img要素のalt属性に値を
alt属性の値:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="ja" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="imagetoolbar" content="no" /> <title>DOM要素の属性(Attirbutes):属性(Attr):attr()の使用例 | jQuery</title> <link rel="stylesheet" type="text/css" href="/content/lib/global.css" /> <!-- JS --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script> <script type="text/javascript"> $(function(){ $("#btn_add_attr").click(function(){ $("#sample").attr("alt","くまさんケーキ"); $("#res").text($("#sample").attr("alt")); }); $("#btn_remove_attr").click(function(){ $("#sample").removeAttr("alt"); $("#res").text($("#sample").attr("alt")); }); }); </script> <link rel="stylesheet" type="text/css" href="/common/css/example.css"></head> <body id='example3' class='example'><div class="ads" style="margin:32px auto;text-align:center;"></div><h1 class='h'><a href='/'>PHP & JavaScript Room</a> :: 設置サンプル</h1> <h3 class='h'>実行結果</h3> <div id="wrap"> <h1>DOM要素の属性(Attirbutes):属性(Attr):attr()の使用例 | jQuery</h1> <!-- CODE --> <p> img要素のalt属性に値を<button id="btn_add_attr">設定</button> <button id="btn_remove_attr">削除</button> </p> <p><img id="sample" src="http://farm4.static.flickr.com/3222/2974008614_736e2d5b50_t.jpg" width="100" height="75" /></p> <p>alt属性の値:<strong id="res"></strong></p> <!-- CODE / --> </div> </body> </html>