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Ilya Kantor 2019-06-20 16:16:45 +03:00
parent eeee9fedf7
commit 7697f95e24
4 changed files with 41 additions and 38 deletions
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1-js/04-object-basics/04-object-methods/4-object-property-this/solution.md
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@ -14,11 +14,11 @@ let user = makeUser();
alert( user.ref.name ); // Error: Cannot read property 'name' of undefined
```
That's because rules that set `this` do not look at object literals.
That's because rules that set `this` do not look at object definition. Only the moment of call matters.
Here the value of `this` inside `makeUser()` is `undefined`, because it is called as a function, not as a method.
Here the value of `this` inside `makeUser()` is `undefined`, because it is called as a function, not as a method with "dot" syntax.
And the object literal itself has no effect on `this`. The value of `this` is one for the whole function, code blocks and object literals do not affect it.
The value of `this` is one for the whole function, code blocks and object literals do not affect it.
So `ref: this` actually takes current `this` of the function.
@ -42,5 +42,3 @@ alert( user.ref().name ); // John
```
Now it works, because `user.ref()` is a method. And the value of `this` is set to the object before dot `.`.