javascript 如何读取分配给 AngularJS 指令的值

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时间:2020-10-26 17:57:46  来源:igfitidea点击:

How do you read the value assigned to an AngularJS directive

javascriptangularjs

提问by Dustin

I have an angular directive that is a custom attribute that possibly can contain a value like so:

我有一个 angular 指令,它是一个自定义属性,可能包含如下值:

<div my-directive="myVal"></div>

How do I read myVal (as a string) from inside my directive's link function?

如何从指令的链接函数中读取 myVal(作为字符串)?

回答by Ben Lesh

The passed value is on the attributes object passed as the third argument to the link function. It's under a property matching the name of the directive.

传递的值位于作为第三个参数传递给链接函数的属性对象上。它位于与指令名称匹配的属性下。

app.directive('myDirective', function() {
   return {
       restrict: 'A',
       link: function(scope, elem, attr) {
            //read the passed value
            alert(attr.myDirective);
       }
   }
});