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Subject:
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Want to Strip Chars from a String - Not Working
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Posted By:
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WebDevel
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Post Date:
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1/7/2004 2:33:25 PM
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Can someone point me in the right direction, please?
I have a multi-page online form.
I save the contents of each page in a cookie, using Name/Value pairs
-- with the equal-sign ("=") and the semi-colon (";") as delimiters.
The above was working fine.
Then I discovered that if the user enters an equal-sign or a semi-colon in a text box or textarea field, my Name/Value pairs no longer work.
So I tried to write a function (stripDelim.js) to be included in each page of the form, which would take the string that the user entered and strip from it any equal-sign or semi-colon characters it encountered, before returning it and adding it to the cookie string.
However, whether I say:
if ( charAt(strOld[i]) == charAt(strDelim[j]) )
or I say:
if ( strOld.charAt[i] == strDelim.charAt[j] )
I keep getting an error (in the 1st case) or the value "undefined" when I display these variables in an alert box (in the 2nd case). .
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Below is my function:
strDelim = ";="; // string containing cookie delimiters
function stripDelim(strOld){
/*
input = string entered by user ("strOld")
output = user string with delimiters stripped from it ("strNew")
if the character at strOld[i] is not a cookie delimiter, then add the character to strNew
when done, return strNew
*/
var strNew = "";
for (var i = 0; i < strOld.length; i++)
{
for (var j = 0; j < strDelim.length; j++)
{
// if ( charAt(strOld[i]) == charAt(strDelim[j]) )
if ( strOld.charAt[i] == strDelim.charAt[j] )
{
// do nothing
}
else
{
strNew += strOld.charAt[i];
}
alert ("strOld.charAt[i] = " + strOld.charAt[i] + " strDelim.charAt[j] = " + strDelim.charAt[j] + " strNew = " + strNew);
} // end inner for
} // end outer for
return strNew;
} // end function
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Below is how I included the function in the 1st page of my form (N.B., if it matters, I also had another script in the Head, specific to Page 1):
<head>
<title>Multipage Application Form - Page 1</title>
<script type="text/javascript" src="stripDelim.js">
</script>
<script language="JavaScript">
var strForm1 = ""; // global variable
function gotoNext(){
// blah, blah, blah
} // end function gotoNext()
</head>
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Below is how I called stripDelim() in my function gotoNext() for Page 1:
var strCookie = "StartForm1;";
for (var i = 0; i < frmPage1.elements.length - 1; i++)
{
if (frmPage1.elements[i].type == "text" || frmPage1.elements[i].type == "textarea")
{
strCookie += stripDelim(frmPage1.elements[i].value) + ";";
}
else
{
strCookie += frmPage1.elements[i].value + ";";
}
} // end IF
} // end For-Loop
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Reply By:
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joefawcett
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Reply Date:
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1/8/2004 5:28:04 AM
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I would suggest you use the escape function, or if your target browsers allow it the encodeURIComponent function on the string before you put in the equals sign and semi-colon:
var sName = "Joe=";
var sValue = "Fawcett;";
var sCookie = escape(sName) + "=" + escape(sValue) + ";";
alert(sCookie);
or you could use regular expressions and the replace method.
--
Joe
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Reply By:
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planoie
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Reply Date:
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1/10/2004 12:08:47 PM
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Here's a link to a javascript example that uses cookies and seems to handle commas and equal signs in the data.
http://javascript.internet.com/cookies/address-book.html#source
Peter
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Work smarter, not harder.
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