var Element = { toggle:function(eleID) { var element = $(eleID); var dis = element.style.display; element.style.display = dis=="none"?"block":"none" } }; <div id="divid">看的到我么</div> //Element.toggle("divid");
2.
String.prototype.diss = function() { var element = document.getElementById(this); var dis = element.style.display; element.style.display = dis=="none"?"block":"none"; } <div id="divid">看的到我么</div> //"divid".diss();