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JavaScript - Mozilla - Access Event Object
I have a JS method register in a TD element as below:
<td Id="MyTd" ondragenter="MyMethod('MyParam')" /> Below is the Js Method: function MyMethod(MyParam) { event.dataTransfer.dropEffect = 'move'; } The JS method works fine in IE but in mozilla throws an error that event is undefined. I cant pass the event object from HTML while registering the method as HTML is written by someone else and I cannot change that. All I can change is the JS method. How can i access the event object in JS method. Thanks. 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 If I use a window opener to open a new window, is there a way to detect that the new window is finished loading before carrying out some other directive in the opener window? Can I access the remote window's onload event from the opener window? I need to know that the website has loaded before moving to the next page. something like: remoteWindow.onload = goToPage(url); Is this even possible? Hi all, I was looking at mozilla object.watch function and found this post http://stackoverflow.com/questions/1...r-all-browsers and the solution post has a object.watch function, my question is how is this implemented? Do I need to put it in a file and include it along with my other libs? When I call it do I need to add the .prototype or just PHP Code: myObject.watch("itemSelect", handler); Will this create a problem if I'm using mozilla? Thanks! Hi all, Have problem from getting data of JavaScript Object ie. Associative Array. Code: var a, table1
a = new ActiveXObject("MyProgID"); a.GetDataFromExcel("C:\\Users\\myFolder\\Desktop\\test.xls","Sheet1")
a.Generate()
table1 = a.writeInTable();
Here writeInTable function returns a 2D Object array from DLL written in VB.Net. So I got the Object to table1. But from table1, I can't access the values but its there. table1 shows values as in this image(Image Attached.) Actually, I tried many ways like tab(0)(0) tab[0][0] tab["0"] tab.(0).(0) tab.[0].[0] Also with toArray(), (new VBArray(tab)).toArray().... I don't know what I am wrong..Can anyone help me on this? Thanks... Shanmugavel.C Hi, I'm very new to javascript and I need your help. What I'm trying to do is: I have a html file with javascipt embeded in, in this file I want to use a table object in another javascript file. How do I access this object? Your help is very much appreciated. Regards, lep2 I have several list items in an html document. Each list item has an anchor tag and each anchor has an 'onmouseover' event. Is it possible to get the containing object for the event upon the mouseover? Hello Members. Firstly, I will explain why it is necessary. I am designing a site that will NOT be run from servers and will be accessed directly from a hard drive in a LAN environment only. Therefore no server side scripting is possible. Secondly, the data contained in the database is not important and only contains city names, business line names and team names (i.e. it is simply a way of managing changes to our organizational structure rather than editing 100's of <select> options whenever one of our business lines changes locations). So, my aim is for the JavaScript to grab data from an Access database and then populate a few <select> objects such as: Code: <select name="Site" id="site"> <option>....list of all Sites....</options> <select name="Business Line" id="lines> <option>....list of Business Lines in that Site....</options> <select name="Teams" id="teams> <option>....list of teams in that Business Line on that Site....</options> Here is the connection script that I have so far which is fairly basic: Code: function siteSelect(){
adOpenForwardOnly = 0;
adLockReadOnly = 1;
adCmdText = 1;
var myConnect = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = "C:\AAA Backup\Forms.mbd";Persist Security Info=False";
var ConnectObj = new ActiveXObject("ADODB.Connection");
var adoRecordSet = new ActiveXObject("ADODB.Recordset");
var sql = "SELECT SiteName FROM tblSite;";
this.states = [];
ConnectObj.Open(myConnect);
adoRecordSet.Open(sql, ConnectObj, adOpenForwardOnly,adLockReadOnly,adCmdText);
while (adoRecordSet.EOF != true)
{
this.states[this.states.length]= adoRecordSet("SiteName").value;
adoRecordSet.MoveNext();
}
adoRecordSet.Close();
}
however, it currently only grabs the site list so I would need additional queries that use variables such as: (this is guaranteed to be completely wrong!) Code: "SELECT lineName FROM tblSite WHERE lineName="siteID.value";"; or is it: Code: "SELECT lineName FROM tblSite WHERE lineName=" + 'siteID.value' + ";"; Not sure. I also have no idea how to actually get the record sets into the visible select objects in the <body>. If any one could offer some suggestions, point me in the direction of some functions or explain a method of accomplishing this task that would be great! Peace. 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? Hi, every time I try and alert: [ { number:0, secondnumber:0 }, { number:2, secondnumber:1 }, { number:1, secondnumber:2 } ] it just shows [object object], [object object], [object object]. Why is this and what can I do to make the record be shown as it is above in an alert? Thanks. I can't get any info from Firebug except that one line, uncaught exception [object Object]. The code fully worked, then I needed to make it dynamically create Sortables from the scriptaculous library based on how many X were in a table in my database, which I've done, and I'm thinking it may be a simple slight parse error of some type, I'm not too good with Javascript, because now my script barely works. I've double checked the script's source code, the PHP variables are exactly what they should be. Code: print<<<HERE
Sortable.create('sortlist$box', { tag: 'img', overlap:'horizontal',constraint:false, containment: $list, dropOnEmpty: true,
onChange: function(item) {
var list = Sortable.options(item).element;
if(changeEffect) changeEffect.cancel();
changeEffect = new Effect.Highlight('changeNotification', {restoreColor:"transparent" });
},
onDrop: function(item) {
var thing=Sortable.options(item).element.identify();
var anchors = document.getElementById(thing).childNodes.length-2;
if(anchors > 20){
alert('This box had 20 creatures in it already, your last action has not been saved.');
window.location.reload();
}
else{
new Ajax.Request("saveImageOrder.php", {
method: "post",
parameters: { data: Sortable.serialize("sortlist$box") }
});
}
}
});
HERE;
$box++;
}
?>
});
</script>
if you solve this I'll send ya $10 via paypal I created a method for displaying an object's properties: Code: renderfunction = false;
function showProperty (object, property)
{
document.write ('<td class="type">' + (typeof object[property]) + '</td>'
+ '<td class="name">' + property + '</td>');
document.writeln('<td class="value">' +
(
(typeof object[property] != 'function')
? object[property]
:(
(property != 'showProperties')
? (
renderfunction
? object[property]()
: ('<span class="self">NOT RENDERED</span>')
)
: ('<span class="self">THIS</span>')
)
)
+ '</td>');
document.writeln('<td class="hasOwnProperty" >'
+ (
object.hasOwnProperty(property)
? "Local"
: "Inherited"
)
+ '</td>');
if (typeof object[property] == 'function')
{
document.writeln ('<td class="function">' + object[property] + '</td>');
}
else
{
document.writeln ('<td class="function"> </td>');
}
}
As long as renderfunction = false, the object is fine coming out of this function. However, if I change renderfunction to true, all my properties become undefined. Why isn't this working as I expect it to? How should I fix it? Thanks in advance, -Brian. Hi all, I'm stumped on finding a way in javascript to create an object factory whose instances are also object factories. In short I want something like that below, but no joy ... any clues? Code: function createClass () {
return new createClass()
function createClass() {
return new createInstance ()
function createInstance () {
//Default properties, values and methods which might later be extended
}
}
}
var createDoor = createClass();
var door1 = createDoor();
var door2 = createDoor();
var createChair = createClass();
var chair1 = createChair ();
var chair2 = createChair ();
Ignore post (if mod, please delete)
Hello together! I generate html code with jsp. In that jsp there a several framesets and frames. And yes i know, frames are not really up to date but it's an old program and i have to deal with it now. Anyway, in the top frameset i have an onload attribute like onload="load()". In the function load i want to access the Element.prototype object. But unfortunately typeof Element gives me "undefined". So i looked a little deeper and found that window.toString() gives me "[object]" and not as expected "[object window]" so somehow my window doesn't know that its construcor is Window. window.construcor is "undefined" as well. And i don't have access to the Element object. I really don't know where the error could be. When the page is loaded and i access the same window over the console, then everything is right. But in my function a can't get access to the objects i need. I also don't know what part of the code could be useful to post here, but maybe someone had a similar problem before? i should say that this problem only occurs in IE8. In IE9 it works perfectly. Has anyone any idea?? I'm writing a program that involves a network of interconnected nodes (or simply objects in my example below). It depends on being able to access properties of an object's linked objects (a bit oddly worded, sorry)... Problem is I'm not sure how to properly access those properties... see below please. <script> //This is an example of a problem im having in my own code... //I want to access the name of the object within the links array wintin the object... var objA = {name: "Object A", links: [objB, objC]}; var objB = {name: "Object B", links: [objC, objD, objE]}; var objC = {name: "Object C", links: [objB]}; var objD = {name: "Object D", links: [objE]}; var objE = {name: "Object E", links: [objD]}; //ex: I want to access the name of Object A's first link... console.log(objA.links[0].name); </script> I'm hoping to get "Object B"... But instead I get: TypeError: Result of expression 'objA.links[0]' [undefined] is not an object. Is there another way around this? Any thoughts are appreciated. Hello. Is there any way to get the variable name of an object from inside the object? E.g. PHP Code: function Bla(){ this.write = function(){ document.write(<objectname>); } } obj1 = new Bla(); obj1.write(); //Outputs obj1 Here is my script: PHP Code: function myTimer(seconds, obj){ this.seconds = seconds; this.obj = obj; this.startTimer = function(){ if(this.seconds>0){ this.seconds--; this.obj.innerHTML = this.seconds; this.timer = setTimeout("Timer.start()",1000); } } } Timer = new Timer(10, obj); Timer.startTimer(); Now the problem is that the variable that contains the object must be named "Timer". This way I cannot create new timer objects with different variable names I have tried: this.timer = setTimeout("this.start()",1000); but it doesn't work. That's why it would be good to detect the variable name and instead use something like this: this.timer = setTimeout(varname+".start()",1000); I would rather not have to pass the variable name through a parameter like this: Timer1 = new Timer(10, obj, "Timer1"); Thanks in advance. Quote: menu: function( a, b ) { $( b ).observe( 'click', function( event ) { event.stop(); if( $( a ).visible() ) { $( a ).hide(); $( b ).removeClassName( 'selected' ); document.stopObserving( 'click' ); } else { $( a ).show(); $( b ).addClassName( 'selected' ); document.observe( 'click', function( e ) { if( e.target.id != a && e.target.id != b && !Element.descendantOf( e.target, $( a ) ) ) { $( a ).hide(); $( b ).removeClassName( 'selected' ); document.stopObserving( 'click' ); } }); } }); $$( '#' + b + ' > a' ).each( function( element ) { element.observe( 'click', function( event ) { $( a ).hide(); $( b ).removeClassName( 'selected' ); document.stopObserving( 'click' ); }); }); } This work's perfrect accept when i use it with others on the menu it leaves the other ones open, how do i get it to close the open one when i open a new menu.. Thanks. I am trying to troubleshoot my javascript function below. Code: <script type="text/javascript">
function txtboxfill(fillobj) {
var rChar=String.fromCharCode(13);
var myVal = "To: " + this.form.to.value + rChar;
myVal = myVal + "From: " + this.form.from.value + rChar;
myVal = myVal + "Subj: " + this.form.subj.value + rChar + rChar;
myVal = myVal + "Message: ";
fillobj.value = myVal;
}
</script>
Then I have a text box input field with an Code: <input type="text" id="tp" name="to" size="34" class="totext" onkeyup="txtboxfill(this.form.msg_area);"> and when I enter text in this field it gives me a 'this.form.to' is null or not an object and does not populate the textarea. BTW, msg_area is the id of my textarea. Thank you. HI Friends, I am facing some issue in javascript .my code is working in ie but not in mozilla onkeypress and onkeydown events.please tell me the solution if u knows. my code is givenbellow. in javascript file i have two methods. Code: //========javascript file===========
//will call on keydown
function keyCheck(e)
{
alert('hi---hello --onkeydown');
// var KeyID =(window.event)? event.keyCode : e.which;
var browser=navigator.appName;
// document.write("Browser name: "+ browser);
var asciiValue=event.keyCode;
if(asciiValue=='13' || asciiValue=='32'){
return true;
}
return false;
}
//call on key press
function closePopUpLayer1(e){
alert('hi---onkeypress');
var browser=navigator.appName;
document.write("Browser name: "+ browser);
unHideDropDownLists();
document.getElementById('popupLayerContent').className="popuplayer";
document.getElementById('mainBody').style.display="none";
document.getElementById('Hotels_TnC_popUp').focus();
}
==============my html file===========
<div>
<div class="popup-top-corner-left-img"></div>
<div class="popup-top-image"></div>
<div class="popup-top-corner-right-img"></div>
</div>
<div>
<div class="popup-left-image"></div>
<div class="popup-div1">
<div>
<div class="XX-Large-Dark-Gold-popUpText">credit</div>
//here i am calling two functions in javascript
<div class="sprite-btn-close" id="focusNew1" onkeydown="javascript:return keyCheck(event)" onkeypress="alert('hello');javascript:closePopUpLayer1(event)" onclick="javascript:closePopUpLayer(),document.getElementById('Hotels_TnC_popUp').focus();" ></div>
</div>
<div class="popup-dark-gray-text">xxxxxdiv>
</div>
<div class="popup-right-image"></div>
</div>
<div class="popup-bottom">
<div class="popup-bottom-corner-left-img"></div>
<div class="popup-bottom-image"></div>
<div class="popup-bottom-corner-right-img"></div>
</div>
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