NN4 Event Capture and Release 1 : Browser Event « Window Browser « JavaScript DHTML

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JavaScript DHTML » Window Browser » Browser Event 
NN4 Event Capture and Release 1

/*
JavaScript Bible, Fourth Edition
by Danny Goodman 

John Wiley & Sons CopyRight 2001
*/


<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
function setDocCapture(enable) {
    if (!enable) {
        document.captureEvents(Event.CLICK)
    else {
        document.releaseEvents(Event.CLICK)
    }
}
function doMainClick(e) {
    if (e.target.type == "button") {
        alert("Captured in top document")
    }
}
document.captureEvents(Event.CLICK)
document.onclick=doMainClick
</SCRIPT>
</HEAD>
<BODY>
<B>Basic document-level capture of Event.CLICK</B>
<HR>
<FORM>
<INPUT TYPE="checkbox" onMouseDown="setDocCapture(this.checked)" CHECKED>Enable Document Capture
<HR>
<INPUT TYPE="button" VALUE="Button 'main1'" NAME="main1" 
    onClick="alert('Event finally reached Button:' + this.name)">
</FORM>
<LAYER ID="layer1" LEFT=200 TOP=150 BGCOLOR="coral">
<HEAD>
</HEAD> 
<BODY
<FORM> 
<BR><P><INPUT TYPE="button" VALUE="Button 'layerButton1'" 
    NAME="layerButton1" 
    onClick="alert('Event finally reached Button:' + this.name)"></P> 
<P><INPUT TYPE="button" VALUE="Button 'layerButton2'" 
    NAME="layerButton2" 
    onClick="alert('Event finally reached Button:' + this.name)"></P>
</FORM>
</BODY>
</LAYER>
</BODY>
</HTML>

           
       
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7. NN4 Redirecting Events
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10. NN6 Event Capture and Bubble
11. Preventing Bubble and Capture
12. Cancelling and Redirecting Events in NN6+
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