Javascript jQuery TypeError:$（“img”）.draggable（）；这不是一个函数_Javascript_Jquery_Html

Javascript jQuery TypeError:$（“img”）.draggable（）；这不是一个函数

javascript jquery html

Javascript jQuery TypeError:$（“img”）.draggable（）；这不是一个函数,javascript,jquery,html,Javascript,Jquery,Html,您好，在过去的3个小时里，我一直对此代码有问题，希望有人能在这里帮助我。 jQuery $(document).ready(function() { $("img").draggable();}); HTML标题 <head> <title>Chess</title> <meta http-equiv="Content-type" content="text/html;charset=UTF-8"> <link r

您好，在过去的3个小时里，我一直对此代码有问题，希望有人能在这里帮助我。

jQuery

$(document).ready(function() { 
$("img").draggable();});

HTML标题

<head>
    <title>Chess</title>
    <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
    <link rel="stylesheet" type="text/css" href="reset.css" />
    <link rel="stylesheet" type="text/css" href="default.css"/>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>
    <script type="text/javascript" src="default.js"></script>
</head>

TypeError: $("img").draggable is not a function [Break On This Error] $("img").draggable();

我的代码在本地主机或服务器上运行得非常好，但当我在本地主机或服务器上尝试它时，会不断收到此错误消息。我做错了什么？

完整的HTML

    <!DOCTYPE html>
 <html>
    <head>
        <title>Chess</title>
        <meta http-equiv="Content-type" content="text/html;charset=UTF-8">
        <link rel="stylesheet" type="text/css" href="reset.css" />
        <link rel="stylesheet" type="text/css" href="default.css"/>
        <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>
        <script type="text/javascript" src="default.js"></script>
    </head>
    <body>
     <div id="board">
        <ul id="first_row">
            <li class="white_space"><img src="pieces/Rook_Black.png" /></li>
            <li class="black_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="black_space"><img src="pieces/Rook_White.png" /></li>
        </ul>
        <ul id="second_row">
            <li class="black_space"><img src="pieces/Knight_Black.png" /></li>
            <li class="white_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="white_space"><img src="pieces/Knight_White.png" /></li>
        </ul>
        <ul id="third_row">
            <li class="white_space"><img src="pieces/Bishop_Black.png" /></li>
            <li class="black_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="black_space"><img src="pieces/Bishop_White.png" /></li>
        </ul>
        <ul id="forth_row">
            <li class="black_space"><img src="pieces/Queen_Black.png" /></li>
            <li class="white_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="white_space"><img src="pieces/King_White.png" /></li>
        </ul>
        <ul id="fifth_row">
            <li class="white_space"><img src="pieces/King_Black.png" /></li>
            <li class="black_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="black_space"><img src="pieces/Queen_White.png" /></li>
        </ul>
        <ul id="sixth_row">
            <li class="black_space"><img src="pieces/Bishop_Black.png" /></li>
            <li class="white_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="white_space"><img src="pieces/Bishop_White.png" /></li>
        </ul>
        <ul id="seventh_row">
            <li class="white_space"><img src="pieces/Knight_Black.png" /></li>
            <li class="black_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="black_space"><img src="pieces/Knight_White.png" /></li>
        </ul>
        <ul id="eight_row">
            <li class="black_space"><img src="pieces/Rook_Black.png" /></li>
            <li class="white_space"><img src="pieces/Pawn_Black.png" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="#" /></li>
            <li class="white_space"><img src="#" /></li>
            <li class="black_space"><img src="pieces/Pawn_White.png" /></li>
            <li class="white_space"><img src="pieces/Rook_White.png" /></li>
        </ul>
     </div>
    </body>
</html>


国际象棋

您没有加载jquery，只加载jquery ui。jquery本身不是由jquery ui加载的，因此需要两个不同的

script

标记

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.9.1/jquery-ui.min.js"></script>

它在codecademy上工作的原因大概是jQuery已经加载，以便向您显示codecademy页面。现在FireBug向我发送了以下错误：“NetworkError:404 Not Found-”，因为1.8.2是jQuery版本号，而不是jQueryUI版本号。它们不同步。另外，jquery-ui.min.js位于单独的

jqueryui

文件夹中。请仔细检查您收到的URL。实际上，最好复制并粘贴它们。（或者，您可以查找每个版本的最新版本号。建议您也这样做。）它可以工作！！非常感谢你们，我终于可以开始关注更重要的事情了。