extract string from string js code example

Example 1: javascript get first 10 characters of string

var str = "Hello world That is reallly neat!";
var res = str.substring(0, 5);//get first 5 chars

Example 2: reverse string js

const solution = (str) => str.split("").reverse().join("");

Example 3: substring javascript

var str = "Hello world!";
var res = str.substring(1, 4); //ell

Example 4: reverse string js

str.split('').reduce((reversed, character) =>{
    return character + reversed;
  }, '');
//apple = leppa

Example 5: javascript substring

// zero-based index, 'end' is excluded from result
myString.substring( start, end )