关于js基础设计，九九乘法表与表格问题

九九乘法表
在显示的时候用表格形式 就是等式在表格里
要求用for或while循环做
求大神带飞

<script>
    var i,j;
    var strHtml="<table>";
    for(i=1;i<10;i++){
        strHtml += "<tr>";
        for(j=1;j<=i;j++){
            strHtml+= "<td>" +j + "*" + i + "=" + (i * j) +"</td>";
        }
        strHtml+= "</tr>";
    }
    strHtml+= "</table>";
    document.write(strHtml);
</script>

最终效果如图：

var i,j;
var strHtml="

"
for(i=0;i strHtml += ""
for（j=0;j strHtml +="";
}
strHtml += "";
}
strHtml += "

" + i + "*" + j + "=" + i * j +"

"

 var i,j;
var strHtml="<table>"
for(i=0;i<9;i++){
    strHtml += "<tr>"
    for（j=0;j<9;j++){
        strHtml += "<td>" + i + "*" + j + "=" + i * j +"</td>";
    }
    strHtml += "</tr>";
}
strHtml += "</table>"

 <script>
var i,j;
var strHtml="<table>";
for(i=1;i<=9;i++){
    strHtml += "<tr>";
    for(j=1;j<=9;j++){
        strHtml+= "<td>" + i + "*" + j + "=" + (i * j) +"</td>";
    }
    strHtml+= "</tr>";
}
strHtml+= "</table>"
document.write(strHtml);
</script>

var txt = ""; txt += "<table>"; for (var i = 1; i <= 9; i++) { txt += "<tr>"; for (var j = 1; j <= i; j++) { txt += "<td>"; txt += i + "*" + j + "=" + i * j; txt += "</td>"; } txt += "</tr>"; } txt += "</table>"; document.write(txt);