DOJO toolkit ArcGIS API for JavaScript

How much DOJO do I need to know in order to use the ArcGIS API for JavaScript?

dojo.require: -

It is very similar to the <script> tag on an HTML page and like JavaScript, we imports resources into HTML page.

// AMD
require(["esri/map", ... ], function(Map, ... ){ ... });

// legacy

dojo.ready :-

It is very similar to <body onload="">. It is initializing to block after the page has finished loading.

// legacy

// AMD
require(["dojo/ready"], function(ready){
  ready(function(){     });

dojo.connect: -

It is very similar to JavaScript elements functions looks like,
1.      Element.addEventListener and
2.      Element.attachEvent.

It registers a listener event on an element on the page and returns results.
// legacy
dojo.connect(myMap, "onLoad", myLoadHandler);

// AMD
require(["esri/map", "dojo/on"], function(Map, on) {
  on(myMap, "load", callback);

dojo.byId: -

It is very similar to the JavaScript document.getElementById(id) function and this function returns the first HTML element with the argument ID.

// legacy
dojo.byId("myInputField").value =;


Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link..

My Tech Blog -
My Books - Book 1 and Book 2 Powered by Blogger.