for (var iBoth I < buttons.length;iPP) {
buttons[i].onclick=function(){
var myIndex=this.getAttribute("index");
var indexOffset=parseInt(myIndex-index)*(-600);
animate(indexOffset);
index=myIndex;
this.className="on";// this
}
}
for(var i=0;i<buttons.length;iPP){
buttons[i].onclick=function(e){
var myIndex=this.getAttribute('index');
var indexOffset=parseInt(myIndex-index)*(-600);
animate(indexOffset);
index=myIndex;
e.target.className='on';// this
}
}that's fine
I don't want to explain why e.target and this can, but buttons [I] can't but for (let i; i < buttons.length; PPi), and what's the difference between e.currentTarget and e.target.
Don't torture me
Brother, you don't quite understand the pointing problem of event and this. In an event, this points to the current element. For example, if you bind a click event to each button, then this refers to the current one you click on, and event.target is the current element, so the two are conceptually the same. On the other hand, currenttaret means that there is little difference between the current elements of the binding event, because the specific aspects used are different, so it depends on the requirements
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