[問題] onreadystatechange 在 IE8 與 Firefox 4 行為不一樣
showDeviceValue() 在 IE8 與 Firefox 4.0.1 的行為不一樣，有人知道為什麼嗎?...
//Example Code
var requests = new Object;
window.onload = function(){
var buttons = document.getElementsByTagName("input");
if(buttons == null)
{
alert("no any button!");
return;
}
var re = new RegExp(/^btn(\d+)$/);
for(var i = 0; i < buttons.length; ++i)
{
var btn = buttons[i];
matches = re.exec(btn.id);
if(matches == null)
continue;
requests[matches[0]] = createRequest(); //XML HTTP Request
requests[matches[0]].onreadystatechange = function(ev){
showDeviceValue(ev, btn, document.getElementById("td" + matches[1]));
}
buttons[i].onclick = refreshDeviceValue;
}
}
function showDeviceValue(ev, btn, td)
{
var theEvent = ev ? ev : window.event;
var theSrc = theEvent.target ? theEvent.target : theEvent.srcElement;
//in Firefox 4.0.1: theSrc != null
//in IE8: theSrc == null
}
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