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<!DOCTYPE html> <html> <body> <h1>input pattern 属性</h1> <p>带有不能包含以下字符的搜索字段的表单：'或"</p> <form action="/action_page.php"> <label for="search">搜索：</label> <input type="search" id="search" name="search" pattern="[^'\x22]+" title="无效输入"> <input type="submit"> </form> </body> </html>