How to set a template for numbers in Angular?

Question

css

How to set a template for numbers so that instead of just the number 1, 0001 is written
And if it is not filled, simply 0000 is written

<div class="form-group">
      <label >Пример </label>
      <input type="number" min="0" max="9999" step="1" ng-model="number" >
</div>
<div>{{number}}</div

Answer 1

Use the search engine before the question on the toaster :)
perfect solution

Answer 2

something like jsbin.com/sadezoxowi/1/edit?html,js,console,output

Answer 3

When changing the model by keyup, you can call a function analogous to sprintf, or format (their implementation can be found)