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Fixed incorrect it's/its

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andrej-repisky 2018-01-22 12:16:56 +01:00 • committed by GitHub
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1-js/04-object-basics/01-object/article.md
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@ -9,7 +9,7 @@ In contrast, objects are used to store keyed collections of various data and mor
An object can be created with figure brackets `{…}` with an optional list of *properties*. A property is a "key: value" pair, where `key` is a string (also called a "property name"), and `value` can be anything. An object can be created with figure brackets `{…}` with an optional list of *properties*. A property is a "key: value" pair, where `key` is a string (also called a "property name"), and `value` can be anything.
We can imagine an object as a cabinet with signed files. Every piece of data is stored in it's file by the key. It's easy to find a file by it's name or add/remove a file. We can imagine an object as a cabinet with signed files. Every piece of data is stored in its file by the key. It's easy to find a file by its name or add/remove a file.
![](object.png) ![](object.png)
@ -472,7 +472,7 @@ As a result we have two independent variables, each one is storing the string `"
Objects are not like that. Objects are not like that.
**A variable stores not the object itself, but it's "address in memory", in other words "a reference" to it.** **A variable stores not the object itself, but its "address in memory", in other words "a reference" to it.**
Here's the picture for the object: Here's the picture for the object:
@ -703,7 +703,7 @@ user.sizes.width++; // change a property from one place
alert(clone.sizes.width); // 51, see the result from the other one alert(clone.sizes.width); // 51, see the result from the other one
``` ```
To fix that, we should use the cloning loop that examines each value of `user[key]` and, if it's an object, then replicate it's structure as well. That is called a "deep cloning". To fix that, we should use the cloning loop that examines each value of `user[key]` and, if it's an object, then replicate its structure as well. That is called a "deep cloning".
There's a standard algorithm for deep cloning that handles the case above and more complex cases, called the [Structured cloning algorithm](https://w3c.github.io/html/infrastructure.html#internal-structured-cloning-algorithm). In order not to reinvent the wheel, we can use a working implementation of it from the JavaScript library [lodash](https://lodash.com), the method is called [_.cloneDeep(obj)](https://lodash.com/docs#cloneDeep). There's a standard algorithm for deep cloning that handles the case above and more complex cases, called the [Structured cloning algorithm](https://w3c.github.io/html/infrastructure.html#internal-structured-cloning-algorithm). In order not to reinvent the wheel, we can use a working implementation of it from the JavaScript library [lodash](https://lodash.com), the method is called [_.cloneDeep(obj)](https://lodash.com/docs#cloneDeep).