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28 lines
688 B
Markdown
28 lines
688 B
Markdown
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---
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id: 32b0031a-0830-4e8c-a39c-3bf6d8791f84
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title: JavaScript New Keyword
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---
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# Description
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When you put the keyword `new` in front of a function call, the function
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is treated as a constructor. An [object](20200826201605-objects) with
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the proper [prototype](20201113091424-javascript_prototypes) is
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automatically created, bound to `this` in the function and returned at
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the end of the function. This allows you to do OO type stuff.
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# Syntax
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``` javascript
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function Rabbit(type) {
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this.type = type
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}
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Rabbit.prototype.speak = function(line) {
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console.log(`The ${this.type} rabbit says '${line}'`)
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};
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let weirdRabbit = new Rabbit("weird")
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weirdRabbit.speak("I want carrots!")
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```
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