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Two choices, one is

 document.getElementsBy

Id("your_id");
Then peel the garlic, of course getElementsByClassName belongs to the same solution as this.

The second one, if it is in the directive, it is also possible

angular.element(this)

Then peel the garlic...

This is not possible. I found a way. You can have a scope in the custom tag. Use $rootScope to get the attributes and then share them, so that they can be used outside the custom tag.