand you the code and say "get on with it", this leaves me in the lurch while trying to debug it... so the question is are there any good javascript cookie tutorials that will "explain what the heck this does?" Thanks Al. I am looking for tutorials on creating a slideshow with thumbnails, but i need one where i can put the mouse over the thumbnail depending on the direction i am the mouse the thumbnail will move left or right thanks Hey I'm new to programming (actually news not even the word for it) and I need some help. I plan on going to college to study game development and programming but I have no idea how to program. If you could post some links to beginner tutorials or even type one up for me, it would be greatly appreciated. Oh, and I'm planning on trying Java first, but if you have another suggestion, it would help. Also, I have blender and have made simple games on it, but I don't really like the 3D modelling concept. I wanted to try coding now so, thanks in advance! P.S. I don't even know how to oped up Java... I downloaded Java SE DK 6u15 (I do know what it stands for though!) but I'm not sure if I did it right or not. So basically a 100% complete tutorial from downloading to... whatever the last step is. Thanks! I've done LOTS of Googling on this subject. I can write cookies beautifully to '[other data]; path=/Stats' but I can't figure out how on EARTH to read from it. How do I access the data there? If I just say path=/ then it will read beautifully, but I need to be able to have different paths for what I want this to ultimately do.
I want to have another go at Javascript. I have several books on the subject but I find that my eyesight is a major problem. Therefore I want to try an on-line solution, preferably free. I have Googled, but there are so many that I am almost dizzy with the choices. Perhaps someone could recommend one. Not too fussy visually. My knowledge is VERY basic. Frank Hello! I am trying to find a script that allows you to open multiple browser tabs and then close each of those tabs, either one by one or all at once. Does anyone know how to do this please? Thanks so much for your help. Does anyone know how to make URL links that use Javascript still work when users have Javascript disabled on their browser? The only reason I'm using JS on a URL is because my link opens a PDF file, and I'm forcing it not to cache so users have the latest version. I tried the <script><noscript> tags, but I'm not sure if I'm using it correctly, as my URL completely disappears. Below is my HTML/Javascript code: <p class="download"> <script type="text/javascript">document.write("<span style=\"text-decoration: underline;\"><a href=\"javascript:void(0);\" onclick=\"window.open( 'http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf?nocache='+ Math.floor( Math.random()*11 ) );\" >The Child Magazines Media Kit</a></span> (PDF 1 MB) ");</script> <noscript><span style="text-decoration: underline;"><a href="http://www.webchild.com.au/mediakit/Direct_Media_Kit_Web.pdf" >The Child Magazines Media Kit</a></span> (PDF 1 MB)</noscript> </p> Thanks for any help, Michael Hi Guys, I am new at JavaScript and start to do some tutorials.What I am trying to do here is prompting user to input a name and if the name was valid the page(document) will display with all objects like the button.But if user enter a wrong name then the button will be disabled! I create the following code but it did not work <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>New Web Project</title> <script language="JavaScript" type=""> function changeColor(){ document.bgColor = "Gray"; } </script> </head> <body> <script language="JavaScript" type="text/javascript"> var person = ""; person = prompt('What is Your Name:'); if (person == "Foo") { document.write("<h1 />Welcome " + person); document.bgColor = "Yellow"; } else { document.write("<h1 />Access Denied!!!!"); document.bgColor = "Red"; document.getElementById("gree").disabled = true; } </script> <div> <p/><input id="gree" type="button" value="Gray " onClick="changeColor();"> </div> </body> </html> as you can see I used the: document.getElementById("gree").disabled = true; but it did not work , could you please give an idea how I can solve this problem? Thanks Hi, I have the following code snippet: test.html ====== <script language="javascript" type="text/javascript"> var testVariable = "test"; </script> <script language="javascript" type="text/javascript" src="test.js"> </script> test.js ===== var testVariable = window.top.testVariable; In firefox, I'm able to access testvariable defined within test.html in test.js. But in chrome, test.js couldnot get the window.top.testVariable field defined in test.html. Can any one please let me know how i can make it work in chrome?. Am i missing something here?. I got an index.php Code:
<html>
<form action="bacakomik.php" method='post'>
<select name="kodekomik">
<option value='../komik1/|23'>Judul Komik1</option>
<option value="../komik2/|20">Judul Komik2</option>
<option value="../komik3/|10">Juduk Komik3</option>
<option value="../komik4/|20">Judul Komik4</option>
</select>
<input type="submit" />
</form>
<?php
echo ('<select>');
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
echo ('</select>');
?>
</html>
As you can see, each of the option brings specific value "../komik1/|23" komik1 is a directory | is a delimiter 23 is the pages in one chapter and can be considered also as how many images are there on a specific directory This is my bacakomik.php Code: <?php
$dirkomik = $_POST['kodekomik'];
$exploded = explode("|", $dirkomik);
echo ($exploded[0]); //picture directory
echo ("<br>");
echo ($exploded[1]); //total page in the comic
$pagecount = (int)$exploded[1];
//Take last posted value, process it right away
echo ('<FORM name="guideform"> ');
echo ('<select name="guidelinks">');
$i=1;
do {
echo ('<option value= "'.$i.'">'.'Page '.$i.'</option>');
$i= $i+1;
}while($i <= $pagecount); //Printing option and select
echo ("</select>");
?>
<input type="button" name="go" value="Go!" onClick="document.getElementById('im').src=document.guideform.guidelinks.options[document.guideform.guidelinks.selectedIndex].value+'.png';"> </FORM>
<img src="img0.jpg" id="im">
With the current code on bacakomik.php, I only can change the img src of id "im" in the same directory only. What I want is that the Javascript could "add" the "$exploded[0]" variable so that the picture can be loaded from different directory. Anyone can do this? I believe that the fix should be somewhere on input tag inside OnClick, or do you know where? Anyway, I found this on the net http://p2p.wrox.com/php-faqs/11606-q...avascript.html Please help me to those who can... Hi Guys I am trying to modify the functionality of my page. I want to be able to activate this piece of code using another javascript function. This is the code I want to activate: Code: <script type="text/javascript"><!--
$('#button-cart').bind('click', function() {
$.ajax({
url: 'index.php?route=checkout/cart/update',
type: 'post',
data: $('.product-info input[type=\'text\'], .product-info input[type=\'hidden\'], .product-info input[type=\'radio\']:checked, .product-info input[type=\'checkbox\']:checked, .product-info select, .product-info textarea, .date_data input[type=\'text\']'),
dataType: 'json',
success: function(json) {
$('.success, .warning, .attention, information, .error').remove();
if (json['error']) {
if (json['error']['warning']) {
$('#notification').html('<div class="warning" style="display: none;">' + json['error']['warning'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.warning').fadeIn('slow');
}
for (i in json['error']) {
$('#option-' + i).after('<span class="error">' + json['error'][i] + '</span>');
}
}
if (json['success']) {
$('#notification').html('<div class="success" style="display: none;">' + json['success'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
$('.success').fadeIn('slow');
$('#cart_total').html(json['total']);
$('html, body').animate({ scrollTop: 0 }, 'slow');
}
}
});
});
//--></script>
And this is how I want the format of the function to be: function testsession() { if there is a session called 'hiredate' { activate the script above } else { var el = document.getElementById("product_data"); } } I just dont know how to write this in javascript Could you help me if possible please I want to insert this js snippet Code: function addText(smiley) {
document.getElementById('message').value += " " + smiley + " ";
document.getElementById('message').focus();
return false;
}
to a loaded iframe with name&id chtifrm. I can access it & change embed something in its html via using something like: Code: $(parent.chtifrm.document.body).append('<div id=\"smly\" style=\"cursor:pointer;float:left;top:200px;display:none;position:absolute;\"><\/div>');
.... Code: parent.chtifrm.document.getElementById('chatbox_option_disco').style.display == 'none'
but how do I insert js in the head of loaded iframe? Hey, I've got to make the values of some textboxes change the co-ordinates of my sprite on a canvas and havent a clue on how to do it, Here is my form with the two textboxes and submit button: <form> x: <input type="text" name="x" /><br /> y: <input type="text" name:"y" /><br /> <input type="submit" value="Submit"/><br /> </form> And i need it so that they change the values of these: //this shows where my sprite will start on the canvas var block_x; var block_y; searched the internet for hours and cant really find anything i understand or works. any help is much appreciated All -- I have a JavaScript config file called gameSetting.js which contains a bunch of variables which configures a particular game. I also have a shared JavaScript library which uses the variables in gameSetting.js, which I include like so: <script type="text/javascript" src="gameSetting.js" ></script> <script type="text/javascript" src="gameLibrary.js" ></script> In gameSetting.js I have: $(document).ready(function() { // call some functions / classes in gameLibrary.js } in Firefox, Safari, and Chrome, this works fine. However, in IE, when it's parsing gameSetting.js, it complains that the functions that live in gameLibrary.js aren't defined. When it gets to parsing gameLibrary.js, the variables in gameSetting.js are reported as not being defined. I've tried dynamically bootstrapping the gameLibrary file using this function in document.ready for dynamic load... $.getScript("gameLibrary.js"); However, the same problem still happens in IE, where when it parses the files individually it's not taking into context the file/variables that came before, so it's not an out of load order problem. My options a 1) collapsing all the functions in gameLibrary.js and variables in gameSetting.js into one file. However, this is not practical because this is dealing with literally hundreds of games, and having a gameLibrary.js in ONE location for ONE update is what makes most logical sense. 2) figure out a way to get this to work where variables in file1 are accessible to file2 in IE (as it seems they are in other browsers). jQuery seems to be able to have multiple plugins that all refer to the based jQuery-1.3.2.js, so I know there is a way to get this to work. Help appreciated. Nero I wrote a log function that took note of various function calls. Thinking that functions are first class objects, and objects have properties, I made the name of each logged function a property of that function, e.g., brightenInnerPara.name = "brightenInnerPara"; Every browser I tried (Firefox, MSIE, Opera, Chrome, Safari) accepted the assignment, no problem. In Firefox and MSIE, the result was what I wanted: brightenInnerPara.name == "brightenInnerPara" But in the others, the result was: brightenInnerPara.name == null Question 1. Which Javascript is correct here? I favor Firefox and MSIE, not merely because they were willing to give me what I wanted, but also because it makes no sense to accept an assignment statement without throwing an error and then give it a null semantics, like Chrome, Opera, and Safari did. I found a workaround, using assignments like this: brightenInnerPara.prototype.name = "brightenInnerPara"; To my surprise, that worked in every browser. But I don't know why. It seems that such assignments are enough to cause each function to have its own distinct prototype. Question 2. Just how inefficient is my workaround, and why does it work? I have a javascript file called ad.js inside looks like this Code: var ADPLACER_PATH = "http://www.mywebsite.com/";
var PREROLL_ENABLED = 1;
var MIDROLL_ENABLED = 0;
var PREROLL_ZONE_ID = 0;
var MIDROLL_ZONE_ID = 0;
var PREROLL_TIMEOUT_IN = 0;
var PREROLL_TIMEOUT_OUT = 35000;
var PREROLLCLOSEBUTTON_TIMEIN = 0;
var MIDROLL_TIMEOUT_IN = 0;
var MIDROLL_TIMEOUT_OUT = 3000000;
var PREROLL_ONSHOW = function(C){
setTimeout(function(){document.getElementById('adplacer_prerollClose'+C).onclick()}, PREROLL_TIMEOUT_OUT);
}
var PREROLL_ONHIDE = function(){}
document.write ("<scr"+"ipt type='text/javascript' src='"+ADPLACER_PATH+"adss.js'><\/scr"+"ipt>");
It places an ad over a video on my site. I know I can add the .js to my site by adding this <script type="text/javascript" src="ad.js"></script> to my head But what do I need to add to my page to make it appear? Do I have to put the video between a DIV? Can someone let me know what I need to do to make it appear? thanks can anybody help me with java script on my website http://wejustcan.com in The Design Contest Section I need help to make a Browse File othen i need a submit button to submit the design name and email to my email
i really need an expert definition, please!! thank you, you are to SWEET!!
This is a basic question, in the code below if I inputed 2 how can I echo the word hello? Code: <HTML>
<HEAD>
<TITLE>Test Input</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function testResults (form) {
var TestVar = form.inputbox.value;
if(TestVar!=2)
{
document.write("please enter 2");
}
}
</SCRIPT>
</HEAD>
<BODY>
<FORM NAME="myform" ACTION="val4.php" METHOD="post">Enter something in the box: <BR>
<INPUT TYPE="text" NAME="inputbox" VALUE=""><P>
<INPUT TYPE="submit" NAME="button" Value="Click" onClick="testResults(this.form)">
</FORM>
<?php
if (isset($_POST['button']))
{
echo "hello you inputed the right value";
}
?>
</BODY>
</HTML>
All, I have the following bit of CSS: Code: ul li{background:url(images/marker.jpg) top left no-repeat; background-position:0 3px; margin:0; padding-left:13px; }
So basically on my page whenever there is a bullet it displays this marker. I put in the following code to make the bullet become clickable: Code: <li onclick="javascript:showdesc('This is info about bulk delivery', 'bulk');">Bulk Delivery</li><div id="bulk"></div>
I then have the following javascript to handle that: Code: <script type="text/javascript">
function showdesc(desc, type){
if(type=="bulk"){
document.getElementById("bulk").innerHTML = desc;
}
}
</script>
Is there a way to incorporate CSS into the JS that will allow me to use a different image (down arrow) and make that clickable to then make the <div id="bulk"></div> not have the desc in it anymore? Thanks in advance! |
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