谷歌地方适当的事件自动完成选择鼠标

I am using google's autocomplete api just like in the docs and it works fine. However I have a form submitted with ajax every time it changes . It works fine but when I use the autocomplete for the location with the mouse (choosing a place with a click). It trigger the onchange and submits the form before The location is set.I am using google's autocomplete api just like