Web App

var row;
var c;
rows = window.prompt("please enter the number of row");
var col;
col = window.prompt("please enter the number of cols");
c = window.prompt("please enter the color :");

switch(c){
case "yellow":
c = "yellow";
break;
case "green":
c = "green";
break;
case "blue":
c ="blue";
break;
default :
c = "white";
window.alert("Erorr");
}
document.write("<table border='1' bgcolor="+c+">");

for(var row = 1;row<=rows;row++){
    document.write("<tr>");
    for(var cols = 1;cols<=col;cols++){
    document.write("<td>");

document.write(row*cols);

        document.write("</td>");
    }
    document.write("</tr>");
}

document.write("<table>");