Detailed explanation of the four forms of parameter passing

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Detailed explanation of the four forms of parameter passing_Basic knowledge

May 16, 2016 pm 03:49 PM

Parameter passing

This article is summarized in daily work. The four forms of parameter transfer are shown below.

When to use GET, search, 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

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; 
&lt;head&gt; 
&lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8"/&gt; 
 &lt;title&gt;&lt;/title&gt; 
 &lt;script type="text/javascript"&gt; 
  function Go() { 
   window.location.href="localhost:21811/Handler1.ashx&#63;id=1&name='abc'" 
  } 
 &lt;/script&gt; 
&lt;/head&gt; 
&lt;body&gt;

Copy after login

Copy code The code is as follows:

localhost:21811/Handler1.ashx?id=1&name="abc"

<!--Second: Use hyperlink method to pass parameters: When clicking the hyperlink, it will first jump to the localhost:21811/Handler1.ashx page, and then pass the two parameters id and name to the past - ->

<a href="localhost:21811/Handler1.ashx?id=1&name='abc'">Hyperlink transfer parameters</a></body>

<input type="button" onclick="Go()" value="Pass parameters through js method" />

 &lt;form action="Handler1.ashx" method="get"&gt;&lt;!--注意action里面的连接不能带参数的--&gt;&gt; 
  &lt;input type="text" name="id" value="3" /&gt; 
  &lt;input type="text" name="name" value="abc" /&gt; 
  &lt;input type="submit" value="通过传递参数" /&gt; 
 &lt;/form&gt; 
&lt;/body&gt; 
&lt;/html&gt;

Copy after login

Through the introduction of the above code, I believe everyone will like it.

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