submit() {
      var params= new URLSearchParams();           //！！！
      params.append("text",this.textarea);
      this.$axios
        .post("http://tjks.tjslkj.net/text.php", params)
        .then(this.hand)
        .catch((err) => {
          console.log(`${err}`);
        });
    },

php

<?php
 
//處理登入操作
$text=$_POST['text'];
// $username=123456;
// $password=$_POST['password'];
//連線
echo"<script>
        alert($text.text);
    </script>";
$link=mysqli_connect('localhost','root','ogMLZ1RU7T48qu2o');
//設定編碼方式
mysqli_query($link,'SET NAMES UTF8');
//開啟指定的資料庫
mysqli_select_db($link,'feedback');
 
//執行SQL語句
// $sql1="INSERT user(username,phone)
// VALUES('$username','$password')";
$sql = "INSERT INTO `feed` (`id`, `feedpack`) VALUES (NULL, '{$text}')";
// $sql="SELECT * FROM user1 WHERE username='{$username}' AND password='{$password}'";
//echo $sql;
$result = mysqli_query($link,$sql);
//var_dump($result);
 

//得到結果集中的記錄條數mysqli_num_rows($result)
//echo mysqli_num_rows($result);


if($result){
// if($link){
    // location.href='http://www.baidu.com';;
    echo "<script>
        alert('提交成功'+json_encode($text));
    </script>";
}else{
    // location.href='text.php';
    echo "<script>
        alert('提交失敗');
        
    </script>";
}

uniapp 還沒拿下，怎麼好意思休息