When AngularJS triggers an $onEval, is there any way to immediately tell what values in this scope have changed?
I want to sync changes to the server automatically. Currently I'm detecting changes in a scope.$onEval
handler by JSON serializing the applic开发者_StackOverflow社区ation state and comparing that to a previously serialized copy, using diff-match-patch.
I was wondering if AngularJS has anything built in to make this more efficient.
You could use multiple $watch'es instead of a single $onEval
(note that $watch can take a function as an argument instead of a string/expression, and in version >=0.10.0 the watched values are compared using angular.Object.equals). Other than that, I don't know any AngularJS mechanism that would be useful for this.
I am working on something similar. Like @psyho suggested I am using $watch to catch the changes.
scope.$watch("dataObject",function (newValue, oldValue) {
//calculate changes
//send the changes to the server
});
I then use the logic from jquery diff to calculate what changes were made.
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