display属性はjQueryで簡単に確認出来る <h1 class="h1">Yoshida</h1> <img src="yoshida.png" alt="yoshida" class="img"> console.log($('.h1').css('display')); // block console.log($('.img').css('display')); // inline

?P<任意の名前> $pattern = '/[a-z]+_(?P<num>\d+)_[a-z]+/'; $string = 'yoshida_43_kazu'; preg_match($pattern, $string, $matches); var_dump($matches['num']); // 43</num>