This is disabling all scroll functionality.
var myScroller = new IScroll('#wrapper');
myScroller.disable();
Is there any way to stop scrolling(not disable iscroll)?
var myScroller = new IScroller('#wrapper');
myScroller.stopScroll() ?
myScroller.preventScroll() ?
myScroller.stayFixed() ?
Did you try reading the documentation? Don't just try to guess the name of a function. Perhaps this will help you:
IScroll isn't designed to prevent scrolling, so if that's what you're using it for, ditch it. Even if you still want IScroll for when scrolling is enabled, perhaps this could help you: How to disable scrolling temporarily?