Converting string to number using JavaScript.

strToNumber.js

/**
 * Ways to convert a numeric string to a number.
 *
 * @author Sajeeb Ahamed
 */

const str = '343';

// Using parseInt method.
number = parseInt(str);

// Using 0 bit right shifting.
// Careful this only works with 32 bits numbers.
number = str >> 0;

// Using Number constructor
// Note: For real number string it returns original real number
number = Number(str);

// Using unary plus (+) operator
// Note: For real number string this also returns original real number
number = +str;

// Multiplying or dividing by 1
number = str * 1; // or
number = str / 1;