它被称为'冒泡'。按钮位于div内部，因此它正在执行按钮，然后向上链接到div。在按钮功能中添加event.stopPropagation（）。

It's called 'bubbling'. The button is inside the div so it's executing button then up the chain to div. Add event.stopPropagation() inside the button function.

$("#"+comListID+"btn").click(function(event){
    event.stopPropagation();
    addNewArr(comListID);
});