When to use GET, search and delete
When to use POST, add, change (Special: use POST to log in, because the username and password cannot be displayed on the URL)
4 ways to get parameters
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <script type="text/javascript"> function Go() { window.location.href="localhost:21811/Handler1.ashx?id=1&name='abc'" } </script> </head> <body> <!--//参数传递的几种形式--> <!--第一种:直接在URL后面加参数:--> localhost:21811/Handler1.ashx?id=1&name="abc" <!--第二种:用超链接的方法传递参数:当点击超链接的时候,首先会跳转到localhost:21811/Handler1.ashx页面,然后还会传递id 和name 两个参数过去--> <a href="localhost:21811/Handler1.ashx?id=1&name='abc'">超链接传递参数</a></body> <!--第三种:通过js方法传递:用户点击这个button按钮,触发onClick事件,执行Go()方法,跳转到localhost:21811/Handler1.ashx页面,同时传递了id,和name两个参数过去--> <input type="button" onclick="Go()" value="通过js方法传递参数" /> <!--第四种:通过form表单传递--> <form action="Handler1.ashx" method="get"><!--注意action里面的连接不能带参数的-->> <input type="text" name="id" value="3" /> <input type="text" name="name" value="abc" /> <input type="submit" value="通过传递参数" /> </form> </body> </html>
Through the above specific implementation code, I hope it will be helpful for everyone to understand these four parameter transfers.