Announcement

**poccil** · Jul 11, 2002, 04:44 PM

Unless I'm mistaken, percentage symbols are disallowed in URLs because of their role in escaping foreign characters (including itself).

There is a JavaScript function named escape that performs this escaping work. Call it before passing the URL value.

Any '%' in a string passed to escape will be replaced with "%25".

The reason why a string like "a_123%CDE_GHI%KL" will not be the same when unescaped by the browser is because of the two characters that follow the first '%'. Since 'CD' is a valid combination of hexadecimal characters, the "%CD" part of the string is replaced by its represented character, 'ح'.

More information on escape:

[escape Function]

Encodes [strings] so they can be read on all computers.

[Syntax:]
escape(charString)

The required charString argument is any [string] to be encoded.

Remarks
The escape method returns a string value ... that contains the contents of charString. All spaces, punctuation, accented characters, and any other non-ASCII characters are replaced with %xx encoding, where xx is equivalent to the hexadecimal number representing the character. For example, a space is returned as "%20."

**huzefahakim** · Jul 11, 2002, 05:08 PM

I realize this, so I try to escape the strings before form the URL. But the function that does the escape receives the wrong value.

Have a look at this

Here are the two files

1. Test1. html

2. test.jsp

Notice the behaviour of substring '%CD' in the first string compared to the other % in both the links

Huzefa

test1.html

<html>
<head>
<script language="Javascript1.2">
function getEscapedUrl(url, arg1, value1,arg2,value2,arg3,value3){

document.write('Orginal Value is /a_123%CDE_GHI%KL/ <br><br> Value received from the function is '+value3);
alert("Original Value = /a_123%CDE_GHI%KL/ ) & Received Value = "+value3);
completeUrl=escape(url)+'?'+escape(arg1)+'='+escape(value1)+'&'+escape(arg2)+'='+escape(value2)+'&'+ escape(arg3)+'='+escape(value3);
newWindow = window.open(completeUrl,'blank','width=200,height=200,scrollbars=yes,menubar=no,toolbar=no,resizable =yes');

return completeUrl;

}

function openNewPage( newurl, newtarget , width , height, toolbar){
newWindow = window.open(newurl,newtarget,'width='+width+',height='+height+',scrollbars=yes,menubar='+toolbar+',t oolbar='+toolbar+',resizable=yes');
newWindow.focus();
}
</script>
</head>
<body>

<b>

Get the escaped url of<br>
</b>

1. <A href="javascript: openNewPage(getEscapedUrl('test.jsp','serverName','[email protected]','type','img_hit','id','/a_123%CDE_GHI%KL/'),'blank','200','200','no')">/a_123%CDE_GHI%KL/ </a>- Works only in Netscape<br>

2. <A href="javascript: openNewPage(getEscapedUrl('test.jsp','serverName','[email protected]','type','img_hit','id','/GTE%ST4_GHI/'),'blank','200','200','no')">/GTE%ST4_GHI/</a> - works fine in IE and Netscape

</body>
</html>

test.jsp
<%
out.println("Value of Parameter ID from the request = " + request.getParameter("id"));
%>

**Soldier Bob** · Jul 11, 2002, 05:19 PM

huh?

First off in IE i get a error

line: 11
char: 96
Error: Unterminated String constant

from the page... havent bothered to figure out what that is..

Anyhow, this code will submit data to a page like a jsp. It might be a simpler approach then what I see you doing. Adding a target="blank" to the form tag can allow you to send the results of a form submission to a new window I believe.

But dont use 'blank' _blank is a reserved word ... and well use something like 'TestWindow' if you really have to...

/a_123%CDE_GHI%KL/ gets turned into
test102.html?txtTestData=%2Fa_123%25CDE_GHI%25KL%2F

test102.html

Code:

<html>
<head>
<script type="text/javascript" language="javascript">
  function process_data( the_data) {
    alert( the_data );
    document.frmTest.action="test102.html";
    document.frmTest.submit();
  }
</script>
</head>
<body>
  <form name="frmTest" action="javascript:void(0);" method="get">
    <input type="text" name="txtTestData" value="">
    <input type="button" name="btnReadData" value="Process Data" onclick="process_data(document.frmTest.txtTestData.value);">
  </form>
</body>
</html>

-S. Bob

**huzefahakim** · Jul 11, 2002, 05:34 PM

well my problem is more complicated and I cannot use forms to submit. I need to form URLs to pass parameters.

In other words, when you pass the String '/a_123%CDE_GHI%KL/' to the following

function getEscapedUrl(value){
alert(value);
}

you would get the output as '/a_123حE_GHI%KL/'.

Can someone help me with a way to get the original value back in the function before I can use it to escape.

Huzefa.

**glenngv** · Jul 11, 2002, 10:58 PM

function getEscapedUrl(value){
alert(escape(value));
}

Originally posted by huzefahakim
well my problem is more complicated and I cannot use forms to submit. I need to form URLs to pass parameters.

In other words, when you pass the String '/a_123%CDE_GHI%KL/' to the following

function getEscapedUrl(value){
alert(value);
}

you would get the output as '/a_123حE_GHI%KL/'.

Can someone help me with a way to get the original value back in the function before I can use it to escape.

Huzefa.

**huzefahakim** · Jul 12, 2002, 11:45 AM

function getEscapedUrl(value){
alert(escape(value));
}

This function would give back the value
'/a_123%CDE_GHI%25KL/'

instead of '/a_123%CDE_GHI%KL/'.

Huzefa.

Announcement

Passing special characters to javascript functions

Passing special characters to javascript functions

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