jQuery slideDown script not working in simple code example

StackOverflow https://stackoverflow.com/questions/19499030

質問 

<!DOCTYPE html>
<html>
    <head>
        <title>
        </title>
        <style>
        </style>
        <script type="text/javascript">
            $(document).ready(function {
          $('img').slideDown('slow');
      });
        </script>
    </head>
    <body>
        <img src="images\sjmak-music-logo.jpeg"/>
    </body>
</html>

The simple code example above is not working; I am attempting to simply make the image slide down from the top of the screen but it stays static. I also attempted to use 'display: none' on the image, but the image remains hidden instead of sliding down from the top.

役に立ちましたか？

解決

You need to include jQuery library file to use jQuery methods.

In the below sample a jquery cdn version is added. Also to slide down an image it has to be hidden first

<!DOCTYPE html>
<html>
    <head>
        <title>
        </title>
        <style>
        </style>
        <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
        <script type="text/javascript">
            $(document).ready(function() {
          $('img').slideDown('slow');
      });
        </script>
    </head>
    <body>
        <img src="images\sjmak-music-logo.jpeg" style="display: none"/>
    </body>
</html>

Demo: Fiddle

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