[demo] string to array

string-to-array.js

const foo = "foo";

// use Array.from
console.log("Array.from", Array.from(foo)); // [ 'f', 'o', 'o' ]

// use ES6 Array spread and Array.of function
console.log(Array.of(...foo)); // [ 'f', 'o', 'o' ]

// use ES6 Array spread and array literal
console.log([...foo]); // [ 'f', 'o', 'o' ]