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34 lines
708 B
Markdown
34 lines
708 B
Markdown
---
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id: 78ef5b06-a541-4e33-9c51-af92cd91719c
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title: Rest Operator (…) in Object Destructuring
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---
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# Introduction
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Introduced in [ES2018](20201030095105-es2018) to help with
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[destructuring](20200922160850-destructuring).
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# Syntax
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## Basic
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``` javascript
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const obj = { foo: 1, bar: 2, baz: 3 };
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const { foo, ...rest } = obj;
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console.log(foo); // 1
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console.log(rest); // { bar: 2, baz: 3 }
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```
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## Named parameters
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The rest operator can also be used with [named
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parameters](20200922162127-named_parameters):
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``` javascript
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function func({ param1, param2, ...rest }) {
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// rest operator
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console.log("All parameters: ", { param1, param2, ...rest }); // spread operator
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return param1 + param2;
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}
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```
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