Checking Events for Key and Mouse Button Pressed : Key Event « Event « JavaScript DHTML

Checking Events for Key and Mouse Button Pressed

JavaScript Bible, Fourth Edition
by Danny Goodman 

John Wiley & Sons CopyRight 2001

<TITLE>Button and Key Properties</TITLE>
function checkWhich(evt) {
    evt = (evt) ? evt : (window.event) ? window.event : ""
    if (evt) {
        var thingPressed = ""
        var elem = ( ? : evt.srcElement
        if (evt.which) {
            thingPressed = evt.which
        } else {
            if (elem.type == "textarea") {
                thingPressed = evt.keyCode
            } else if (elem.type == "button") {
                thingPressed = evt.button
        status = thingPressed
    return false
<H1>Button and Key Properties</H1> (results in the status bar)
<P>Mouse down atop this
<INPUT TYPE="button" VALUE="Button" onMouseDown="checkWhich(event)"> 
this link</A> or this
<INPUT TYPE="button" VALUE="Button" onMouseDown="checkWhich(event)"> 
with either mouse button (if you have more than one).</P>
<P>Enter some text with uppercase and lowercase letters:
<TEXTAREA COLS=40 ROWS=4 onKeyPress="checkWhich(event)" WRAP="virtual">


Related examples in the same category

1.'ctrlLeft' Example
2.'ctrlKey' Example
3.'shiftKey' Example
4.'shiftLeft' Example
5.'keyCode' Example
6.Catches and manages the keyboard's events
7.Key and Character Codes vs. Event Types
8.Shift key pressed?
9.Unicode of the key pressed
10.Keyboard Event Handler Laboratory
11.Displaying keyCode Property Values
12.Displaying charCode and keyCode Property Values
13.Checking Events for Modifier Keys
14.Handle arrow key, control, alt
15.Get key code in key down event (IE)
16.Press F1 to trigger the help event