使用angular js在输入字段中仅允许使用逗号分隔的数字

Question

I am using angular js and below is my code which allows only numbers separated by comma.But regex which I used allows user to enter 1,,,2.

Is there any way so that I can restrict user to enter only one comma after each number?

Plunker - http://plnkr.co/edit/g1X9ldVuH4ZewAlumM1P?p=preview

  function NumberValidator() {
    return {
        require: '?ngModel',
        link: function(scope, element, attrs, ngModelCtrl) {
            if (!ngModelCtrl) {
                return;
            }

            ngModelCtrl.$parsers.push(function(val) {
                var clean = val.replace(/[^\d+(,\d+)*$]/g, '');
                if (val !== clean) {
                    ngModelCtrl.$setViewValue(clean);
                    ngModelCtrl.$render();
                }
                return clean;
            });

            element.bind('keypress', function(event) {
                if (event.keyCode === 32) {
                    event.preventDefault();
                }
            });
        }
    };

Answer 1

Remove the clean part and replace the if condition with,

if (!/^\d+(?:,\d+)*$/.test(val)) {

This code would test whether the given value is in 1,2,3 or 1 or 3,4 formats or not.

Example:

 console.log(!/^f+$/.test('ff')) console.log(!/^f+$/.test('df')) 

Think you want something like this,

str.replace(/[^\d,]|^,+|,+$|,+(?=,)/gm, '')

PLNKR