HTML5 使用正则表达式
- 作者: 乱气质
- 来源: 51数据库
- 2022-09-21
<form action="" method="post"> <label for="username">Create a Username: </label> <input type="text" name="username" id="username" placeholder="4 <> 10" pattern="[A-Za-z]{4,10}" autofocus required> <button type="submit">Go </button> </form>
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