This site is mobile accessible. Press the "Tap Here" button to use a smaller font-size. Tap Here!

Smartphone icons created by Freepik - Flaticon

JavaScript Global Functions

parseInt()

The global JavaScript function parseInt() converts strings to numbers:

document.getElementById("demo").innerHTML = 
  parseInt("-10") + "<br>" +
  parseInt("-10.33") + "<br>" +
  parseInt("10") + "<br>" +
  parseInt("10.33") + "<br>" +
  parseInt("10 6") + "<br>" +  
  parseInt("10 years") + "<br>" +  
  parseInt("years 10");

If the number cannot be converted, NaN (Not a Number) is returned.