关于props属性，不太明白
在jQuery1.10.1里的props都是不同的数组

①把他们分成数组的用途是什么

②是不是由于封装的原因，这里的props不算重名

props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),

fixHooks: {},

keyHooks: {
props: "char charCode key keyCode".split(" "),
filter: function( event, original ) {

// Add which for key events

if ( event.which == null ) {
event.which = original.charCode != null ? original.charCode : original.keyCode;
}

return event;
}
},

mouseHooks: {
props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
filter: function( event, original ) {
var body, eventDoc, doc,
button = original.button,
fromElement = original.fromElement;

// Calculate pageX/Y if missing and clientX/Y available

if ( event.pageX == null && original.clientX != null ) {
eventDoc = event.target.ownerDocument || document;
doc = eventDoc.documentElement;
body = eventDoc.body;

event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
}

[解决办法]
用于以后调用数组内的东西

prop[1]类似