JavaScriptを使用してテキストを挿入する

Question

JavaScriptを使用して表示するテキストを取得しようとしていますが、動作させることができないと思われます。

それは拾われたようですが、実際にどこにでも表示されているように見えません。

<script type="text/javascript"> 
jQuery('.set1').each(function() { 
    jQuery(this).before(jQuery('<img>').text("Some Text put here with Javascript... ")); 
}); 
</script> 

<div class="image_carousel"> 
    <div id="foo1"> 
<img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-db-1.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="679" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-db-2.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="679" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-db-3.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="692" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-7.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="339" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-8.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="338" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-db-4.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="691" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-11.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="339" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vision-12.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="339" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/smug-1.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="710" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/smug-2.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="710" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/smug-3.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="710" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/smug-4.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="710" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/smug-5.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="710" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-4.png" class="set2" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-1.png" class="set2" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-7.png" class="set2" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-9.png" class="set2" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-3.png" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/volt-11.png" class="set2" alt="Photography | Rory DCS" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/hay-5.png" class="set3" alt="Photography | Alex Sainsbury" width="312" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/hay-4.png" class="set3" alt="Photography | Alex Sainsbury" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/hay-2.png" class="set3" alt="Photography | Alex Sainsbury" width="279" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/hay-3.png" class="set3" alt="Photography | Alex Sainsbury" width="292" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/hay-1.png" class="set3" alt="Photography | Alex Sainsbury" width="308" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/gana-1.png" class="set4" alt="Photography | Robert Charbonnet" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/gana-2.png" class="set4" alt="Photography | Robert Charbonnet" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/gana-3.png" class="set4" alt="Photography | Robert Charbonnet" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/gana-4.png" class="set4" alt="Photography | Robert Charbonnet" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/Peregrine-Shot_03-4.png" alt="Photography | David Goldman" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/Peregrine-Shot_09-84.png" alt="Photography | David Goldman" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/Peregrine-Shot_10-192.png" alt="Photography | David Goldman" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/Peregrine-Shot_16-48.png" alt="Photography | David Goldman" width="675" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/Peregrine-Shot_17-131.png" alt="Photography | David Goldman" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/ss2011-shot05-173.png" alt="Photography | David Goldman" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/ss2011-shot06-72-1.png" alt="Photography | David Goldman" width="300" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-db-1.png" alt="Photography | Chad Pickard and Paul McLean" width="672" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-3.png" alt="Photography | Chad Pickard and Paul McLean" width="343" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-4.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="342" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-db-2.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="671" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-7.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="298" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-8.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="299" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-db-3.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="694" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-db-4.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="685" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-13.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="341" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-14.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="343" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/09/vc-15.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="342" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/lurve-5.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="301" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/lurve-2.png" class="set1" alt="Photography | Chad Pickard and Paul McLean" width="673" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/lurve-3.png" class="set1"alt="Photography | Chad Pickard and Paul McLean" width="301" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/vampire-weekend.png" class="set2" alt="Photography | Alan Clarke" width="660" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/grizzle-bear.png" class="set2" alt="Photography | Alan Clarke" width="660" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/tg-5.png" class="set3" alt="Photography | Harley Weir" width="588" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/tg-11.png" class="set3" alt="Photography | Harley Weir" width="343" height="450" /><img src="http://www.dwmu.co.uk/wp-content/uploads/2011/07/tg-12.png" class="set3" alt="Photography | Harley Weir" width="341" height="450" /> 
    </div> 
    <div class="clearfix"></div> 
    <a class="prev" id="foo1_prev" href="#"><span>prev</span></a> 
    <a class="next" id="foo1_next" href="#"><span>next</span></a> 
    <div class="logbox" id="foo1_log"><p>Click the previous- or next-button</p></div> 
</div> 

任意のアイデア：

これは、コードのですか？

Answer 1

：ちょうどこのよう.before()方法のために右引数にコンテンツを置きますか？私はそれが右読めば、あなたがイメージタグでテキストを配置しようとしている画像

$('.set1').each(function() { 
    var text = $(this).attr('alt');//get the alt value 

    $(this).before('<span>' + text + '</span>');// put a span with the alt value before the image 
}); 

Answer 2

まず、ドキュメントの読み込みが完了する前にスクリプトが実行されています。 DOMが完全にロードされると、readyを使用してコールバックを実行します。次に、テキストを意味のある場所に配置する必要があります（つまり、要素内にはありません）。これは、1つの選択肢である：

jQuery(document).ready(function() { 
    jQuery(".set1").each(function() { 
     jQuery(this).before("<p>Some Text put here with Javascript..."); 
    }); 
}); 

簡単なデモ：http://jsfiddle.net/cRRVX/

Answer 3

私はあなたが 'ALT' や 'タイトル' attributesを意味かなり確信している：

jQuery(this).before(jQuery('<img>').attr("alt", "Some Text put here with Javascript... ")); 

など

Answer 4

あなたは1）ドキュメントが読み込まれるのを待つ必要があり、2）ページに表示するためにスパンやdivのような画像タグ以外にテキストを入れなければならない、3）cあなたがイメージする前にテキストを入れたい

jQuery(document).ready(function() { 
    jQuery('.set1').each(function() { 
     jQuery(this).before('<span>Some Text put here with Javascript... </span>'); 
    }); 
});