CODEWITHSUNDEEP
javascriptregexangularjsvalidation
Anky
Anky

Reputation: 270

how to check input value has only numbers in angular?

I want to compare a value of a field centerCode which is entered by a user into an input field. Then I want to check if it is a number and show the appropriate alert accordingly. I am not able to compare the value or variable number with the variable code . 

 var numbers =/^[0-9]+$/;
 var code = $scope.Nuser.centerCode;
 alert(code);
 if(code.val(numbers))
 {
     alert(code.val(numbers));
 }
 else
 {
     alert("enter numbers only");
 }

Upvotes: 2

Views: 16416

Answers (4)

Vaibhav Pachauri
Vaibhav Pachauri

Reputation: 2671

I would suggest you to use ng-pattern instead . Something like following :

<input type="text" ng-pattern="/^[0-9]{1,7}$/" ng-model="inputNumber"/>

It will only allow the user to enter the number.

You can use angular.isNumber to check if the entered value is a number or not. Try something like the following :

if(angular.isNumber($scope.Nuser.centerCode)){
   alert('Center Code is a number');
}else {
   alert('Center Code is not a number');
}

Hope this will do the trick.

Upvotes: 2

Jonathon Blok
Jonathon Blok

Reputation: 749

You're along the right lines. Numbers needs to be a Regex though, and you need to use the test function to check the input against it. The test function will return true if the string is all numbers, or false if there is anything else in it.

var numbers = new RegExp(/^[0-9]+$/);
var code = $scope.Nuser.centerCode;

if(numbers.test(code))
{
    alert('code is numbers');
}
else
{
    alert("enter numbers only");
}

Upvotes: 3

Shoaib Ahmed
Shoaib Ahmed

Reputation: 781

try this hope this is what you are looking for 

 if(angular.isNumber(value))
       { 
        //your code here 
       }

Upvotes: 0

Khalid
Khalid

Reputation: 4808

You can simply convert string to number and test is it's NaN (Not a Number)

isNaN(+$scope.Nuser.centerCode)

if it's false it means your centerCode contain only numbers

Upvotes: 0

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