event-handling

I was just playing around with event listeners with DOM and javascript and did notice this: function chained(msg) { console.log(msg, event); } function onClick() { chained('the body was clicked'); } document.body.addEventListener('click', onClick); Now the funny thing...this will output: "the body was clicked, (MouseEvent)" Then I ask, why? how does it passes the event object without sending it on the chained call? function chained(msg) { console.log(msg, namedEventObj); //throw error namedEventObj is not defined } function onClick(namedEventObj) { console.log(event); //outputs (MouseEvent);

Surprised, I am encountering this weird issue while submitting form from JS. Issue: Consider a simple form submitted using two ways from a submit button and an anchor link <form method="POST" action="page.html" name="foobar" id="test"> <input type="text" /> <input type="submit" /> </form> <a href="#" onclick="document.getElementById('test').submit();">click me</a> Function catching the submit event document.getElementById('test').onsubmit = function() { // Same result with // * document.foobar.onsubmit // * document.forms['foobar'].onsubmit alert('foobar'); return false; } Now, when the form

I want to add an event handler to jqGrid (for the onSelectRow event) but after the grid has already been created on the page i.e. I cant hardcode it into the initial jqGrid definition. I have tried using setGridParam to set an event handler for onSelectRow but that didnt work :( $('#list').jqGrid('setGridParam', { onSelectRow: function(id){ alert(id); } } ); The jqGrid docs are quite difficult to get what you want out of them and I havent found anything regarding this problem. I just tested to use $('#list').jqGrid('setGridParam', { onSelectRow: function(id){ alert(id); } } ); in my code and

I have a listview that generates thumbnail using a backgroundworker. When the listview is being scrolled i want to pause the backgroundworker and get the current value of the scrolled area, when the user stopped scrolling the listview, resume the backgroundworker starting from the item according to the value of the scrolled area. Is it possible to handle scroll event of a listview? if yes how? if not then what is a good alternative according to what i described above? You'll have to add support to the ListView class so you can be notified about scroll events. Add a new class to your project

I'm messing around with touch events on a touch slider and I keep getting the following error: Ignored attempt to cancel a touchmove event with cancelable=false, for example because scrolling is in progress and cannot be interrupted. I'm not sure what is causing this problem, I am new to working with touch events and can't seem to fix this problem. Here is the code handling the touch event: Slider.prototype.isSwipe = function(threshold) { return Math.abs(deltaX) > Math.max(threshold, Math.abs(deltaY)); } Slider.prototype.touchStart = function(e) { if (this._isSliding) return false; touchMoving

I am working on my keystroke logger for personal interest and asked a question related to this about yesterday; While loop using a lot of CPU . The issue with the program was that it took too much CPU Usage, and people have suggested to make the inputs key-event based. Since I'm new to the Win32 API, I try to look for references and tutorials that will tell me how to create keyboard inputs as event-based, rather than poll based. But the problems is I could not found any solid examples or references, as it was quite difficult to understand for a complete newbie. Most of them mentioned that the

I want to handle the event when a value is changed in a ComboBox in a DataGridView cell. There's the CellValueChanged event, but that one doesn't fire until I click somewhere else inside the DataGridView . A simple ComboBox SelectedValueChanged does fire immediately after a new value is selected. How can I add a listener to the combobox that's inside the cell? The above answer led me down the primrose path for awhile. It does not work as it causes multiple events to fire and just keeps adding events. The problem is that the above catches the DataGridViewEditingControlShowingEvent and it does