how to convert full number in javascript code example

Example 1: javascript convert a number in string

const num = 123; //> type number 123
const str = num.toString(); //> type string "123"

Example 2: string to int javascript

// Convert strings
Number('123'); // returns 123
Number('12.3'); // returns 12.3
Number('3.14someRandomStuff'); // returns NaN
Number('42px'); // returns NaN