var num = prompt("Enter Number", "0") //prompt user to enter the number
 
var num = parseInt(num); //parse the num to number
var i = 0;
 
document.write('<table border="1" cellspacing="0">');
for(i=1;i<10;i++) {
    document.write("<tr><td>" + num + " x " + i + " = " + num*i + "</td></tr>");
}
 
document.write("</table>");