javascript - AngularJS how to change ng-model binding to another element -

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how dynamically rebind elements ng-model (change ng-model subject)

for example have

<input type="text" ng-model="info"> <input type="text">

but after user interactions want modify 

<input type="text" ng-model="info"> <input type="text" ng-model="info">

or other variables. ideas how dynamically?

then make array.

in controller

$scope.info = [];

in html dynamically

<input type="text" ng-model="info[$index]">

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