Clear and clear the previous (Click event app)

Clear previous:

Oldli.classname= ';//The original activity event was cleared

oldli=this;//the current copy to the Oldli;

This.classname= ' active ';//set current as active;

Clear all:

for (Var i=0;i<oli.length;i++) {
Oli[i].classname= ";
}//Clear All
Oli[num].classname= ' active ';//set current as active;

Clear the previous can reduce data requests, when the data too much, can quickly react;

Clear all, easy to use, but when there is too much data, increase the request time.

Clear and clear the previous (Click event app)