为什么表格显示不了？

[已解决问题] 解决于 2017-03-15 15:00

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <script type="text/javascript" src="js/js学习1.js"></script>
    </head>

    <body>
        <input type="button" value="九九乘法表格" onclick="MyClick()">
    </body>

</html>

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