How to solve flicker on iPad when event delegation is used?
问题 When using the method of event delegation, we set the event handler on a higher level element (parent or grandparent), but this has an issue on iPad's Safari: if the parent element has a click handler, when the user touches anything inside this element, the whole region will gray out (on iOS 5.1), or flicker (on iOS 6). So, if the parent or grandparent is 300 x 300 pixel, and the link is just a word, say 60 x 20 pixel, then when the user touches any where inside the parent (except the link),