基本 Sproutcore：类方法、类变量帮助

发布于 2024-10-19 09:52:55 字数 355 浏览 2 评论 0原文

这就是我如何定义一个带有实例变量和实例方法的简单类。

ExampleClass = SC.Object.extend({
    foo:undefined,
    bar: function() {
        this.foo = "Hello world";
        console.log( this.foo );
    }
}

// test
var testInstance = ExampleClass.create();
testInstance.bar();    // outputs 'Hello world'

谁能帮助我提供类变量（或类似行为）和类方法的类似示例？

谢谢

原文

This is how i am defining a simple class with instance variables and instance methods.

ExampleClass = SC.Object.extend({
    foo:undefined,
    bar: function() {
        this.foo = "Hello world";
        console.log( this.foo );
    }
}

// test
var testInstance = ExampleClass.create();
testInstance.bar();    // outputs 'Hello world'

Could anyone help me out with a similar example of class variable (or similar behavoir), and class method?

Thanks

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隱形的亼 2024-10-26 09:52:55

类方法/属性的做法如下：

ExampleClass = SC.Object.extend({
  foo:undefined,
  bar: function() {
    this.foo = "Hello world";
    console.log( this.foo );
  }
}

ExampleClass.mixin({
  classFoo: "foo",
  classBar: function() {
    return "Bar";
  }
})

然后您可以像这样访问它：

ExampleClass.classFoo

但不要忘记，在访问实例上的属性（或计算属性）时，您需要使用 .get()如：

var example = ExampleClass.create();
// Good
example.get('foo');
example.set('foo', 'baz');

// BAD!! Don't do this, or Bindings/ Observes won't work.
example.foo; 
example.foo = 'baz';

A class Method/Property would be done like:

ExampleClass = SC.Object.extend({
  foo:undefined,
  bar: function() {
    this.foo = "Hello world";
    console.log( this.foo );
  }
}

ExampleClass.mixin({
  classFoo: "foo",
  classBar: function() {
    return "Bar";
  }
})

Then you can access it like:

ExampleClass.classFoo

But don't forget that when accessing a property (or computed property) on an instance, that you need to use .get() like:

var example = ExampleClass.create();
// Good
example.get('foo');
example.set('foo', 'baz');

// BAD!! Don't do this, or Bindings/ Observes won't work.
example.foo; 
example.foo = 'baz';

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