Differences between addevent () and addeventlistner ()

Source: Internet
Author: User

// Bind events

Function addevent (El, name, FN ){

If (El. addeventlistener) return El. addeventlistener (name, FN, false); // this sentence will be executed in Firefox.
Return El. attachevent ('on' + name, FN); // execute this sentence in IE


The attachevent method attaches other processing events to an event. (Mozilla series not supported)

The addeventlistener method is used in the Mozilla series.


Document. getelementbyid ("BTN"). onclick = Method1;
Document. getelementbyid ("BTN"). onclick = method2;
Document. getelementbyid ("BTN"). onclick = method3;

If this is the case, only medhot3 will be executed.

Written as follows: var btn1obj = Document. getelementbyid ("btn1 ");
// Object. attachevent (event, function );
Btn1obj. attachevent ("onclick", Method1 );
Btn1obj. attachevent ("onclick", method2 );
Btn1obj. attachevent ("onclick", method3 );

The execution sequence is method3-> method2-> Method1

If the Mozilla series does not support this method, you need to use addeventlistener.

VaR btn1obj = Document. getelementbyid ("btn1 ");
// Element. addeventlistener (type, listener, usecapture );
Btn1obj. addeventlistener ("click", Method1, false );
Btn1obj. addeventlistener ("click", method2, false );
Btn1obj. addeventlistener ("click", method3, false );

The execution sequence is Method1-> method2-> method3

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