JS Array Prototype Slice - thelastmile/FreeCodeCamp GitHub Wiki
The
slice()method returns a shallow copy of a portion of an array into a new array object.
arr.slice([begin[, end]])| Necessity | Parameter | Description |
|---|---|---|
| Required | arr | An Array object. |
| Required | begin | The beginning of the specified portion of array. |
| Optional | end | The end of the specified portion of array. |
Return: The slice method returns an Array object containing the specified portion of arrayObj.
var origArray = [3, 5, 7, 9];
var newArray = origArray. slice(0, -1);
document.write(origArray);
document.write("<br/>");
newArray = origArray. slice(-2);
document.write(newArray);
// Output:
// 3,5,7,9
// 7,9// Our good friend the citrus from fruits example
var fruits = ['Banana', 'Orange', 'Lemon', 'Apple', 'Mango'];
var citrus = fruits.slice(1, 3);
// citrus contains ['Orange','Lemon']