recreate common array methods that take higher order functions

JS_ARRAY_METHODS.md

Array.prototype.*

recreate common array methods that take higher order functions

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Example

• Array.prototype.myForEach = ...
• Object.defineProperty(Array.prototype, 'myForEach', { value: ...

1. forEach

Syntax

arr.forEach(callback(element [, index [, array]])[, thisArg]);

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2. filter

Syntax

var newArray = arr.filter(callback(element[, index[, array]])[, thisArg])

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3. map

Syntax

var newArray = arr.map(callback(element[, index[, array]])[, thisArg])

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4. find

Syntax

var resultElement = arr.find(callback(element[, index[, array]])[, thisArg])

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5. some

Syntax

var resultBoolean = arr.some(callback(element[, index[, array]])[, thisArg])

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6. every

Syntax

var resultBoolean = arr.every(callback(element[, index[, array]])[, thisArg])

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7. reduce

Syntax

var resultSingleValue = arr.reduce(callback(accumulator, currentValue[, index[, array]]), [, initialValue])

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8. sort

Syntax

var resultSorted = arr.sort([compareFunction])

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