string to char array in javascript

const string = 'hi there';

const usingSplit = string.split('');              
const usingSpread = [...string];
const usingArrayFrom = Array.from(string);
const usingObjectAssign = Object.assign([], string);

// Result
// [ 'h', 'i', ' ', 't', 'h', 'e', 'r', 'e' ]
var output = "Hello world!".split('');
console.log(output);