<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">先看看js原生的</span>

function GetInfoFromTable(tableid) {

    var tableInfo = "";

    var tableObj = document.getElementById(tableid);

    for (var i = 0; i < tableObj.rows.length; i++) {    //遍历Table的所有Row

        for (var j = 0; j < tableObj.rows[i].cells.length; j++) {   //遍历Row中的每一列

            tableInfo += tableObj.rows[i].cells[j].innerText;   //获取Table中单元格的内容

            tableInfo += "   ";

        }

        tableInfo += "\n";

    }

    return tableInfo;

}

再看看jQuery的

$("table").find("tr").each(function(){

$(this).find("td").each(function(){

alert($(this).text());

});

});