Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <body> <script> function myFunction() { var y=document.getElementById("mess"); y.innerHTML=""; try { var x=document.getElementById("demo").value; if(x=="") throw "empty"; if(isNaN(x)) throw "not a number"; if(x>10) throw "too high"; if(x<5) throw "too low"; } catch(err) { y.innerHTML="Error: " + err + "."; } } </script> <h1>My First JavaScript</h1> <p>Please input a number between 5 and 10:</p> <input id="demo" type="text"> <button type="button" onclick="myFunction()">Test Input</button> <p id="mess"></p> </body> </html>
Result:
W3Schools.com - Try it yourself