Question

我正在进行注册页面，其中应根据其他2个输入文本框填充一个输入文本框。

tblEntries
Id; firstname; lastname; age; gender; categories 

tblCategories
Id; categories; age_from; age_to, gender
Data inserted:  1; Veteran_male; 20; 30; male

frmEntries.php is populated with tblEntries data onload already using localstorage.
(may look like this
Firstname=Peter
Lastname=Trump
Age=25
Gender=male
Categories= ?(from sql)



include("conn.php");
include("categories.php");

<input id="firstname" type="text" name="firstname" value="" />
    <input id="lastname" type="text" name="lastname" value="" />
    <input id="age" type="text" name="age" value="" />
    <input id="gender" type="text" name="gender" value="" />
 <input id="categories" type="text" name="categories" value="<?php echo $output; ?>" />

（tblCategories中的25落在20到30之间，两个表中都显示了性别）

categories.php

 <php?
        include ('conn.php');
$gender = $_POST["gender"];
  $age = $_POST["age"];
 $result = $con->query("SELECT categories FROM tblCategories WHERE '$age' BETWEEN age_from AND age_to AND gender='$gender'”); 
        $result = mysqli_query($con, $query);
        $output = '';
        while($row = mysqli_fetch_array($result))
        {
         $output = $row["categories"];
        }
        echo($output);-   //(to be populated inside the frmEntries and the 
        “categories” field onload)
        }
        ?>

我应该用按钮使用Ajax吗？

<script>
$('#updateBtn').click(function(e){
    //to disable the click from going to next page
    e.preventDefault();
    $.ajax(
         'categories.php', function(data){

               $('#categories').val(data);
         }
    );
});
</script>

请告知如何执行此操作。我是否应该在onload之后使用按钮来填充“类别”？我变量找不到错误

根据表单中的其他txtboxes值从sql填充文本框

0 个答案: