xxxxxxxxxx<html><head> <meta charset="utf-8"> <title>W3Cschool(w3cschool.cn)</title> </head><body><form action="/statics/demosource/demo-form.php" method="get"> <input type="checkbox" name="vehicle" value="Bike"> I have a bike<br> <input type="checkbox" name="vehicle" value="Car" checked="checked"> I have a car<br> <input type="submit" value="提交"></form></body></html>