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Does anyone know how to make angular fire an event when the view has changed? Or right when a view is requested and downloaded? I'm trying to add loading animations for when pages change.
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Change detection is invoked automatically using zones. The framework hooks into internal browser API calls and performs CD after asynchronous events. Two-way data binding is supported which means that single pass of change detection is not enough. AngularJS runs digest cycles until the model stabilizes.
What is the angular JS watch function? The angular JS $watch function is used to watch the scope object. The $watch keep an eye on the variable and as the value of the variable changes the angular JS $what runs a function. This function takes two arguments one is the new value and another parameter is the old value.
Overview. Compiles an HTML string or DOM into a template and produces a template function, which can then be used to link scope and the template together. The compilation is a process of walking the DOM tree and matching DOM elements to directives. Note: This document is an in-depth reference of all directive options.
Definition and UsageThe ng-change event is triggered at every change in the value. It will not wait until all changes are made, or when the input field loses focus. The ng-change event is only triggered if there is a actual change in the input value, and not if the change was made from a JavaScript.
Take a look at this thread it looks like the $httpProvider.responseInterceptors are a good place to add this type of thing.
This fiddle shows a good example on where to add code to start/stop a spinner for ajax requests. This fiddle is similar but actually shows and hides a 'Loading...' div.
If you only want to show a spinner when views change you can limit your start/stop code to when content-type equals text/html similar to what this post shows with application/json.
Note: in my tests it looks like the headersGetter()['Content-Type'] in the spinnerFunction is omitted when retrieving my .html files whereas it is populated when making service calls.
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