jquery autocomplete show suggestion on focus

Problem: jquery autocomplete does not show a list of suggestions on click
Note: Please do not mix up jquery.ui autocomplete with jquery.autocomplete plugin.

Here is a solution that may help:

     $("#inputfield").autocomplete(val,{
             selectFirst: true,
             autoFill:true,
             minChars:0,
             cacheLength:1,
             matchContains: true,
             mustMatch: true,
         }).bind('focus', function(){
           $(this).click();
         });