How to edit input style by using ng-pattern

Question

How to edit input style by using ng-pattern

902 Views Asked by Robdll At 21 October 2024 at 06:30

I made a small js here

I also add the code to the Stack overflow snippet but for some reason it doesn't work to me

var myApp = angular.module('myApp',[]);

function MyCtrl($scope) {
    $scope.my_model = ''
   $scope.my_regex = '/^[A-Za-z]+(\,[A-Za-z]+)*$/';
    $scope.my_placeHolder = 'write something';
}

.invalid input[name=my_input]{   
  border: 2px solid red;
}


input[name=my_input] {
  border: 2px solid blue;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-controller="MyCtrl">
  <form name="contentForm">
    <input type="text"
         name="my_input"
         ng-class="{ 'invalid': contentForm['my_input'].$invalid }"
         ng-model="my_model"
         ng-pattern="{{my_regex}}"
         placeholder="{{my_placeHolder}}">
  </form>
</div>

I tried to use the code snippet but weren't working >,<

So, my goal is to edit the input border (let's make it red for purpose) if the input text doesn't pass the regex rule.

The regex should accept any comma separated string.

I tried a bunch of stuff, but I can't figure out what am i doing wrong.

UPDATE: REGEX EDITED

Original Q&A

There are 3 best solutions below

Liyaquet Hussain On 06 July 2017 at 09:57

Try with This

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-controller="MyCtrl">
  <form name="contentForm">
    <input type="text"
         name="my_input"
         ng-class="{'invalid': contentForm['my_input'].$error.pattern  }"
         ng-model="my_model"
         ng-pattern="'( )*,( )*[a-zA-Z]+)*'"
         placeholder="{{my_placeHolder}}">
  </form>
</div>

Gustaf Gunér On 06 July 2017 at 09:26

If ng-pattern fails, which means the regex is not fulfilled, a class ng-invalid-pattern is added to the <input> element. This means that you should be able to add the the red border to an input field that isn't passing the ng-pattern with the following CSS:

input[name=my_input].ng-invalid-pattern{
    border: 2px solid red;
}

**Nilesh Khisadiya** · Accepted Answer

In your code snippet, ( )*,( )*[a-zA-Z]+)* regex is not valid. you can test your regex here or other online tool. Here i tried with simple numeric regex and it is working fine.

function formCtrl($scope){
     $scope.my_model = 'test,dfsdf,dfs'
    $scope.my_placeHolder = 'write something';
    $scope.my_pattern="/^[A-Za-z]+(\,[A-Za-z]+)*$/";// here you replace your regex which you want 
}

.invalid{   
  border: 2px solid red;
}

.valid {
  border: 2px solid blue;
}

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<html>
<div ng-app ng-controller="formCtrl">
<form name="myForm" >
    <input type="text" ng-model="my_model" name="my_input" ng-pattern="
    {{my_pattern}}" ng-class="{'invalid': myForm.my_input.$error.pattern, 'valid': !myForm.my_input.$error.pattern }"
    placeholder="{{my_placeHolder}}"
    />
    <span ng-show="myForm.my_input.$error.pattern">Not a valid input!</span>
   
</form>
</div>
</html>

How to edit input style by using ng-pattern

There are 3 best solutions below

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