slice method in js
// array.slice(start, end)
const FRUITS = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
var citrus = FRUITS.slice(1, 3);
// citrus => [ 'Orange', 'Lemon' ]
// Negative values slice in the opposite direction
var fromTheEnd = FRUITS.slice(-3, -1);
// fromTheEnd => [ 'Lemon', 'Apple' ]slice()
slice(beginIndex)
slice(beginIndex, endIndex)
// beginIndex: The index at which to begin extraction
// endIndex: This index will not be included.
// Return: A new string containing the extracted section.
let str1 = 'The morning is upon us.'
// the length of str1 is 23.
let str2 = str1.slice(1, 8) // OUTPUT: he morn
let str3 = str1.slice(4, -2)// OUTPUT: morning is upon u
let str4 = str1.slice(12) // OUTPUT: is upon us.
let str5 = str1.slice(30) // OUTPUT: ""
// NEGATIVES
beginIndex is negative:
// it is treated as (str.length + beginIndex)
endIndex is negative:
// it is treated as (str.length + endIndex)js slice
const arr=[1,2,3,4,5];
const slicedArr = arr.slice(1,4); // slicedArr = [2,3,4]js slice
//The slice() method extracts a section of a string and returns
//it as a new string, without modifying the original string.
// same in array but you select elements not characters
const str = 'The quick brown fox jumps over the lazy dog.';
console.log(str.slice(31));
// expected output: "the lazy dog."
console.log(str.slice(4, 19));
// expected output: "quick brown fox"
console.log(str.slice(-4));
// expected output: "dog."
console.log(str.slice(-9, -5));
// expected output: "lazy"Slice Example
/*Use string concatenation and two slice() methods to print
'JS' from 'JavaScript'.*/
let language = 'JavaScript';
console.log(language.slice(0,1)+language.slice(4,5));
//JSCopyright © 2021 Codeinu
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