<html><body><h1>input value 属性</h1><form action="/demo/action_page.php"> <label for="fname">名字：</label> <input type="text" id="fname" name="fname" value="Bill"><br><br> <label for="lname">姓氏：</label> <input type="text" id="lname" name="lname" value="Gates"><br><br> <input type="submit" value="提交"></form></body></html>