HTTP GET and POST requests
• In HTML,
one can specify two different submission methods for a form. The method is
specified inside a FORM element, using the METHOD attribute.
• The
difference between METHOD="GET" (the default) and
METHOD="POST" is primarily defined in terms of form data encoding.
The official recommendations say that "GET" should be used if and
only if the form processing is idempotent, which typically means a pure query
form. Generally it is advisable to do so.
• Problems
related to long URLs and non-ASCII character repertoires which can make it
necessary to use "POST" even for idempotent processing.
GET
• The Get
is one the simplest Http method. Its main job is to ask the server for the
resource.
• If the
resource is available then it will given back to the user on your browser. That
resource may be a HTML page, a sound file, a picture file (JPEG) etc.
• We can
say that get method is for getting something from the server. It doesn't mean
that you can't send parameters to the server. But the total amount of
characters in a GET is really limited.
• In get
method the data we send get appended to the URL so whatever you will send will
be seen by other user so can say that it is not even secure.
POST
• The Post
method is more powerful request. By using Post we can request as well as send
some data to the server.
• We use
post method when we have to send a big chunk of data to the server, like when
we have to send a long enquiry form then we can send it by using the post
method.
Example
<html>
<head><title>Using
Post Method in Form.</title></head> <body>
<form
method="post">
Enter your name: <input type="text‖
size="20" name="txtName" />
<input type="submit"
name="B1" value="Submit" />
<input type="reset"
name="B2" value="Reset" />
</form>
</body>
</html>
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