20. WMLScript URL Standard Library
WMLScript's
URL standard library contains functions for manipulating URLs.
In
the following sections, we will look at some of the more commonly
used functions in the URL standard library.
20.1. Getting the Current
WMLScript Document's URL: getBase() Function
The
getBase()
function of the URL standard library is used to get the current WMLScript document's URL without
the fragment part (the fragment of a URL is the part that begins with
the # character). Note that the URL returned is always in the
absolute form.
The
following WML/WMLScript example demonstrates the use of the getBase()
function. Let's say we have a WML document that contains the markup
below:
<card
id="card1" title="Card
1"> <p> <anchor> <go
method="get"
href="tutorial_eg.wmls#func1()"> <postfield
name="x" value="abc"/> <postfield
name="y" value="123"/> </go> Run
WMLScript </anchor> </p> </card>
If
we open the WML card in a WAP browser and select the "Run
WMLScript" anchor link, the func1()
function in the WMLScript file tutorial_eg.wmls will be
executed. Below shows the script included in the tutorial_eg.wmls
file:
extern
function func1() { var url_str = URL.getBase(); }
func1()
contains only a single line of statement. After the statement is
executed, the url_str
variable has the string value
"http://www.developershome.com/examples/wmlscript/tutorial_eg.wmls?x=abc&y=123".
(Suppose the tutorial_eg.wmls
file is stored in the directory "examples/wmlscript/" of
the host "www.developershome.com".)
We
can further extract the query string in the url_str variable
using the getQuery()
function, which will be covered in this tutorial later.
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