「jquery」 one 的用法

    var n = 0;
   $("div").one("click", function(){
     var index = $("div").index(this);
     $(this).css({ borderStyle:"inset",
                   cursor:"auto" });
     $("p").text("Div at index #" + index + " clicked." +
                 "  That's " + ++n + " total clicks.");
   });

DEMO