<tbody id="history_income_list">
<tr>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><a class="" onclick="history_income_del(this);" href="###">删除</a></td>
</tr>
<tr>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><a class="" href="###">删除</a></td>
</tr>
<tr>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><input type="text" class="input-s input-w input-hs"></td>
<td align="center"><a class="" href="###">删除</a></td>
</tr>
</tbody>

var trList = $("#history_income_list").children("tr")
  for (var i=0;i<trList.length;i++) {
    var tdArr = trList.eq(i).find("td");
    var history_income_type = tdArr.eq(0).find("input").val();//收入类别
    var history_income_money = tdArr.eq(1).find("input").val();//收入金额
    var history_income_remark = tdArr.eq(2).find("input").val();//  备注
    
    alert(history_income_type);
    alert(history_income_money);
    alert(history_income_remark);
  }

$("#history_income_list").find("tr").each(function(){
    var tdArr = $(this).children();
    var history_income_type = tdArr.eq(0).find("input").val();//收入类别
    var history_income_money = tdArr.eq(1).find("input").val();//收入金额
    var history_income_remark = tdArr.eq(2).find("input").val();//  备注
    
    alert(history_income_type);
    alert(history_income_money);
    alert(history_income_remark);
    
    
  });