获取Angularjs自定义指令中的属性值

I am gonna get the count of letters in the textbox and show it in div tag which is featured by element directive .

我将在文本框中获取字母数，并以div标签显示，该标签由element指令表示。

  <input type="text" ng-model="name">
  <div counter-directive max-length="100" ng-model="name"></div>

div tag has to show something like this : 12/100 (12 is what we typed in input and 100 is the value of max-length )

div标签必须显示如下：12/100（12是我们输入的输入，100是max-length的值）

the problem is , I don't know how to get the value of max-length .

问题是，我不知道如何获得max-length的值。

here i have the example on jsfiddle

这里我有关于jsfiddle的例子

2 个解决方案

#1

Firsly, check your spelling. You've used lenght a couple times in your question.

首先，检查你的拼写。你在问题中已经使用了几次。

You can get the max-length attribute from the attrs object passed into the link function.

您可以从传递给链接函数的attrs对象中获取max-length属性。

link: function (scope, element, attrs) {
    var foo = attrs.maxLength;
}

#2

You just have to do this:

你必须这样做：

app.directive('counterDirective', function () {

return {

    restrict: 'A',
    require: 'ngModel',
    scope: { maxLength:'=', ngModel:'&' },
    link: function (scope, element, attrs) {

            console.log(scope.maxLength);

        scope.$watch(scope.ngModel, function (value) {

            if (value) {

                var newValue = value.length;
                console.log(value);
                element[0].innerText = newValue;
            }
        });

    }
}

});

}）;

I think you have to replace 'lenght' by 'length' :)

我认为你必须用'长度'来代替'lenght':)

#1