jquery for循环打印乘法表

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>for循环</title>
    <script src="js/jQuery.js"></script>
    <script>
        $(document).ready(function(){
            var arr=[];
            for (var i=1;i<10;i++){
                for (var num=1;num<10;num++){
                    var string = i+'*'+num+'='+i*num;
                    arr.push(string);
                    if(i==num){
                        $("body").append("<p>"+arr+"</p>");
                        arr=[];
                        break;
                    }
                }
            }
        });
    </script>
</head>
<body>

</body>
</html>