Tracking movements of the mouse in Javascript

To get the position of the mouse, clientY and clientX properties are used in Internet Explorer. pageX and pagey properties in for all other browsers. Here is a complete listing showing the current position of the mouse in the browser’s status bar. <script language="JavaScript" type="text/JavaScript"> function showPosition(e) { var x, y; if (window.event) { x […]
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Submitting a form when the Enter key is pressed using Javascript

To implement this functionality, use the key event listener. The code for the Enter key is 13. function checkKey(e) { var key; if (window.event) { key = window.event.keyCode; } else { key = e.keyCode; } if (key == 13) <a style="text-decoration: none;color: inherit;cursor: default" href="http://viagrageneric-price.com/">over the counter viagra cvs</a> { document.forms[0].submit(); } } window.onload <a […]
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Listen for keyboard events in Javascript

The keyboard events are not part of DOM Level 1 or 2, but what is canadian pharmacy email virus rifaximin canadian pharmacy efeito do cialis prescription for cialis online they are implemented in browsers lately. Access to events differs from general method (window.event in Internet Explorer) to Event parameter used for automatic function in all […]
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Attaching an event in Javascript

All major browsers support the method addEventListener (), which is part of the W3C model. The following example shows how to attach an event a button so that it works in all browsers: <script language="JavaScript" type="text/JavaScript"> function eventHandler() { window.alert("Event fired!"); } window.onload = function() { var button = document.getElementById("eventButton"); if (button.addEventListener) { button.addEventListener("click", eventHandler, […]
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Change images on mouse over and mouse out in Javascript

<script language="JavaScript" type="text/JavaScript"> function changeImage(name, url) { if (document.images[name]) { document.images[name].src = url; } } </script> <img name="myImage" src="inactive.gif" onmouseover="changeImage(‘myImage’, ‘active.gif’);" onmouseout="changeImage(‘myImage’, ‘inactive.gif’);" />
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Using a javascript event handler

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Delegates & Events in C# – Part 2 : Using Delegates to Specify Methods at Runtime

Delegates are used to specify the kinds of methods that can be used to handle events and to implement callbacks in your applications. They can also be used to specify static and instance methods that won’t be known until runtime. Suppose, for example, that you want to create a simple container class called a Pair […]
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Delegates & Events in C# – Part 1 : Introduction

In programming, you are often faced with situations where you need to execute a particular action, but you don’t know in advance which method, or even which object, you’ll want to call upon to execute that action. For example, a button might know that it must notify some object when it is pushed, but it […]
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BinaryFormatter serialization events in C#

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Using Keyboard Events to Call Methods in Actionscript

function onKeyPressed(evt:KeyboardEvent):void { switch (evt.keyCode) { case Keyboard.ENTER: box.play(); break; case Keyboard.BACKSPACE: box.stop(); break; case Keyboard.LEFT: box.prevFrame(); break; case Keyboard.RIGHT: box.nextFrame(); break; case Keyboard.SPACE: box.gotoAndStop(3); break; default: trace(“keyCode:”, evt.keyCode); } };
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Handling Events in c# .NET

To handle an event you need to subscribe to it by providing an event handler method whose return type and parameters match that of the delegate specified for use with the event. The following example uses a simple timer object to raise events, which results in a handler method being called. using System; using System.Collections.Generic; […]
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Creating event handlers in Javascript

We can create event handlers in two ways in javascript. We can call built in functions as the handler or we can call custom user defined functions as event handlers. Built-in functions: onClick="window.open(‘somefile.html’, ‘newWin’)"; User-defined functions: onChange="if (!checkVal(this.value, 1, 10)) { this.focus(); this.select(); }"; The handling function must be enclosed within either double or single […]
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Javascript event handlers

Event Handler Elements Actions onAbort Images When image loading has been interrupted. onBlur Windows, frames, all form objects When focus moves out of this object except hidden; e.g., when the cursor leaves a text box. onChange Input, select, and text areas When a user changes the value of an element and it loses the input […]
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Events in Javascript

Events are a part of almost all Web pages and they make the pages interactive and dynamic. Events are actions initiated by the user. Examples of events are submitting a form, mouse over a link or image. Event handling is JavaScript’s response to one of these user-initiated events. JavaScript can execute code in response to […]
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