in javascript how can you change a string of numbers to numbers code example

Example 1: string to int javascript

var text = '3.14someRandomStuff';
var pointNum = parseFloat(text);
// returns 3.14

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