document.getelementbyid vs dom.byid

Question

Here is some code

  var docDiv= document.getElementById("divId");

  var dojoDiv= dom.byId("divId");

what are difference between javascript's document.getelementbyid and dojo's dom.byid. which is one more faster. if you want to use dom we need to load dojo.js.

Answer 1

Here is the non IE version of Dojo's dom.byId :

dom.byId = function(id, doc){
            // inline'd type check.
            // be sure to return null per documentation, to match IE branch.
            return ((typeof id == "string") ? (doc || win.doc).getElementById(id) : id) || null; // DOMNode
        };

As you will note it uses getElementById.

Hope this answers your question.