52 lines
1.0 KiB
Markdown
52 lines
1.0 KiB
Markdown
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# Purpose
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Calling function constructors with an array of arguments is difficult. Until [spread](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator) params are fully supported in all browsers, newify does the job.
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For a given function constructor
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```js
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function Student(firstName, lastName, birthYear){
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this.firstName = firstName
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this.lastName = lastName
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this.birthYear = birthYear
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}
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```
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We want to easily call the function constructor like
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```js
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var arr = ['john','scot', 1980]
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var s = new Student(arr) //but this will obviously not work as expected.
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//we need ES6 spread
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var s = new Student(...arr)
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```
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But since we can't use spread in ES5 ...
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NEWIFY to the rescue!
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```js
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var arr = ['john','scot', 1980]
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var s = require('newify')(Student, arr)
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```
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# Installation
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```
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npm install newify
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```
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# Usage
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As in the above example, just give `newify` a function and an array of args
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```js
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var arr = ['john','scot', 1980]
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var s = require('newify')(Student, arr)
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```
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# Run tests
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```
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make test
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```
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