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  <author_name>mtoyoshi</author_name>
  <author_url>https://blog.hatena.ne.jp/mtoyoshi/</author_url>
  <blog_title>mtoyoshi開発メモ</blog_title>
  <blog_url>https://mtoyoshi.hateblo.jp/</blog_url>
  <categories>
    <anon>Javascript</anon>
  </categories>
  <description>面倒くせぇぇぇぇえ。 javascriptで配列から任意のindexの要素を削除するのに、deleteを使ってみたけど、これだと配列オブジェクトのlength値が変わらねぇ！ var ary = new Array(); ary.push('hoge'); ary.push('fuga'); ary.push('piyo'); function print() { for(var key in ary) { console.log(key + ' : ' + ary[key]); } } console.info('削除前 : ' + ary.length); print(ary); dele…</description>
  <height>190</height>
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  <image_url></image_url>
  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2007-11-29 17:47:22</published>
  <title>配列のlengthの振る舞い</title>
  <type>rich</type>
  <url>https://mtoyoshi.hateblo.jp/entry/20071129/1196326042</url>
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