<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript Form Number Validation </title> <body> <h2>JavaScript Can Validate Input</h2> <p>Please input a number between 1 and 10:</p> <input id="number"> <button type="button" onclick="myFunction()">Submit</button> <p id="demo"></p> <script> function myFunction() { var x, text; // Get the value of the input field with id="numb" x = document.getElementById("number").value; // If x is Not a Number or less than one or greater than 10 if (isNaN(x) || x < 1 || x > 10) { text = "Input not valid"; } else { text = "Input OK"; } document.getElementById("demo").innerHTML = text; } </script> </body> </html>
