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See also:

• Deferred and asynchronous processing – dojo/Deferred

• Ajax with Dojo

• DojoToolkit: xhtGet

• DojoToolkit: dojo/request/xhr (1.8)

• Basic Access Authentication

• sitepen - Introducing dojo/request - 2012-08-21

Testing REST Calls

There are a number of ways to test REST calls to a REST provider and it is recommended to do this

before embarking on writing application code to ensure that the results will be as expected. My

current favorite tool is called "Postman" and can be found:

http://www.getpostman.com/

This is a Google Chrome app/plugin.

Another useful tool for REST client testing is "soapUI".

Dojo utility

dojo/_base/lang

This is truly a work horse of Dojo especially for JavaScript function calling. The first item we will

discuss is "hitch".

var func2 = lang.hitch(context, func1);

What hitch does is take an object that will serve as a context. For example "this". The second

parameter is a reference to a function. What hitch returns is a new function which, when called,

will invoke the passed in function under the context of the passed in context. If you understand

that, great!! Now you see the power of lang.hitch(). If you don't understand that, then it is back to

the JavaScript manuals for you.

A friend to "hitch" is its buddy called "partial".

var func2 = lang.partial(func1, "val1", "val2");

Now … if when func1() is called, it NORMALLY expects a parameter called "myOriginalParm1"

we can provide an implementation of func1() which now accepts:

func1 = function(myNewParm1, myNewParm2, myOriginalParm1)

So what we have done is forced the func1 to accept some additional parameters beyond the ones

that will be supplied by its real caller.

DOM Access

Since Dojo is primarily designed to run within the context of a browser and the primary means of

programming a browser environment is the manipulation of the DOM, it makes sense that a lot of

function has been added to Dojo for DOM manipulation and access.

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Servis-Rhino 4211B Betriebsanweisung Seite 142