javascript - AngularJS:将服务属性绑定(bind)到 Controller

Question

我刚刚开始使用 ngJS。

我找到了将服务对象绑定(bind)到 Controller 的方法。

我想知道，这是实现此目的的良好做法还是有推荐的方法？

我还想知道为什么这只能在对象上实现，而不能在属性上实现？

这是我的 fiddle 。欢迎深入解释。

谢谢。

Answer 1

阅读此内容 SO thread .

A variable can hold one of two types of values: primitive values
and reference values.

• Primitive values are data that are stored on the stack.
• Primitive value is stored directly in the location that the variable accesses.
• Reference values are objects that are stored in the heap.
• Reference value stored in the variable location is a pointer to a location in memory where the object is stored.
• Primitive types inlcude Undefined, Null, Boolean, Number, or String.

The basics

Objects are aggregations of properties. A property can reference an object or a primitive. Primitives are values, they have no properties.

JavaScript has 5 primitive datatypes: string, number, boolean, null, undefined. With the exception of null and undefined, all primitives values have object equivalents which wrap around the primitive values, e.g. a String object wraps around a string primitive. All primitives are immutable.