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JavaScript - Issue On Onkeypress Event
Hi folks,
I have the problem on using onKeyPress Event. I added one TextArea button to my form and wrote the validation script of max 10 characters for this TextArea. The code is like as shown below: <script type="text/javascript"> function isMaxLength( posDesc) { var desc = posDesc.value if( desc.length >10) { alert( "10 characters "); posDesc.value = desc.substring(0,10); posDesc.focus(); } } </script> </HEAD> <BODY> <TEXTAREA NAME =POSITION_DESC ROWS =2 COLS = 25 MAXLENGTH = 10 onKeyUp ="isMaxLength(this);" WRAP = VIRTUAL >position</TEXTAREA> </BODY> --> while entering the 11 th character the onKeyPress Event fires and displays alert message. And it replacing the 10 th index character with 11th new character. Here i do not want to update 10th index character. i want to remove 11th index character from textarea. For OnKeyUp Event it is working fine but this event would not filtering the ctrl,alt,shift characters. I am new for Javascript , please help me. regards, prakash. Similar TutorialsI have multiple input fields that use the onkeypress event to fire off the a submit button to run a makeRequest. On Firefox everything works great but in IE 7 and 8 no matter which input field your curser is in it always does the very first input field/makeRequest as well. Code:
<fieldset>
<legend>Test if mail server accepts email for a user.</legend>
<div class="reportlabel">Enter the email address you wish to test.</div>
<input name="mailbox_name" class="reportinput" type="text" value="" size="34" id="mailbox_name" onkeypress="if (event.keyCode == 13) document.getElementById('mailbox_submit').click();" />
<input name="Submit" type="submit" class="submit" name="mailbox_submit" id="mailbox_submit" value="" onClick="pingRequest('tools/mail_test.php?mb=' + document.getElementById('mailbox_name').value + '&test=mailbox', 'mb_div');" />
<div id="mb_div"></div>
</fieldset>
<div style="height:25px;"> </div>
<fieldset>
<legend>Test if domain has a mail server and it accepts mail.</legend>
<div class="reportlabel">Enter the domain you wish to test.</div>
<input name="accept_email" class="reportinput" type="text" value="" size="34" id="accept_email" onkeypress="if (event.keyCode == 13) document.getElementById('accept_submit').click();" />
<input name="Submit" type="submit" class="submit" name="accept_submit" id="accept_submit" value="" onClick="blRequest('tools/mail_test.php?domain=' + document.getElementById('accept_email').value + '&test=accept', 'email_div');" />
<div id="email_div"></div>
</fieldset>
Ive tried onkeydown, onkeyup everything gives the same result. Any help on the this would be greatly appreciated. Thanks Good day! In my javascript code I have a function for the enter key. I want to add cursor key in that function/ I research about the coding for cursor key but I can't find the code same on what I want to happen. Here is the code: Code: <script language="javascript">
function handleEnter(e, nextfield)
{
var characterCode = (e && e.which)? e.which: e.keyCode;
if(characterCode == 13)
{
document.getElementById(nextfield).focus();
return false;
}
else
{
return true;
}
}
</script>
<input type='text' name='plt' onkeypress='return handleEnter(event,\"b0\");' />
Thank you Hey all, I have an object called Table that gets instantiated: Code: var tableReady = new Table($(this)) This Table in turn instantiates a header: Code: if(typeof header.attr('data-sorter') !== 'undefined') headers.push(new Header(header));
A method is attached to the Header object called attach() which simply passes in a string 'click': Code: var Header = function(header){
this.header = header;
this.addEventHandler(this.header, "click", attach("click"), true);
}
The addEventHandler() function is declared below: Code: function addEventHandler(oNode, evt, oFunc, bCaptures)
{
if (typeof(window.event) != "undefined")
oNode.attachEvent("on"+evt, oFunc);
else
oNode.addEventListener(evt, oFunc, bCaptures);
}
While the addEventHandler() function is called during Header instantiation, which in turn calls attach(), attach() is never executed unless there is a click event called on header object: Code: Header.prototype = {
attach: function(event){
var obj = this;
if(event == "click"){
obj.header.bind("click", function(e){
obj.children()[0].preventDefault();
return obj.calculate();
})
}
},
I call preventDefault() (I'm using the jquery library as well) to try to prevent the link from responding to a click by targeting obj.children()[0] which refgers to the nested link. Unfortunately this doesn;t work. The link is still triggered anyway. How can I force the browser not to respond to the link in the above situation, preferably using an OOP solution? Thanks for response. Good morning guys. I am new to Javascript and am trying to add some functionality to a website but have come across a problem when trying to utilise two seperate Javascript onloads events. I have a text scroller to display the latest news and I also have a javascript lightbox gallery. Both of these events work perfectly on their own but when I try to include both on one page only one of the events is executed. My code is displayed below: Code: <script type="text/javascript" src="js/prototype.js"></script>
<script type="text/javascript" src="js/scriptaculous.js?load=effects,builder"></script>
<script type="text/javascript" src="js/lightbox.js"></script>
<script type="text/javascript" src="js/jquery-1.2.6.pack.js"></script>
<script type="text/javascript" src="js/jquery.li-scroller.1.0.js"></script>
<script type="text/javascript">
$(function(){
$("ul#news-scroller").liScroll({travelocity: 0.04});
});
</script>
</head>
<body onload="clickMenu('gallery'); initLightbox()">
If anyone could tell me where my mistake is I would be so grateful. I know it is probably a really obvious mistake but being new to this I am unsure where to start looking. Thanks in advance! Mack Hi 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? I want to use an onkeydown() on my web site and the web site to know which key I pressed. Specifically know I pressed the arrow keys and store which key was pressed in a variable. any help? must work on all browsers. Hello All, How can i want to capture onscroll event in Javascript ? Thanks in advance. I'm trying to assign and event to a tag during the onload function, but I don't seem to be using the correct syntax. Can someone tell me the correct way to make the assignment? Code: <!DOC HTML>
<html>
<head>
<title> Test Event Assignment </title>
<script type="text/javascript">
var eMessages = ['Main 1','Main 2','Main 3'];
function eMsg(msg) { alert(msg); }
window.onload = function() {
var sel = document.getElementById('mmenu').getElementsByTagName('dt');
for (var i=0; i<sel.length; i++) {
// sel[i].onclick="eMsg(eMessages[i])"; // does not work
// sel[i].onclick="eMsg('"+eMessages[i]+"')"; // does not work
sel[i].onclick=eMsg(eMessages[i]); // works, but only one time on-load
}
}
</script>
<style type="text/css">
dt { border:1px solid black; background-Color:yellow; width:50px; }
</style>
</head>
<body>
<dl id="mmenu">
<dt> A </dt>
<dt> B </dt>
<dt> C </dt>
</dl>
</body>
</html>
Ultimately I would like it to do something more useful than an alert, but approaching the problem one piece at a time. 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 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!! Hi, New to javascript. Doing web page with ASP/VB.NET. Have text boxes for UI on page. Two command buttons - Submit (for db update) and Cancel. I need the Cancel button to prompt the user to verify cancellation. Need OK/Cancel buttons on alert. If user selects Cancel-no action. If user selects OK then I want the text boxes cleared of user text input and focus returned to first text box. I think this may be the code but do not know how to apply it. function Clear() { var res=window.confirm("Please confirm cancellation-text boxes will be cleared"); if(res==true) { document.getElementById("StrtDte").value=""; document.getElementById("EndDte").value=""; document.getElementById("txtProjRegHrsAl").value=""; document.getElementById("txtProjOTHrsAl").value=""; document.getElementById("ddlRAS").focus(); } } Is this code valid or invalid for the events I need? How do I set it to fire when user clicks the ASP Cancel button? Thanks, John 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>
Dammit, for some reason this script has stopped working :/ When I click the links with the ID's of "login_dialog" and "register_dialog" a div should be shown... I'm using an event listener to do this. Code: function listener_items() {
//Text field background
addEvent(document.getElementById('input_username'), "click", add_username_password);
addEvent(document.getElementById('input_username'), "blur", remove_username_password);
addEvent(document.getElementById('input_password'), "click", add_username_password);
addEvent(document.getElementById('input_password'), "blur", remove_username_password);
//Switch between forms
addEvent(document.getElementById('dialog_login'), "click", login_dialog_login);
addEvent(document.getElementById('dialog_register'), "click", login_dialog_register);
addEvent(document.getElementById('dialog_recovery'), "click", login_dialog_recovery);
//Display Dialog
addEvent(document.getElementById('login_dialog'), "click", navbar_login);
addEvent(document.getElementById('register_dialog'), "click", navbar_register);
//Close Dialog
addEvent(document.getElementById('close_dialog'), "click", login_dialog_close);
}
//Login dialog, login form input fields background text
var add_username_password = function() { add_input_text(this); };
var remove_username_password = function() { remove_input_text(this); };
//Login dialog buttons
var login_dialog_login = function() { display_form('login'); };
var login_dialog_register = function() { display_form('register'); };
var login_dialog_recovery = function() { display_form('recovery'); };
//Close dialog
var login_dialog_close = function() { display_dialog('login', 'hidden'); };
//Navigation bar buttons
var navbar_login = function() { display_dialog('login', 'visible'); };
var navbar_register = function() { display_dialog('register', 'visible'); };
//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_items );
//Display/Hide login dialog
function display_dialog(dialog, fun) {
//Define the active menu item style
var active_style = "border-right-width:3px; width:113px; border-right-color:#33CCFF; color:#FFFFFF;";
//Creat array with all forms
var formsHide = Array("login","register","recovery"); var i = 0;
document.getElementById('wrapper').setAttribute('style', 'visibility:' + fun);
for ( i = 0; i < formsHide.length; i++ ) {
if ( formsHide[i] == dialog && fun == 'visible' );
document.getElementById("dialog_" + dialog).setAttribute('style', active_style);
document.getElementById(formsHide[i] + "_form").setAttribute('style', 'visibility:visible');
formsHide.splice(i, 1);
}
document.getElementById(formsHide[i] + "_form").setAttribute('style', 'visibility:hidden');
}
}
//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 add_input_text(obj) {
var id = obj.id.split("input_");
document.getElementById(id[1]).innerHTML = '';
}
function remove_input_text(obj) {
if (obj.value.length == 0) {
var id = obj.id.split("input_");
var id2 = id[1].substr(0, 1).toUpperCase() + id[1].substr(1);
document.getElementById(id[1]).innerHTML = id2;
}
}
function display_form(form) {
//Define the active menu item style
var active_style = "border-right-width:3px; width:113px; border-right-color:#33CCFF; color:#FFFFFF;";
var forms = Array("login", "register", "recovery");
for ( c = 0; c < forms.length; c++ ) {
if ( forms[c] == form ) {
document.getElementById( forms[c] + "_form" ).style.visibility = "visible";
document.getElementById("dialog_" + forms[c]).setAttribute('style', active_style);
document.getElementById("dialog_" + forms[c]).setAttribute('class', 'overlay_table' + ' ' + forms[c] + ' active');
forms.splice(c, 1);
}
}
for ( c = 0; c < forms.length; c++ ) {
document.getElementById("dialog_" + forms[c]).setAttribute('style', '')
document.getElementById( forms[c] + "_form" ).style.visibility = "hidden";
document.getElementById("dialog_" + forms[c]).setAttribute('class', 'overlay_table' + ' ' + forms[c]);
}
}
HTML: Code: <span><a href="#" id="login_dialog" style="color:#33CCFF;">Login</a></span> <span><a href="#" id="register_dialog" >Register</a></span> 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! 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. 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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