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JavaScript - Events And Buttons
hello,
Im trying to write a program when the user clicks on the button, the textbox should display "how are you ". This is what I tried : <html> <head> <title>"Click"</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body> <p> <input name="text1" type="text" id="text1" value="textbox 1" onFocus="this.style.background ='yellow'" onBlur="this.style.background='white'"> </p> <p> <input name="text2" type="text" id="text2" value="textbox 2" onFocus="this.style.background = 'yellow'" onBlur="this.style.background='white'"> </p> <p> <button onclick="textbox1.value="how are you">Click Me!</button> </p> </body> </html> Similar TutorialsHi all, I hope that someone can help me with this strange problem I have here. I have some script which changes a button and changes the onclick event. The strange thing is that although it is changing it. All the events have the same parameter even though my code is giving each button's onclick event it's own unique parameter. Here's my Code. Code: var AllocPeople = window.opener.document.getElementById('AllocPeople');
if(AllocPeople.value.length > 0)
{
var people = AllocPeople.value.split(",");
var Controls = new Array();
for(var P in people)
{
var id = people[P];
Controls[P] = document.getElementById('bt_AP_'+id);
Controls[P].innerHTML = "Deallocate";
Controls[P].onclick = function() {Remove_Player(id)};
}
}
Thanking you all in advance. I am using a freebie script that changes css elements using onClick when you hit a button. I have 12 choices I want to add, and don't want 12 buttons, but rather a dropdown list. 2 button examples (and js code) is: <input onclick="changecss('li','background','url(images/list_02.jpg) no-repeat 10.2em .12em')" value="Change to BG 2" type="button" /> <input onclick="changecss('li','background','url(images/list_03.jpg) no-repeat 10.2em .12em')" value="Change to BG 3" type="button" /> How do I convert this to a SELECT list?? Thank you! This is what I have: http://page-test.co.uk/js-test.html ..and it works exactly how I want it to, but I need it to work by doing these two things: (a) If you see in the change_button function, I have hard coded the 'name_can_vary' name element. I need to do it so this isn't hard coded (so it can work on any page/form). (b) I don't want to change any of the HTML, and I only want to change the code used in the change_button function (otherwise I will need to change many pages). Thanks in advance. i have a link that references: <a href="My_Video.asx">video</a>. when you click, video will open in the "windows media player" and the parent window goes blank. how can i prevent the parent window from going blank? thank you for help julio i have a checkbox: Code: <input type="checkbox" id="my_checkbox" name="option2" value="Check" checked>Check i want to add an event to it so that i do something to a dom element when it is checked and when it is not checked.What is the event and how can i get its status? I am having trouble understanding why this does not work? Code: <HTML>
<HEAD>
<TITLE>Event Loops</TITLE>
<SCRIPT TYPE="text/javascript">
function seturl(a,b,c,d,e)
{
this[0] = a;
this[1] = b;
this[2] = c;
this[3] = d;
this[4] = e;
}
function selectPage(list) {
var page = Math.floor(Math.random()*4);
winow.open(list[page],"Random_Page");
}
choices = seturl("http://www.google.com,
"http://www.yahoo.com,
"http://www.youtube.com,
"http://www.bing.com,
"http://www.xbox.com");
</SCRIPT>
</HEAD>
<BODY onLoad="selectPage(choices);">
<H1>Please Wait...</H1>
</BODY>
</HTML>
Hi guys, I'm a newbie so bear with me please. I downloaded this calendar which is now working great: JavaScript Calendar - Digital Christian Design (http://www.javascriptkit.com). Does anyone know how to change the date format from mm/dd/yyyy to dd/mm/yyyy? Also, is it possible to have links on such a calendar? I.e. in the event descriptions? Thanks. I was testing a required entry form, and i'm stuck. Code: <html>
<head>
<script type="text/javascript">
function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
{
alert(alerttxt);return false;
}
else
{
return true;
}
}
}
function validate_form(thisform)
{
with (thisform)
{
if (validate_required(email,"Username must be filled out!")==false)
{username.focus();return false;}
}
}
</script>
</head>
<body>
<form action="submit.htm" onsubmit="return validate_form(this)" method="post">
Username: <input type="text" name="username" size="20">
<input type="submit" value="Submit">
</form>
</body>
</html>
i have this so far. i want to add a password part. i know i would take Code: Password: <input type="text" name="password" size="20"> and put it underneath the username part in the codes., but i don't know to do the rest, with the error message poping up. With input box if you type something and refresh the page, the previous words that you typed in will be filtered and be display in a scroll down form in which you can click it. My question is, when I click the input type is it possible to scroll down, and display values that comes from a database? It should also filter the scroll down results. If it's possible I don't know how to do it. I tried googling but I can't find an explanation on how to do it. Thanks. <input type="text" value="" onclick=""> Hi I have a requirement....I have a timer on a page. If the user leave the page (mouse goes off of that page) the timer starts and continues...and when the user comes into that page(mouse over that page) the timer goes off/STOP....Is this can be done?? using javascript??? pls help... I sometimes see that some people use this expression: event = event || window.event Why people need to do this? What does it mean? Hi Guys I have been trying to implement a way of using `onclick` to fill out a form field, with a Value assigned by a clickable rollover image. So i have a image rollover of a PC, i give the PC a Value? ID? of `PC No34` When the image is clicked it updates its Value of PC No34 to a Form text field which is named `pcid` the Form is on the same page as the PC rollover image. I have been trying most of the day but not getting it. Pls help Thanks for any help with this Willo i have placed a text box with onclick and onblur event. onclick shows contents(links) of a div tag below it and onblur hides the div basically it was a jquery based drop down menu but due to some problem I need to avoid jquery. Now the problem happens when a link of div tag is clicked. The link does not work due to onblur event on the textbox. Any suggestion? Quote: <input type="text" style="text-transform: capitalize;" value="" class="abd_txtfld" name="loc" id="loc" onclick="gettabcontentSearch('','')" onblur="hide()"/> <div id="cityddsearch" class="select_citydd" style="position: absolute; margin-top: 2px; left: 5px; display: none;"> <ul> <li><a href='../link1.asp'>link1</a></li> <li><a href='../link2.asp'>link2</a></li> <li><a href='../link3.asp'>link3</a></li> </ul> </div> Hi, I have a func1() called when mouseOver even fired. And while the func1() is executing if mouseOut event fires I want to exit the func1(). If anybody knows how to do this please let me know. Thanks in the attached photos you have a wheel of colors and a corresponding cascading menu. I'd like to just be able to onmouseover one of the 8 colored polygons within the wheel, have it replace the wheel with one of 8 new images depending on which polygon the mouse is over, and at the same time, light up the corresponding image on the cascading company menu group. is this possible with javascript? links to a tutorial? I've had some experience with replacing one image with another onmouseover, but not with breaking up one image into 8 parts, each with a separate image replacement. I could see how you could perform this with only 4 different colored polygons, but not 8. I need help with making an Image onMouseOver event and onMouseOut event without using <a> tags and inline code in the HTML. I know how to do it with <a> tags and inline already. Not sure how to go about doing this without <a> tags and inline. If someone could give me an example of how to do this using strictly Javascript only, I would greatly appreciate the help. I am also planning on having the Images within a table and assigning functions that execute when the mouse is over the image within the cell and when the mouse is off the image in the cell. Hi people, I've been asked to build a rotative news/banner switcher. Like you would see on news channel on TV at the bottom. I am using setInterval() to call an xajax method every X seconds. Works great. I keep trace of an array index and return the next content everytime it is called. (Not forgeting to roll up the index (or go back to 0 if I reach the end)) So for so good. But I was asked to add mouse events to this. The ability to stop the rolling interval onmouseover and resume onmouseout. Same goes with a pause/play button. So I kill the interval using clearInterval(), its stops. onmouseout resumes the first timer AND Creates a new one so it doubles the rotations. I tried various solutions found on google but none of them works at all. I need help to properly start/stop pause/resume a javascript timer. now to the code. I'm using a little xajax here but my problem is from javascript. init() gets called on body onload() Code: function init(){
$xAjax_objResponse = initXajaxObject();
//time script to refresh the banner
//I also declare the timer variable there.
$xAjax_objResponse->script("var timerMarquise; xajax_refreshMarquise();");
//Starts the timer
$xAjax_objResponse->script(getMarquisePlayScript());
return $xAjax_objResponse;
}
refreshMarquise() sets the banner content Code: function refreshMarquise(){
$xAjax_objResponse = initXajaxObject();
$oRedaction = unserialize($_SESSION["creation2"]["redact"]["obj"]); //Session object
$oIdee = $oRedaction->getNextIdee(); //Gets the next object containing the info to show
$innerMarquise = getMarquiseInner($oIdee); //builds the html to show the content
$xAjax_objResponse->assign("redaction_marquise", "innerHTML", $innerMarquise); //Actually sets the result to the page
//without anything to show, I don't display the banner
$displayMarquise = count($oRedaction->getArrIdeesValides()) == 0 ? "none":"block";
$xAjax_objResponse->assign("redaction_marquise_cheat", "style.display", $displayMarquise);
$_SESSION["creation2"]["redact"]["obj"] = serialize($oRedaction); //Save objects new state - modified index
return $xAjax_objResponse;
}
getMarquisePlayScript() starts the timer Code: function getMarquisePlayScript(){
$script = getMarquisePauseScript(); //I clear the current timer
$script .= "timerMarquise = window.setInterval(\"xajax_refreshMarquise()\", 3000);"; //This should call refreshMarquise every 3 seconds
return $script;
}
getMarquisePauseScript() - should stop and clear the interval Code: function getMarquisePauseScript(){
return "window.clearInterval(timerMarquise);";
}
Mouse events - call the pause and play scripts Code: onmouseover='xajax_pauseMarquise();' onmouseout='xajax_playMarquise(); thanks for help Hello. I'm new to JavaScript to any help in understanding would be great. For an html form, i'm am trying to have it so when a user clicks on the 'email' input box then a div element next to it displays "please make sure it's correct", and when they click out of the box (ie, to the next field), the message disappears again. I have managed to make it appear using this; Code: function displaymessage()
{
document.getElementById("message").innerHTML="please make sure your email address isn't fake.. you dick";
}
<input class="textbox" name="email" onclick="displaymessage()"<input type='<p id="message"></p>
BUT, how do i make it disappear when the user clicks out.. is it onchange()?.. if so, how. many thanks!! I'm having some problem with this DHTML app. The problem is that when i click on an image button, nothing happens. I have verified that the DOM event handlers are loaded. However, when i click on the images (buttons), nothing happens Code: var PenSize = "3";
var PenColor = "Black";
var LoadFile = "";
var UIstatus = "visible";
var CurrentNote = 0;
var BGcolor = "#C7C1A3";
var DataPath = "\Data\\";
var ImageExtension = ".img";
var FileList = [];
var SystemPath;
var UIstatusLandscape = "visible";
var UIstatusPortrate = "hidden";
var Server = "localhost";
var UserName = "guest";
var Password = "guest";
var NxtNote = new Image();
var Mode = "Landscape";
var DataLibrary = "notes.txt";
document.onkeyup = ToggleUI;
// Startup Script
if (document.addEventListener)
{
document.addEventListener("DOMContentLoaded", LoadEventListeners, false);
alert("loaded");
}
function LoadEventListeners()
{
// Event Listeners for UI Buttons
var eventUp = document.getElementById("UpNote");
var eventPlus = document.getElementById("AddNote");
var eventSave = document.getElementById("SaveNote");
var eventClear = document.getElementById("ClearNote");
var eventDelete = document.getElementById("DeleteNote");
var eventOptions = document.getElementById("Options");
var eventDown = document.getElementById("DownNote");
eventUp.addEventListener("click", NoteUp, false);
eventPlus.addEventListener("click", AddNote, false);
eventSave.addEventListener("click", SaveNote, false);
eventClear.addEventListener("click", ClearSketch, false);
eventDelete.addEventListener("click", DeleteNote, false);
eventOptions.addEventListener("click", ConfigOptions, false);
eventDown.addEventListener("click", NoteDown, false);
// Event Listeners for the Options Dialogue
var eventDown = document.getElementById("OptionsClose");
eventDown.addEventListener("click", ConfigOptions, false);
// Finish the Startup Process
Init();
}
function Init()
{
// Get the System Path
GetSystemPath("SketchBook.html");
// Load All Filenames of the DataPath directory into an array
var TmpLoad = LoadFromDisk(SystemPath + DataPath + DataLibrary);
// Check to see if the Notebook is blank
if(TmpLoad == null)
{
// The botebook is Blank
alert("Notebook is Blank");
return;
}
// Parse the CSV file data into an Array
FileList = TmpLoad.split(",");
//Load the first Note onto the canvas
// if there are no notes in the directory, don't try to load anything
if(FileList.length < 0)
{
var Source = LoadFromDisk(FileList[CurrentNote]);
NxtNote.src = Source;
// Load the NoteBookCounter data into the innerHTML of it's DIV
// document.getElementById("NoteBookCounter").innerHTML = "<center><font size='2'>" + CurrentNote + " / " + FileList.length + "</font></center>";
// Load the image data onto the canvas
var canvas = document.getElementById('SketchPage').getContext('2d');
canvas.drawImage(NxtNote , 0, 0);
return;
}
}
function ConfigOptions()
{
if (document.getElementById("Options").style.visibility == "hidden")
{
document.getElementById("Options").style.visibility = "visible";
}
else
{
document.getElementById("Options").style.visibility = "hidden";
}
// Modify the variables of any selections that were made
PenSize = document.getElementById('GetPenSize').value;
PenColor = document.getElementById('GetPenColor').value;
}
function ToggleUI(e)
{
var KeyID = (window.event) ? event.keyCode : e.keyCode;
// KeyValue 18 is the ALT key
var KeyValue = 18;
// Use a key to hide the toolbars so that most of the screen is used for the UI
// ********** If the device is in Landscape Mode, toggle the Portrate-Style UI Toolbar
if(Mode == "Landscape")
{
if(KeyID == KeyValue)
{
if(UIstatusLandscape == "visible")
{
UIstatusLandscape = "hidden";
document.getElementById("UI_Landscape").style.visibility = "hidden";
return;
}
if(UIstatusLandscape == "hidden")
{
UIstatusLandscape = "visible";
document.getElementById("UI_Landscape").style.visibility = "visible";
}
}
}
// ********** If the device is in Portrate Mode, toggle the Portrate-Style UI Toolbar
if(Mode == "Portrate")
{
if(KeyID == KeyValue)
{
if(UIstatusPortrate == "visible")
{
UIstatusPortrate = "hidden";
document.getElementById("UI_Portrate").style.visibility = "hidden";
return;
}
if(UIstatusPortrate == "hidden")
{
UIstatusPortrate = "visible";
document.getElementById("UI_Portrate").style.visibility = "visible";
}
}
}
}
function Draw(element, event)
{
document.addEventListener("mousemove", PenHandler, true);
document.addEventListener("mouseup", upHandler, true);
event.stopPropagation();
event.preventDefault();
function PenHandler(event)
{
var x = event.clientX;
var y = event.clientY;
// mouse event goes here
var canvas = document.getElementById("SketchPage");
var ctx = canvas.getContext("2d");
if (PenShape ="Circle")
{
// This draws a circle
ctx.fillStyle = PenColor;
ctx.beginPath();
ctx.arc(x, y, PenSize, 0, Math.PI*2, true);
ctx.closePath();
ctx.fill();
}
event.stopPropagation();
}
function upHandler(event)
{
document.removeEventListener("mouseup", upHandler, true);
document.removeEventListener("mousemove", PenHandler, true);
event.stopPropagation();
}
}
function SaveNote()
{
alert("triggered");
return;
// Get the current file name
var FileName = SystemPath + DataPath + CurrentNote + ImageExtension;
// Convert the Canvas Data into a Base64 encoded PNG image
var Note = document.getElementById("SketchPage").toDataURL();
// Write the PNG file to the disk
SaveToDisk(FileName, Note);
// Update the Note Library file
// Read in the current DataLibrary File's Data
var Tmp = LoadFromDisk(SystemPath + DataPath + DataLibrary);
var NewData = Tmp + CurrentNote + ImageExtension + ",";
// Finally Save the updated DataLibrary file
SaveToDisk(Tmp, NewData);
alert("saved");
}
function NoteUp()
{
// Display the previoius note
CurrentNote--;
// Make sure you don't incrimnet to a non-existant note
if(CurrentNote == -1)
{
CurrentNote = FileList.length;
}
var Source = LoadFromDisk(FileList[CurrentNote]);
NxtNote.src = Source;
// Load the image data onto the canvas
// Clear the Pre-existing Canvas Data First
ClearSketch();
var canvas = document.getElementById('SketchPage').getContext('2d');
canvas.drawImage(NxtNote, 0, 0);
}
function NoteDown()
{
//Display the Next note
CurrentNote++;
// Make sure you don't incrimnet to a non-existant note
if(CurrentNote > FileList.length)
{
CurrentNote = 0;
}
var Source = LoadFromDisk(FileList[CurrentNote]);
NxtNote.src = Source;
// Load the image data onto the canvas
// Clear the Pre-existing Canvas Data First
ClearSketch();
var canvas = document.getElementById('SketchPage').getContext('2d');
canvas.drawImage(NxtNote, 0, 0);
// Update the NoteBookCounter data into the innerHTML of it's DIV
//document.getElementById("NoteBookCounter").innerHTML = "<center><font size='2'>" + CurrentNote + " / " + FileList.length + "</font></center>";
return;
}
function DeleteNote()
{
// Delete The current note
alert("Deleting Page - " + FileList[CurrentNote]);
// Remove the file from the File System
DeleteFile(FileList[CurrentNote]);
// Remove the Element containing the FileName to be deleted from the array
for (var x = 0; x < FileList.length; x++)
{
if(FileList[x] == CurrentNote + ImageExtension)
{
FileList.splice[x];
return;
}
}
// Rewrite the Library File
var TmpData = "";
for (var x = 0; x < FileList.length; x++)
{
TmpData = TmpData + FileList[x] + ",";
}
// Write the new Library File
SaveToDisk(SystemPath + DataPath + DataLibrary, TmpData);
// Load The Previous Note
// Display the previoius note
CurrentNote--;
// Make sure you don't incrimnet to a non-existant note
if(CurrentNote == -1)
{
CurrentNote = FileList.length;
}
// If the DataLibrary is zero length - just clear the Canvas and Return
var TmpLoad = LoadFromDisk(SystemPath + DataPath + DataLibrary);
if(TmpLoad == null)
{
CurrentNote = 0;
ClearSketch();
return;
}
// Your about to place a new image on the Canvas
// Clear the Current Canvas Data First
ClearSketch();
var Source = LoadFromDisk(FileList[CurrentNote]);
NxtNote.src = Source;
// Load the image data onto the canvas
var canvas = document.getElementById("SketchPage");
var context = canvas.getContext("2d");
canvas.drawImage(NxtNote, 0, 0);
}
function AddNote()
{
// Add a note to the notebook and at the end of the File List
// **** Later this function should be modified to be an INSERT function rather than just an add
// Just incase the user needs to go back an edit and add more things to their notebook
var NumberOfNotes = FileList.length;
CurrentNote = NumberOfNotes + 1;
// Clear the Canvas
ClearSketch();
// Write a blank image file to the Data directory so that we have the actual file there
var FileName = SystemPath + DataPath + CurrentNote + ImageExtension;
// Write it to the disk
SaveToDisk(FileName, "Null Content");
// Add the new Note Data to the end of the array
FileList.length++;
FileList[FileList.length] = CurrentNote + ImageExtension;
// Rewrite the Data Library File
TmpData = "";
for (var x = 0; x < FileList.length; x++)
{
TmpData = TmpData + FileList[x] + ",";
}
// Write the new Data Library to the Disk
SaveToDisk(SystemPath + DataPath + DataLibrary, TmpData);
// Refresh the Directory List
FileList = [];
// Load All Filenames of the DataPath directory into an array
var TmpLoad = LoadFromDisk(SystemPath + DataPath + DataLibrary);
// Parse the CSV file data into an Array
FileList = TmpLoad.split(",");
}
function ClearSketch()
{
// Clear the contents of the Canvas
//Draw a rectangle that covers the canvas
var canvas = document.getElementById("SketchPage");
var ctx = canvas.getContext("2d");
ctx.fillStyle = BGcolor;
ctx.fillRect (0, 0, canvas.width, canvas.height);
}
function Crypt(method)
{
// This function will Encrypt or Decrypt All the NoteData
if(method == "encrypt")
{
return;
}
if(method == "decrypt")
{
return;
}
}
function Archive(method)
{
// This function will Restore or Backup all NoteData to a network resource
if(method == "restore")
{
return;
}
if(method == "backup")
{
for(var x = 0; x > FileList.legth; x++)
{
// Read the data of each note
var NoteData = LoadFromDisk(FileList[x]);
// Upload the Note to the Server
var Url = Server + "/Backup.php?" + x + "?" + NoteData;
ajaxRequest(Url);
}
return;
}
}
// These are the Ajax Functions for Sending and Recieving Files
function callback(serverData, serverStatus)
{
alert(serverData); // Called automatically when we get data back from server
} // Display an alert box with the recieved data
var url='http://somedomain.com/getdata.php?doc=sometext.txt'; // This is the URL we will call.
function ajaxRequest(url)
{
var AJAX = null; // Initialize the AJAX variable.
if (window.XMLHttpRequest)
{ // Does this browser have an XMLHttpRequest object?
AJAX = new XMLHttpRequest(); // Yes -- initialize it.
}
AJAX.onreadystatechange = function() { // When the browser has the request info..
if (AJAX.readyState == 4 || AJAX.readyState == "complete")
{ // see if the complete flag is set.
callback(AJAX.responseText, AJAX.status); // Pass the response to our processing function
} // End Ajax readystate check.
}
AJAX.open("GET", url, true, UserName, Password); // Open the url this object was set-up with.
AJAX.send(null); // Send the request.
}
// ******************** These are the XPCOM Functions ************************
function GetSystemPath(ApplicationName)
{
// This function should Detect the system directory of the app
// and return that string as the SystemPath variable
// You must supply the filename of the HTML file that it is being called from
// I suppose later i could add the code to detect the HTML's actual file name
// It's on the ToDo List...
var GetSysPath = self.location;
GetSysPath = GetSysPath + "";
Get = GetSysPath.replace("file:///" , "");
Get = Get.replace(/\//g , "\\");
Get = Get.replace(ApplicationName, "");
SystemPath = Get;
return SystemPath;
}
function DeleteFile(FileName)
{
// Delete a local file
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var aFile = Components.classes["@mozilla.org/file/local;1"].createInstance();
if (aFile instanceof Components.interfaces.nsILocalFile)
{
aFile.initWithPath(FileName);
aFile.remove(false);
}
}
function SaveToDisk(filepath, content) {
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
} catch (e) {
alert("Permission to save file was denied.");
}
var file = Components.classes["@mozilla.org/file/local;1"]
.createInstance(Components.interfaces.nsILocalFile);
file.initWithPath( filepath );
if ( file.exists() == false ) {
file.create( Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 420 );
}
var outputStream = Components.classes["@mozilla.org/network/file-output-stream;1"]
.createInstance( Components.interfaces.nsIFileOutputStream );
outputStream.init( file, 0x04 | 0x08 | 0x20, 420, 0 );
var output = content;
var result = outputStream.write( output, output.length );
outputStream.close();
}
function LoadFromDisk(filePath)
{
if(window.Components)
try
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(filePath);
if (!file.exists())
return(null);
var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream);
inputStream.init(file, 0x01, 00004, null);
var sInputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream);
sInputStream.init(inputStream);
return(sInputStream.read(sInputStream.available()));
}
catch(e)
{
//alert("Exception while attempting to load\n\n" + e);
return(false);
}
return(null);
}
Hi all, The question is hopefully relatively simple. if I have an object say Code: [
var SampleObject = function(id){
SampleObject.id = id;
SampleObject.age= 22;
}
Is there a way to create an event that triggers every time the age member value changes? Thanks Ollie. |
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