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nikgpuec
nikgpuec

Reputation: 45

Disable arrow keys for number input using angularjs

I want to disable the up and down keys for a number input through angularjs directive (or otherwise).
Note: I don't want to change the input type to text as I have been asked not to. I already removed the spinners too. I am new to angular so don't know much about it. I googled through all the links I could find but they were mostly about hiding the spinners and not about disabling the arrow keys. I got this code from some other link. This disables the mousewheel for the same. If some changes to this can be done, that will be great.

module.directive('input',function() {
return {
    restrict: 'E',
    scope: {
        type: '@'
    },
    link : function (scope, $element) {
        if (scope.type == 'number') {
            $element.on('focus', function () {
                angular.element(this).on('keyup', function (e) {
                    e.preventDefault();
                });
            });
            $element.on('blur', function () {

                angular.element(this).off('keyup');
            });
        }
    }
}
});

Upvotes: 3

Views: 6314

Answers (2)

Ilan Frumer
Ilan Frumer

Reputation: 32357

If you want to disable up/down arrow keys globally for all input[number] elements:

$(document).bind('keydown', function(event) {
  var target = event.srcElement || event.target;
  var tag = target.tagName.toUpperCase();
  var type = target.type.toUpperCase();
  if (tag === 'INPUT' && type === 'NUMBER' && 
     (event.keyCode === 38 || event.keyCode === 40)) {
    event.preventDefault();
  }
});

Or you can bind it to a single element with a directive:

.directive('disableArrows', function() {

  function disableArrows(event) {
    if (event.keyCode === 38 || event.keyCode === 40) {
      event.preventDefault();
    }
  }

  return {
    link: function(scope, element, attrs) {
      element.on('keydown', disableArrows);
    }
  };  
});

template:

 <input type="number" disable-arrows />

Upvotes: 5

Mimo
Mimo

Reputation: 6075

You can change your directive to:

module.directive('input',function() {
return {
    restrict: 'E',
    scope: {
        type: '@'
    },
    link : function (scope, $element) {
        if (scope.type == 'number') {
            $element.on('focus', function () {
                angular.element(this).on('keyup', function (e) {
                    if (event.keyCode === 38 || event.keyCode === 40) {
                       e.preventDefault();
                    }
                });
            });
            $element.on('blur', function () {

                angular.element(this).off('keyup');
            });
        }
    }
}
});

Upvotes: 1

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