!DOCTYPE html>
html lang="en">
head>
  meta charset="UTF-8">
  title>即点即改/title>
  script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js">/script>
/head>
body>
?php
$con = array(
  array("id"=>1,"姓名"=>"张三","性别"=>"女"),
  array("id"=>2,"姓名"=>"李四","性别"=>"男"),
  array("id"=>3,"姓名"=>"王五","性别"=>"男"));
 // print_r($con);die;
?>
  table align="center" border="1">
  ?php foreach ($con as $key => $v): ?>
    tr pid="?= $v['id'];?>">
      td>span class="up" style="cursor:pointer;">?= $v['姓名'];?>/span>/td>
      td>?= $v['性别'];?>/td>
    /tr>
  ?php endforeach; ?>
  /table>
/body>
/html>
script>
  //即点即改
  $(document).on("click",".up",function(){
    var content = $(this).text(); //获取到当前点击对象的值
    var pid = $(this).parents("tr").attr('pid');  //通过attr 获取到设置的属性（pid）
    //当点击修改文字时 变成文本框并且获取到原值（content）
    $(this).parent().html("input type='text' class='fo' value='" + content + "'/>");
    $(".fo").focus(); //光标
    $(".fo").blur(function(){
      //获取到修改后的值
      var val = $(".fo").val();
      //
      /*
      将所有修改信息传到后端
       */
      $(this).parent().html("span class='up' style='cursor:pointer;'>"+val+"/span>");
    })
  })
/script>