js实现九九乘法表

<script type="text/javascript">
        var sum=0;
        var wite;
        for (var i = 1; i < 10; i++){
            var div=$(‘<div class="class‘+i+‘"></div>‘);
            $("body").append(div);
            for(var j = i; j > 0; j--){
                sum = j * i;
                wite = (j+"X"+i+"="+sum);

                div.prepend($(‘<span style="padding-right:10px">‘+wite+‘</span>‘));
            }
            
        } 
    </script>