JavaScript:document.body.innerHTML=document.body.innerHTML.replace(/>[あ-ン]{4,}/g, function(s){var a = s.split('');var r = 2 + parseInt(Math.random() * 3);a[r] = '<span style="color:red;font-weight:bold;">'+a[r]+'</span>';return a.join('');});focus();
ツイートシェア