<html><body><h1>input formnovalidate 属性</h1><form action="/demo/html/action_page.php"> <label for="email">Enter your email:</label> <input type="email" id="email" name="email" required><br><br> <input type="submit" value="提交"> <input type="submit" formnovalidate="formnovalidate" value="不做验证的提交"></form><p><b>注释：</b>Safari 10 或更早的版本不支持 input 标签的 formnovalidate 属性。</p></body></html>