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JavaScript - On Scroll Event
Hello All,
How can i want to capture onscroll event in Javascript ? Thanks in advance. Similar TutorialsHi forum, I am trying to attach an event to a dynamically produced button, and then use stopPropagation and preventDefault. Code: function chapter12_nodeOne() {
//create an element
var element = document.createElement('input');
//set some attributes
element.setAttribute('type', 'button');
element.setAttribute('value', 'submit');
element.setAttribute('id', 'myBtn');
//appendd the element into a DIV
document.getElementById('myDiv').appendChild(element);
//uses EventUtil to attach an event listener
EventUtil.addHandler(element, 'click', function() {
alert('event attached');
});
var flag = confirm('prevent default behavior of button?');
if (flag) {
var el = document.getElementById('myBtn');/////////////////////////(1)
var ev = el.onclick;
}
}
var EventUtil = {
addHandler: function(element, type, handler) {
//check if the element and the browser support DOM Level 2 event attachment
//if the user is not browsing with IE
if (element.addEventListener) {
element.addEventListener(type, handler, false);
}
//if user is browsing with IE
else if (element.attachEvent) {
element.attachEvent("on" + type, handler);
}
//if user is using a browser that only supports DOM Level 0 event attachment
else {
element["on" + type] = handler;
}
},
removeHandler: function(element, type, handler) {
//check if the element and the browser support DOM Level 2 event attachment
//if the user is not browsing with IE
if (element.removeEventListener) {
element.removeEventListener(type, handler, false);
}
//if user is browsing with IE
else if (element.detachEvent) {
element.detachEvent("on" + type, handler);
}
//if user is using a browser that only supports DOM Level 0 event attachment
else {
element["on" + type] = null;
}
}
};
But when debugging I see under el on the line marked with (1) that the onclick event is null. What am I doing wrong?! PS:the event is attached, when I click on the button I get an alert message is it possible to capture the control.event or element.event that was fired to invoke the onbeforeunload event. for example, if a button is clicked and it causes the onbeforeunload event to fire can i determine which button was clicked. thanks I have a ondrag event handler and in that I am trying to retrieve e.ClientX but it always return 0 in Mozilla. Works fine in IE though. How can retrieve the clientX and clientY in ondrag event? Have a container set to an em height and need the get the scroll or overflow value. Basically need to know if text node inside container has content hidden below the height allowed. How do I get this?
Does anyone know where I could get a scroller similar to the one used in this recent news div? http://www.383project.com/ thanks! I have a asp:textbox where I'd like to capture when the user hits Enter, and then instead of doing whatever it normally would, then it should call a javascript function. I'm not sure how to do that, other than I suppose I should use the OnTextChanged event. But I'm not sure which parameters are sent with the event... Thanks in advance I am looking to add a calendar to my website in order to list events for each day on the calendar you click on. For example, the link below shows a calendar on the left, that when you click on a day it lists all the events that day. I have done a few searches, but am not sure if I can find a calendar that acts like this... Calendar Example Any help would be greatly appreciated! good day: I'm using an ajax script that receives a value into an input box and thus performs a function. I need to invoke the function immediately after the input box has a value. Currently the box has to lose focus in order for the function to work. What is the correct event handler for this to work? I have this now PHP Code: onkeyup="showResult2(this.value)" which is obviously not what I need. This is the ajax PHP Code: <script type="text/javascript"> function showResult2(strs) { if (strs.length==0) { document.getElementById("livesearch2").innerHTML=""; document.getElementById("livesearch2").style.border="0px"; return; } if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("livesearch2").innerHTML=xmlhttp.responseText; document.getElementById("livesearch2").style.border="1px solid #A5ACB2"; } } xmlhttp.open("GET","getOilChangeDate.php?q="+strs,true); xmlhttp.send(); } </script> Any thoughts on this! Mossa HI, i know very little about javascript, just enough to get me into trouble actually lol. Here is what im working with. I have a custom Instant messenger for members. It uses embed object macromedia as well as javascript to diplay the window and send messages. What i want to do is simply add an onchange that when one person is typing it shows they are typing (ie xxxxx is typing....) My experience is in php and html and i looked thru the script and the javascript functions but im not sure what im looking for exactly. Do i need to have access to the swf or fla file and be able to edit them to do this? I dont see any form inputs or i would know exactly where to put the onchange lol. Im guessing the input is in the swf or fla file not sure how that works. what im guessing is that in the embed or the object tags (ill play with it) i can put something like Code: document.write('test on change\n');
i think i need to wrap that in doc write script type=javascript in quotes so it parses. If i can get that text to show up inside the IM where i want it then i can try to figure out how to set focus on box and recongize onchange and do some testing. I think i might even be able to doc write the onchange command but not sure. Thanks Hello forum, My name is juan and recently started html programming. I have a web page with a drop box with the name of states. Code: <option value="">Alabama</option> <option value="">Alaska</option> I can add a onclick="code here" to the tag so that when the drop box alabama is selected it triggers the onclick event. Im using Ibox in order to have a image of the state open. Code: <a href="images/large/image_1b.jpg" rel="ibox" title="alabama at 1024x450!"><img src="images/small/image_1.jpg" alt=""/></a> the above is a <a> link tag correct? How do I go bout adding the above code into the onclick event? hi there here's my problem, I want to alert each innerHTML of the tag "a" when mouse over, but it only alert when i insert "return false;" in the end of the loop, what's the problem? 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" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title></title>
<script type="text/javascript" >
function show(){
var linkIt = document.getElementsByTagName("a")
for(var i=0; i<linkIt.length; i++){
linkIt[i].onmouseover = function(){
alert(linkIt[i].innerHTML);
}
return false;
}
}
</script>
</head>
<body onload="show()">
<ul id="imagegallery">
<li>
<a href="images/fireworks.jpg" title="A fireworks display">Fireworks</a>
</li>
<li>
<a href="images/coffee.jpg" title="A cup of black coffee" >Coffee</a>
</li>
<li>
<a href="images/rose.jpg" title="A red, red rose">Rose</a>
</li>
<li>
<a href="images/bigben.jpg" title="The famous clock">Big Ben</a>
</li>
</ul>
</body>
</html>
Hi I am new to Javascript. I am working in keyboard Event handling. i dont know how to handle multple keys pressed or sequence of keys pressed. Want to know more about key holding , key Listener. 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. Hi I'm a newbie. Please help me. I'm using Joomla. I've got a dropdown which reads the filename from the database. When the user selects it I want an onchange event to open the pdf. I've been at it for 2 days now. Code: <?php
$con = mysql_connect('localhost', 'root', '');
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("metnet", $con);
$sql="SELECT * FROM newsletter";
$result = mysql_query($sql);
echo "<form method='post'>";
$dropdown = "<select name='sname' onChange='location(this.form.sname)' >";
while($row = mysql_fetch_assoc($result)) {
$dropdown .= "\r\n<option value='{$row['fpath']}'>{$row['fpath']}</option>";
}
$dropdown .= "\r\n</select>";
echo $dropdown;
?>
this: Code: <body onload="pack = 'Original';recoger_mapa_url();" onkeydown="pulsar_tecla(event, 'onkeypress');" onkeypress="pulsar_tecla(event, 'onkeydown');"> [/CODE] to this: Code: pack = 'Original'; recoger_mapa_url(); window.onkeydown = pulsar_tecla(window.event, 'onkeypress'); window.onkeypress= pulsar_tecla(window.event, 'onkeydown'); does not work(event is undefined). Suggestions ? Hi, I am trying to copy the value of one textbox to another using onchange event. For some reason, my code does not work, please let me know where I went wrong. here is my code: Code: <html>
<head>
<script type="text/javascript">
function copyText()
{
document.getElementById("field2").value=document.getElementById("field1").value;
}
</script>
</head>
<body>
Field1: <input type="text" id="field1"/><br />
Field2: <input type="text" id="field2" onchange="copyText()"/>
</body>
</html>
Thank you. note: this is not homework Hi all, Currently I am doing this: Code: var e = document.getElementById('id');
e.style.color = '#ff0000';
e.style.fontFamily = 'sans-serif';
e.innerHTML = time;
...blah blah...
What I'm actually doing is inserting the current time into an existing DIV and updating it every second. THAT all works. What I want to do is also set an event for that div.... something like this: e.event.onclick = 'runThisCode()'; Of course, the above doesn't work... and I'm not even sure what to ask for doing a Google search... because I get no hits (or maybe it's not possible). So, is it possible, and if so, how? Thanks! -- Roger p.s. I really don't want to edit the code itself (where that div is) because it's part of another app that may change as they update it and I don't want to have to re-patch every new release. I can't seem to get the event listener to run an event when I focus on the text field with the ID username. JavaScript: Code: function listener_loginForm() {
var fields = Array("username","password");
for ( j = 0; j < fields.length; j++ ) {
var objs = document.getElementById(fields[j]);
for ( var i = 0; i < objs.length; ++i ) {
var elm = objs [ i ];
elm.onblur = function() { display_text_bg(this); };
if (elm.Id = "password") {
elm.onfocus = function() { switch_field(this); };
}
}
}
}
//This function attaches events to elements.
var addEvent = function( elm, evt, fun ) {
if ( elm.addEventListener ) {
elm.addEventListener( evt, fun, false );
} else if ( elm.attachEvent ) {
elm.attachEvent( 'on' + evt, fun );
} else {
elm [ 'on' + evt ] = fun;
}
};
addEvent ( window, "load", listener_loginForm );
//Put text in fields if there is not data, also switch text field to password field
//when focused on. Switch back to text field if no text is entered.
function display_text_bg(obj) {
alert("remove text");
}
function switch_field(obj) {
alert("switch");
}
HTML: Code: <form name="login" class="login">
<label for="username">Username: </label><br />
<input type="text" name="username" id="username" />
<br /><br />
<label for="password">Password: </label><br />
<input type="text" name="password" id="password" />
<br /><br />
<label for="remember">Remember Me? </label><br />
<br />
<span class="remember">
<span class="text">Never</span>
<input type="hidden" value="never" name="rememberme" />
<ul>
<li>Never</li>
<li>24 Hours</li>
<li>1 Week</li>
<li>Always</li>
</ul>
</span>
</form>
Please can someone explain to me in simple terms which this actually does. From what I understand it will check all events until a defined event happens, such as rollover of a certain image, and then it activates a function? What I want to do is use this so that when I rollover a element such as below: Code: <img src="img url" alt="this is a tooltip" tooltip="true" /> I want it to pass the obj to a function which then runs, and then once the mouse of not over that element it will activate another function passing the previous object to this function. Although an element such as the example below would not activate these functions: Code: <img src="img url" alt="this is a tooltip"/> As the tooltip tag does not exist or has the value of false... Also, wouldn't this use a lot of resources as it checks every event which the mouse passes over? Hey guys, I had a client ask me to frankenstein two HTML5 themes together to achieve having both a countdown clock and snow effect on a "coming soon" page. You can see it he EXSAPIEN - A New Graphic Novel The problem I'm having now is that the social media buttons are not clickable (The links work on my iPhone, but not on my laptop.) I have been able to EITHER display the snow, OR make the links work, but not both at the same time. This code seems to be the piece that is making the difference (specifically, the Code: event.preventDefault(); toward the end): Code:
function init() {
container = document.createElement('div');
document.body.appendChild(container);
camera = new THREE.PerspectiveCamera( 75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
camera.position.z = 1000;
scene = new THREE.Scene();
scene.add(camera);
renderer = new THREE.CanvasRenderer();
renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
var material = new THREE.ParticleBasicMaterial( { map: new THREE.Texture(particleImage) } );
for (var i = 0; i < 500; i++) {
particle = new Particle3D( material);
particle.position.x = Math.random() * 2000 - 1000;
particle.position.y = Math.random() * 2000 - 1000;
particle.position.z = Math.random() * 2000 - 1000;
particle.scale.x = particle.scale.y = 1;
scene.add( particle );
particles.push(particle);
}
container.appendChild( renderer.domElement );
var userAgent = navigator.userAgent || navigator.vendor || window.opera;
if( userAgent.match( /iPad/i ) || userAgent.match( /iPhone/i ) || userAgent.match( /iPod/i ) )
{
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
document.removeEventListener( 'touchmove', onDocumentTouchMove, false );
}
else if( userAgent.match( /Android/i ) )
{
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
document.removeEventListener( 'touchmove', onDocumentTouchMove, false );
}
else
{
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
}
setInterval( loop, 1000 / 60 );
$('canvas').parent().addClass('snow');
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
mouseY = event.clientY - windowHalfY;
}
function onDocumentTouchStart( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}
I learned jscript back in 1999, so with all the new technology, multi-touch etc, that has come about in the meantime, I am effectively a n00b again. :/ Please help! What can I do here that will allow the snow effect to run while still keeping the social media links clickable?? Is there any other code I can provide that would be useful in solving the problem? Thank you!! |
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