[JS] Slice Strings

Example codes of String.slice()

let str = "stringify";
console.log(str.slice(0, 5) ); // 'strin', from 0 to 5
console.log(str.slice(0, 1) ); // 's', from 0 to 1

str = "stringify";
console.log(str.slice(2) ); // ringify, from 2 to end

str = 'stringify';

// from last 4 to last 1
console.log(str.slice(-4, -1) ); // gif
str = 'stringify';

Please aware that String.substring() and String.slice result is not same

// same value will be returned
console.log(str.substring(2, 6) ); // "ring"
console.log(str.substring(6, 2) ); // "ring"

// slice result is not same as substring
console.log(str.slice(2, 6) ); // "ring"
console.log(str.slice(6, 2) ); // ""