Dojo learning points_dojo-JS Tutorial-php.cn

Dojo learning points_dojo

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Release： 2016-05-16 18:20:28

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Since I need to learn the ArcGIS Server JavaScript API, ESRI uses the JavaScript open source framework Dojo in this API, so I first learned some knowledge of Dojo to prepare for future work.
In fact, there are many open source JavaScript frameworks, such as the earliest prototype, the very practical jQuery, Yahoo's Yui, the stunning ExtJS, etc. As for why ESRI adopted Dojo, we don't have to guess. There must be someone who has a reason, so study hard. Dojo is the last word.
Before learning Dojo, you must master some necessary JavaScript knowledge, such as json, etc. Since I thought I could learn JavaScript well in the past, and I am just getting started with ExtJS, it is relatively easier to learn Dojo.
The latest version of Dojo is now version 1.5.0, and you can download the dojo-release-1.5.0.zip compressed file on its official website.
Getting back to the subject, here are some learning points for you, just treat it as a personal note.

Copy code The code is as follows:

 
1, use dojo.require in a similar way to C programming# Include or import in Java to load the required components 
 such as dojo.require("dojo.parser"); dojo.require("dijit.form.Button"); 
2, cross-domain custom module 
Dojo configuration, djConfig="baseUrl:'./'" 
Register module path, dojo.registerModulePath("dtdg","./dtdg"); 
Load custom module, dojo.require ("dtdg.foo"); 
3. The local toolbox module 
 directly loads the custom module, dojo.require("dtdg.foo"); 
4. Register events for the object 
dojo .connect(); 
5, convert between json and string
dojo.fromJson(/*String*/ json);//Return JavaScript object, json object
dojo.toJson(/*Object */ json, /*Boolean*/ prettyPrint);//Return string
6, Ajax communication
dojo.xhrGet(/*Object*/ args);dojo.xhrPost(/*Object*/ args) ; 
dojo.xhr(/*String*/ method, /*Object*/ args, /*Boolean?*/ hasBody); 
7, localization
djConfig="dojo.local:'zh '" 
8, controls, layout, etc. are all in dijit 