Firefox and IE are compatible with JS script writing. Summary _ javascript skills

Window. event compatible Script 1. 2. shield Form submission events. 3. get event source 4. add event compatibility 5. method 6 for registering innerText in Firefox. length 7. child controls under the parent control 8. xmlHttp 1. window. event compatibility script

Function getEvent () {// gets browser events, and is compatible with ie and ff writing.
If (document. all) return window. event;
Func = getEvent. caller;
While (func! = Null ){
Var arg0 = func. arguments [0];
If (arg0 ){
If (arg0.constructor = Event arg0.constructor = MouseEvent)
(Typeof (arg0) = "object" & arg0.preventDefault & arg0.stopPropagation )){
Return arg0;
}
}
Func = func. caller;
}
Return null;
}

Before each event is used, Firefox needs to use getEvent () to obtain it. Otherwise, it is null.

2. Shield Form submission events

Event. returnValue = false; // for IE

Evt. preventDefault (); // for firefox

3. Obtain the event Source

Var source = event. srcElement // IE

Var source=event.tar get // firefox

4. Add event compatibility

Function addEvent (oElement, sEvent, func ){
If (oElement. attachEvent ){
OElement. attachEvent (sEvent, func );
}
Else {
SEvent = sEvent. substring (2, sEvent. length );
OElement. addEventListener (sEvent, func, false );
}
}

Usage: addEvent (window, "onload", Start );

5. How to register innerText in Firefox

// Register firefox innerText
HTMLElement. prototype. _ defineGetter _ ("innerText ",
Function (){
Var anyString = "";
Var childS = this. childNodes;
For (var I = 0; I if (childS [I]. nodeType = 1)
AnyString + = childS [I]. tagName = "BR "? '\ N': childS [I]. innerText;
Else if (childS [I]. nodeType = 3)
AnyString + = childS [I]. nodeValue;
}
Return anyString;
}
);
HTMLElement. prototype. _ defineSetter _ ("innerText ",
Function (sText ){
This. textContent = sText;
}
);

6. Length: the length of FireFox must be "px". IE doesn't matter.

7. Sub-control under the parent control: IE is "children", FireFox is "childNodes"

8. XmlHttp

In IE, the content of the XmlHttp. send (content) method can be empty, while firefox cannot be empty. send ("") should be used; otherwise, error 411 may occur.