dongxun6690 2017-01-31 18:08
浏览 23
已采纳

如何从php获取值以使用ajax请求输入[重复]

This question already has an answer here:

Hi My question is how can I get the value from php script using an ajax with a onclick event.

I have a text field and a button

<button type="button" class="btn btn-primary" onclick="getid(this)">Generate ID</button>
<input type="text" name="pin" class="form-control" readonly>

And here is my php script named getrowcount.php

include_once  'conx.php';

$query ="SELECT * FROM patientprofile";
$result = $DBcon->query($query);
$count = $result->num_rows;

if ($result) {
   if($count >= 0){
       $count_res = $count += 1;
       $idnum = $count_res;
       $test = str_pad($idnum, 5, "0", STR_PAD_LEFT);
    }
}

And now my problem is how can I get the value from $test and put it in the input text field using ajax.

</div>
  • 写回答

4条回答 默认 最新

  • dongxue9997 2017-01-31 18:16
    关注

    You can use AJAX to display the output from the query in the input field.

    Step 1: Add this line of code to the bottom of getrowcount.php:

    echo $test;
    

    Step 2: Amend your HTML so that it looks like this:

    <form id="get">
       <input type="text" id="pin" name="pin" class="form-control" readonly>
       <input type="submit" class="btn btn-primary" value="Generate ID">
    </form>
    

    Step 3: Add this script to the bottom of the page.

    <script>
    $(document).ready(function(){
        $("form#get").submit(function(event) {
            event.preventDefault();
            var input = $("#pin");
    
            $.ajax({
                type: "POST",
                url: "getrowcount.php",
                success: function(data) { input.val(data); }
            });
        });
    });
    </script>
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(3条)

报告相同问题?

悬赏问题

  • ¥30 频率分析法分析绘制奈奎斯特图、波特图
  • ¥15 弹出来一万个系统找不到指定的文件框框,怎么解决
  • ¥15 ADS生成的微带线为什么是蓝色空心的
  • ¥15 求一下解题思路,完全不懂
  • ¥15 tensorflow
  • ¥15 densenet网络结构中,特征以cat方式复用后是怎么进行误差回传的
  • ¥15 STM32G471芯片spi设置了8位,总是发送16位
  • ¥15 R语言并行计算beta-NTI中tree文件的类型
  • ¥15 如何解读marsbar导出的ROI数据?
  • ¥20 求友友协助弄一下基于STC89C52单片机的声光控制灯原理图