更新数据库后,php / javascript更改内联标签

时间:2015-08-19 14:42:32

标签: javascript php onclick label updating

这是我的第一篇文章..我的问题可能很简单,但我找不到正确的方法......!

我有一个php页面,其中包含来自数据库的查询选择以显示许多记录,对于每个记录我已经放置了一些需要更新的字段和一个“保存”按钮

所以对于每条记录,我在结果表中有一个包含如下形式的列:

$code = "<td><form method='POST' action='mypage.php' target='_blank' />";

$code .= " <input type='hidden' name='function' value='formtaglieok' />";
$code .= " <input type='hidden' name='email' value='".$email."' />";
$code .= " <input type='hidden' name='main' value='".$main."' />";
..... some other editing fields
$code .= "<input type='text' name='field1' value='' size='2' />"
..... some other editing fields
$code .= "<td><input type='submit' value='Save' /></td>"

在这个专栏之后我按下按钮并更新了记录后我想要更改标签,如:

$code .= "<td><div id='<this_record_id>' ></div></td>";

在mypage.php中我有php代码来更新记录:

function updaterecord($_POST){
  ...connection to db, prepare the query etc..
  $stid = OCIParse($conn, $query);        

  if (OCIExecute($stid)) {
      $res .= "Saved ";
  } else {
      $res .= "Error";      
  } 

  echo $res;     
}

显然,使用这种表单操作和目标“_blank”,我在新页面中看到结果“已保存”或“错误”,并且DB中记录的更新是可以的

我想不会在新页面中添加“已保存”,而是更新“保存”按钮旁边的div this_record_id

所以,我会尝试将onClick事件添加到提交按钮

<input type='submit' value='Save' onclick='jSaved(<this_record_id>)' />

并将此代码放在页面的头部

<script type='text/javascript'>
function jSaved(bcode){

    document.getElementById(bcode).innerHTML = 'Saved';
}
</script>

并正确更新标签,但也打开另一页。

我要做的是使用$ _POST数组在JS代码中执行我的更新函数,所以不要获得新页面,而只是标签中函数的结果..

有人可以帮帮我吗?

编辑:已解决

1)我的php主页面的形式如(IMPORTANT设置form_id):

$code = "<form name='frm_".$record['TD001_SEQ']."' id='frm_".$record['TD001_SEQ']."' action='' />";

$code .= " <input type='hidden' name='function'  id='function' value='formtaglieok' />";


$code .= " <input type='hidden' name='email'     id='email' value='".$email."' />";
$code .= " <input type='hidden' name='main'      id='main' value='".$main."' />";
$code .= " <input type='hidden' name='store'     id='store' value='".$store."' />";
$code .= " <input type='hidden' name='valuta'    id='valuta' value='".$valuta."' />";
....other fields
//the code for the button (not submit)
$code .= "<td><input type='button' value='Save' onclick='jSaved(".$record['TD001_SEQ']."); '/></td>";
//the label DIV with the same reference of the form/record updating
$code .= "<td><div id='res_".$record['TD001_SEQ']."' ></div></td>";

2)javascript代码     

  function jSaved(td001){

        //searching for exact form from the document page
        var form = false;
    var length = document.forms.length;
    for(var i = 0; i < length; i++) {
      if(document.forms[i].id == "frm_" + td001) {
        form = document.forms[i];
      }
    }

    //create a string containing all key/values from the form (parameters)      
        length = form.length;
        var sParams = "";

        for(var i = 0; i < length; i++) {
          //will be key1=val1&key2=val2 ....
          sParams = sParams + form.elements[i].id + "=" + form.elements[i].value + "&";

    }

    //execute the php update function with params in POST, td001 is needed to write le DIV label after update       

        var updResult = updateRecord("upd.php", sParams, td001);


  }

    //ajax code
  function updateRecord(strUrl, params, idDiv) {
    var xmlHttpReq = false;

    if (window.XMLHttpRequest) {
      xmlHttpReq = new XMLHttpRequest();
    }
      else if (window.ActiveXObject) {

      xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }


    xmlHttpReq.open('POST', strUrl, true);


    xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');


    xmlHttpReq.send(params);


    xmlHttpReq.onreadystatechange = function() {

        /*state evaluation
        * 0 - UNINITIALIZED
        * 1 - LOADING
        * 2 - LOADED
        * 3 - INTERACTIVE
        * 4 - COMPLETE*/

        //state complete
        if (xmlHttpReq.readyState == 4) {
                //updating the DIV label with upd.php result 
                document.getElementById('res_' + idDiv).innerHTML = xmlHttpReq.responseText;
        } 


    }

    return resUpd;
  }


</script>

3)upd.php页面

if (isset($_POST)) {      
  funFormTaglieOK($_POST);
} else {
  echo "Denied";
}

function funFormTaglieOK($params){
  global $dbdw_usr, $dbdw_pwd, $dbdw_SID;
    // Try to connect to Oracle
  if ($conn = OCILogon($dbdw_usr, $dbdw_pwd, $dbdw_SID)) {
   //execute record update
   if (recordupdate is ok){
    echo "Update"
   } else {
    echo "Error" 
   }

  }
}

1 个答案:

答案 0 :(得分:0)

好的,你应该使用ajax,不要使用target = _blank。

如果你想要一个新窗口,你仍然可以通过Javascript打开它。

在由ajax调用调用的PHP代码中,您应该以JSON格式返回正确的结果。你必须在JS中解析该字符串,并相应地进行DOM更新。