I'm not good at English,but I'm trying to describe it clearly,please keep pacience.
the suggestion never appear when I type something such as "abc" in the field,but when I delete them all with "backspace" key quickly it appears.it will not appear if I delete them slowly.I test it with IE and firefox,they are same result.
another question:it seems the start_check never works when I use ajax fetch data.it gets data when I input the first character despite I set it like this:
this.start_check = 2;
it will overload the server.
here is the demo:http://18.104.22.168/tickets/index_ajax.html[^]
thank any ideas.