typos
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@ -87,7 +87,7 @@ The constructor can't be called again, because it is not saved anywhere, just cr
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## Dual-use constructors: new.target
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Inside a function, we can check how it is called with `new` or without it, using a special `new.target` property.
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Inside a function, we can check whether it was called with `new` or without it, using a special `new.target` property.
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It is empty for ordinary runs and equals the function if called with `new`:
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@ -116,7 +116,7 @@ let john = User("John"); // redirects call to new User
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alert(john.name); // John
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```
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This approach is sometimes used in libraries to make the syntax more flexible. Probably not a good thing to use everywhere though, because it makes a bit less obvious what's going on for a person who's familiar with internals of `User`.
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This approach is sometimes used in libraries to make the syntax more flexible. Probably not a good thing to use everywhere though, because it makes a bit less obvious what's going on for a person who's familiar with the internals of `User`.
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## Return from constructors
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@ -158,7 +158,7 @@ function SmallUser() {
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alert( new SmallUser().name ); // John
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```
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Most of time constructors return nothing. Here we mention the special behavior with returning objects mainly for the sake of completeness.
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Most of the time constructors return nothing. Here we mention the special behavior with returning objects mainly for the sake of completeness.
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````smart header="Omitting brackets"
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By the way, we can omit brackets after `new`, if it has no arguments:
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@ -208,7 +208,7 @@ john = {
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- Constructor functions or, shortly, constructors, are regular functions, but there's a common agreement to name them with capital letter first.
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- Constructor functions should only be called using `new`. Such call implies a creation of empty `this` at the start and returning the populated one at the end.
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We can use constructor functions to make multiple similar objects. But the topic is much deeper than described here. So we'll return it later and cover more in-depth.
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We can use constructor functions to make multiple similar objects. But the topic is much deeper than described here. So we'll return to it later and cover it more in-depth.
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JavaScript provides constructor functions for many built-in language objects: like `Date` for dates, `Set` for sets and others that we plan to study.
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