Show HN: HTML placeholder trick – showing element when input has value(codepen.io)8 ポイント·投稿者 mjunaidi·7 年前·1 コメントcodepen.ioShow HN: HTML placeholder trick – showing element when input has valuehttps://codepen.io/mjunaidi/pen/oNNwwer1 コメントコメントを投稿[–]loueed·7 年前返信Alternative method using the input:valid selector https://codepen.io/LoueeD/pen/mddwBpv:valid is supported by IE10
:valid is supported by IE10