---
tags: Array, Javascript
disqus: hackmd
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# [JS]Array 陣列大補帖

[JavaScript之一定要了解的 Array 與方法 系列](https://ithelp.ithome.com.tw/users/20104175/ironman/2584)

[JavaScript Array 陣列操作方法大全 ( 含 ES6 )](https://www.oxxostudio.tw/articles/201908/js-array.html#array_reduce)

[9種必須知道的陣列方法](https://medium.com/javascript-in-plain-english/9-must-know-javascript-array-methods-6205d3113283)

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[Array.from](https://hackmd.io/YdKJxuOuT728_JI2qST-Eg?view)

[Array.prototype.find()](https://hackmd.io/Nieu8TFxR6iPdCxeLZyf8w?view)

[Array.prototype.map()](https://hackmd.io/sf5ZTghKSzmMp0jXtyenDg?view)

[Array.prototype.forEach()](https://hackmd.io/bFn9eWtNRT6A2kGnWmdlOA?view)

[Array.prototype.includes()](https://hackmd.io/ftlMW6QBRCG_QpyUar57Pw?view)

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### push
從屁股塞一個進去

### pop
從屁股拿一個出去

### shift
從頭拿一個出去

### unshift
從頭塞一個進去

### splice
從指定index拿出指定數量

const test = ['a', 'b', 'c', 'd']

test.splice(2, 1) //test = ['a', 'b', 'd']

test.splice(0, 2) //test = ['c', 'd']

test.splice(1) //test = ['a', 'b']

test.splice(2, 1, 'F') //test = ['a', 'b', 'F', 'd']

var AA = test.splice(0, 2)

AA //AA = ['a', 'b']
test //test = ['c', 'd']

### slice

### sort
依照陣列元素做排序

### reverse
依照陣列元素做反向排序

### filter

### map