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クリックするたびにツイート文が変わるTwitterボタン

Last updated at Posted at 2014-06-22

クリックするたびに別の文章をつぶやけるTwitterボタンです。

デモ
http://jsdo.it/butchi/super_tweet

Twitterボタンのクリックイベントを拾うにはwidget.jsを読み込めばいいものだと思っていましたが、こちらの特別なスクリプトを読み込まなければいけないようです。

参考:
Tweet Button の独自イベントを取得してみる - しばやん雑記

index.html
<html>
<head>
  <title>スーパーツイート</title>
</head>

<body>

<div class="twitter">
    <a href="https://twitter.com/share" class="twitter-share-button" data-via="butchi_y" data-hashtags="すごいパンチ"  data-url="http://jsdo.it/butchi/super_tweet">Tweet</a>
</div>

<script type="text/javascript" charset="utf-8">
  window.twttr = (function (d,s,id) {
    var t, js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return; js=d.createElement(s); js.id=id;
    js.src="//platform.twitter.com/widgets.js"; fjs.parentNode.insertBefore(js, fjs);
    return window.twttr || (t = { _e: [], ready: function(f){ t._e.push(f) } });
  }(document, "script", "twitter-wjs"));
</script>

<script type="text/javascript" src="lib/jquery-1.10.2/js"></script>
<script type="text/javascript" src="lib/underscore-1.4.4/js"></script>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
main.js
var vocabulary = [
    'グレート',
    'エクセレント',
    'ネオ',
    '超絶',
    'ミラクル',
    '豪快',
    'ハイパー',
    'マスター',
    'ウルトラ',
    'グランド',
    'ワンダフル',
    'アルティメット',
    'メガ',
    'ギガ',
    'テラ',
    '何となくすごい',
    '面白'
];

var $twitterElm;
var superTxt;
var tweetHtml;

$(function() {
    $twitterElm = $(".twitter");
    tweetHtml = '<a href="https://twitter.com/share" class="twitter-share-button" data-via="butchi_y" data-hashtags="すごいパンチ"  data-url="http://jsdo.it/butchi/super_tweet">Tweet</a>'

    twttr.ready(function() {
        setTweet();

        twttr.events.bind('click', function() {
            setTweet();
        });
    });
});

function setTweet() {
    var superPrefix = _.first(_.shuffle(vocabulary),10).join('');
    superTxt = superPrefix + 'パンチ';
    $twitterElm.html(tweetHtml);
    $twitterElm.find('.twitter-share-button').attr('data-text', superTxt);
    twttr.widgets.load();
}
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