我有一個(gè)JS函數(shù)，該函數(shù)在單擊時(shí)調(diào)用，該函數(shù)傳遞一個(gè)字符串，并且第一個(gè)按鈕有效，但是所有后續(xù)按鈕都給我錯(cuò)誤action is not a function (In 'action("upvote")', 'action' is "")其中 action 是函數(shù)的名稱，upvote 是傳遞的變量。使用檢查元素向我顯示兩個(gè)按鈕是相同的，這是它們的外觀<button type="button" onclick="action('upvote')">Like</button>最奇怪的是按鈕在它調(diào)用函數(shù)之前，并且適用于所有按鈕，而不僅僅是第一個(gè)按鈕<button type="button" onclick="fun(84)">Reply</button>我檢查了，我沒有忘記關(guān)閉任何div或按鈕我唯一能想到的是，我通過(guò)遞歸php函數(shù)來(lái)回顯這些，我不認(rèn)為JS函數(shù)有范圍，但我不明白為什么第一個(gè)按鈕工作而不是后續(xù)如果需要更多代碼，請(qǐng)告訴我下面的代碼是我對(duì)父 divs 的打印函數(shù) echo "<div class='parent' style='margin-left:".$width."px'>".$x['comment']."    <div class='actions'>       <button  type='button' onclick='fun($ran)'>Reply</button>        <button type='button' onclick='action(\"upvote\")'>Like</button>         <button type='button'>Dislike</button>";    //Reply Like and Dislike are all actions every user gets, here I check which user it is to see if they can see the edit/delete    //Normally I would check for admin rather than id == 2, but there is only 1 admin and he id 2    if(($comment['userid'] == $_SESSION['id']) || $_SESSION['id'] == 2){         echo "<button type='button'>Edit</button>               <button type='button'>Delete</button></div>";//Close of actions div      }     else{        echo"</div>";//Close of actions div      }    $uname = mysqli_fetch_assoc($db->query("SELECT username FROM users WHERE id = ".$comment['userid']." "));    echo"    <div class='info'>    Score: ".$comment['score']." &nbsp; &nbsp; Posted By- ".$uname['username']."&nbsp; &nbsp At-".$x['created']." ";    if($x['edited'] != NULL){       echo"&nbsp; &nbsp; Edited Last-".$x['edited']." </div>";    }    else{       echo"</div>";    }?> </div> //Close of parent div這里仍然是我檢查注釋是否有任何回復(fù)注釋的函數(shù)的一部分，如果是這樣，我遞歸調(diào)用相同的函數(shù)，