Simple add graphics question

Question

I am new to javascript and the api and experimenting with the various samples on this site as a starting point. One thing I have tried is adding a graphic to a map using map.graphics.add. I am finding that when I contain the map.graphics.add part in the dojo connect statement (as per example 1 below) my script works - it plots a single point on the map at the specified coordinates. If, however I try a more functionally decomposed script as is presented in https://developers.arcgis.com/en/javascript/jsapi/map.html I get a blank map (see example 2.). I am sure this is something simple, but can't figure out what's wrong. Any ideas? Cheers, Ben Example 1. Example 2.

kenbuja · Accepted Answer

Actually, you can keep the ShowLocation function outside the init function. However, the variable "map" was declared inside the init function, so it was only usable with all the properties you set in that function. When you used the variable "map" in the ShowLocation function, you were in a sense creating another variable "map". Take a look at these articles that talk about the scopt of variables. This would work equally well. Notice where the variable "map" is declared. Create a Map

As a side note, if you're learning how to use the JavaScript API, I would recommend that you learn how to use the AMD style of coding. At some point in the future, using dojo.connect will be depreciated.