in my humble opinion, slipping left and right on PC is not particularly recommended.
personally, I think you can quarrel with the product
would rather put a <
guide the user to click and then exhale delete button rather than slide left, the browser left slide in addition to the problems mentioned earlier, but also conflict with the selected Chinese text.
mouseover display
mouse event to judge x at mousedown and x at mousemove. Display
if mousemove x is less than mousedown x