$(".app-button").click(function(e) {
n = parseFloat($(".app-input").val());
worksheet.execute_code({
code: "salvus.data['n'] * random()",
data: {n:n},
preparse: false,
cb : function(mesg) {
console.log(mesg);
if (mesg.stdout) {
$(".app-output").append(mesg.stdout);
}
}
})
})