Enter a negative number in the input number field and validation with ng-pattern-restrict

Question

I'm having problems with ng-pattern-restrict I have an input number field with ng-pattern-restrict = "^. {0,13}? $" But when I wanted to enter a negative number, I tried two ways:

ng-pattern-restrict = "^ \ - \ d {0,13}? $": This way, the negative number is good, but it does not allow you to enter positive numbers, because the character at the start must be (-)

ng-pattern-restrict = "^ \ d {0,13} (\ - \ d {0,13})? $": this method allows to enter a positive number, but it does not allow you to enter negative numbers, because it requires a number in front Looking forward to having someone help me the other way, Thanks and Best Regards

Answer 1

angular.module('testApp', ['ngPatternRestrict'])
  .controller('TestCtrl', function(){
    console.log('testing')
  })

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.7/angular.min.js"></script>

<script
src="https://cdn.rawgit.com/AlphaGit/ng-pattern-restrict/cb7ba5dd/src/ng-pattern-restrict.js">
</script>
<div ng-app="testApp" ng-controller="TestCtrl as tc">
  <input type="text" ng-model="tc.data" ng-pattern-restrict="^\-?\d{0,13}?$"/>
  
  {{tc.data}}
</div>

Use a ? for 0 or 1 of a match for the negative