JavaScript: Convert String to Integer (int)

To convert strings (text) to integer (number) in JavaScript use the parseInt function. For example: document.write(parseInt(“23 years”)); Will return the number 23, the function ignores the string “years” and return the integer 23 only. Another common example is:   If you enter 4 and 5, the script will return “45”  instead of 9.  To fix use the parseInt […]