Contrasting document and $document in AngularJS

What sets apart the usage of document from $document in Angular application development? I have come across recommendations to opt for Angular's counterparts like: $window over window or $timeout instead of setTimeout.

But... why is this advised? I initially assumed that window, setTimeout, and document would be faster as they are native and do not require traversal through the Angular framework code.

Is it more advantageous to utilize Angular's alternatives rather than JS' native functions and objects?

javascriptangularjs

Answer №1

Utilizing the angular services for $document and $window ensures that your code is prepared for unit testing. Through dependency injection, you have the ability to incorporate mock versions of $document or $window in your test scenarios.

The potential performance consequences mentioned are not a cause for concern.

Answer №2

$elem refers to a jQuery element, $(element).

In essence, you can achieve the following:

$elem[0].attribute = element.attribute

For reference, check out this example.

Answer №3

It is a constant truth that: $window.document will always be equivalent to $document[0]

Answer №4

Utilizing angular wrappers is recommended to maintain synchronization between model and view without any disruptions.

For instance, when using setTimeout, it is necessary to manually call $digest() on the scope in order to update the values displayed in the view after making changes to the model. Conversely, with $timeout, this step is unnecessary as the scope automatically refreshes once the function has completed.

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