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Merge pull request #2783 from akxavier/master

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Added link for Object.keys(user)
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Ilya Kantor 2021-12-12 22:30:43 +03:00 • committed by GitHub
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1-js/04-object-basics/08-symbol/article.md
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@ -161,7 +161,7 @@ for (let key in user) alert(key); // name, age (no symbols)
alert( "Direct: " + user[id] ); alert( "Direct: " + user[id] );
``` ```
`Object.keys(user)` also ignores them. That's a part of the general "hiding symbolic properties" principle. If another script or a library loops over our object, it won't unexpectedly access a symbolic property. [Object.keys(user)](mdn:js/Object/keys) also ignores them. That's a part of the general "hiding symbolic properties" principle. If another script or a library loops over our object, it won't unexpectedly access a symbolic property.
In contrast, [Object.assign](mdn:js/Object/assign) copies both string and symbol properties: In contrast, [Object.assign](mdn:js/Object/assign) copies both string and symbol properties: