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update post: What is this inside foo.bar()?

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2020-04-03 09:42:05 +05:30
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@@ -46,7 +46,7 @@ Effectively -
One example of this is rewriting `foo.bar()` using a intermediate variable - ` fn = foo.​bar; fn()`. One example of this is rewriting `foo.bar()` using a intermediate variable - ` fn = foo.​bar; fn()`.
Now. if `bar` was referencing other values from foo using `this`, those values will become undefined or resolve to a wrong variable. Now, if `bar` was referencing other values from foo using `this`, those values will become undefined or resolve to a wrong variable.
🧠 This is exactly the reason why passing methods as callback changes the value of `this` (passed within it). Instead of calling a method directly, callback is passed as a function and called later by some other code. 🧠 This is exactly the reason why passing methods as callback changes the value of `this` (passed within it). Instead of calling a method directly, callback is passed as a function and called later by some other code.