請問這種source code是用在哪的?
1.
if( window.addEventListener )
{
window.addEventListen....
}

2.
function rolling(event) {
var delta = 0;
delta = -event.detail/3;
if( delta == -1 ) { //scroll forward
pagedown( 15, 24 );
}
else { //scroll backwa...
}

3.
function pagedown( nIterations, nInterval ){
var i=0,
t = setInterval(
function() {
if( i++ > nIterations) {
clearInterval( t );
}
else {
if( i < 6 ) { px = 10 }
else if( i ...
}
}
}


Code 因為某些因素隱藏一些了

請問是 JS 還是 CSS? 如果是 JS 要怎麼把這些函數運用在FIREFOX?

這是 JS

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