九九乘法表

    ////九九乘法表for循环
    //var oDiv = document.getElementById('nine');
    //for (var nFirstNum = 1; nFirstNum < 10; nFirstNum++) {
    //    for (var nSecNum = 1; nSecNum <=nFirstNum; nSecNum++) {
    //        oDiv.innerHTML += nFirstNum + '*' + nSecNum + '=' + nFirstNum * nSecNum + '&nbsp;&nbsp;&nbsp;'
    //  }
    //    oDiv.innerHTML += '<br/>';
    //    oDiv.style.border='1px solid #f00'
    //}

    ////while是先判断循环条件,再循环
    //var oDiv = document.getElementById('nine');
    //var nFirstNum = 1;
    //while (nFirstNum < 10) {
    //    var nSecNum = 1;
    //    while (nSecNum <= nFirstNum) {
    //        oDiv.innerHTML += nFirstNum + '*' + nSecNum + '=' + nFirstNum * nSecNum + '&nbsp;&nbsp;&nbsp;'
    //        nSecNum++;
    //    }
    //    oDiv.innerHTML += '<br/>'
    //    nFirstNum++;
    //    oDiv.style.border = '1px solid #ccc'
    //}

    ////而do-while则是先执行后判断.
    //var oDiv = document.getElementById('nine');
    //var nFirstNum = 1;
    //do {
    //    var nSecNum = 1;
    //    do {
    //        oDiv.innerHTML += nFirstNum + '*' + nSecNum + '=' + nFirstNum * nSecNum + '&nbsp;&nbsp;&nbsp;'
    //        nSecNum++;
    //        } while (nSecNum <= nFirstNum)
    //    oDiv.innerHTML +='<br/>'
    //    nFirstNum++;
    //    oDiv.style.border='1px solid #ccc'
    //} while (nFirstNum < 10)