$ parsers不使用space

Question

我有一个服装指令来设定百分比,例如: - 快乐:[90] - 悲伤:[10]

因此它只允许1到100.所以我不想允许任何字符等.我知道我可以使用ng-pattern等..但我不希望他们甚至添加一个字符所以我必须这样做.

它的工作原理,但我遇到的问题是空间不会触发$解析器,是否还有一个解决方法用于触发空间？

app.directive('numericOnly', function(){
    return {
        require: 'ngModel',
        link: function(scope, element, attrs, modelCtrl) {
            modelCtrl.$parsers.push(function (inputValue) {

                //Remove all non numeric values
                var transformedInput = inputValue.replace(/\D/g,'');

                //Remove all spaces
                transformedInput = transformedInput.replace(/\s/g, "");

                //Remove any leading zero
                if(transformedInput.substring(0,1) === '0') {
                  console.log('is zero');
                  if(transformedInput.length === 1) {
                    transformedInput = '';
                  } else {
                    transformedInput = transformedInput.substring(1, transformedInput.length);
                  }
                }

                //Make sure it is not over 100
                var numberCopy = parseInt(transformedInput);
                if(!isNaN(numberCopy)){
                    if(numberCopy > 100) {
                    console.log('bigger than 100');
                    numberCopy = 100;
                    transformedInput = String(numberCopy);
                  }
                 }

                //If changes done, then update modelCtrl
                if (transformedInput!=inputValue) {
                    modelCtrl.$setViewValue(transformedInput);
                    modelCtrl.$render();
                }

                //Return
                return transformedInput;
            });
        }
    };
});

Plunker:http://plnkr.co/edit/oKXExZ8lkHzUSqHKpm1n?p=preview

Answer 1

默认情况下,Angular修剪该ngModel值.因此,您需要向ng-trim输入元素添加指令,它不允许字符串两侧的空格.

<input type="text" numeric-only="" ng-trim="false" ng-model="nyNumber"/>

你不再需要这条线了

//Remove all spaces
transformedInput = transformedInput.replace(/\s/g, "");