Regular expression help

[FrankIsHere@gmail.com]

How can I strip out the text from within this "href" attribute?

Here is the input:
<span href="/test.htm&parame ter=2"></span>

What I'd like to get back is:
/test.htm&parame ter=2


Thanks!
Frank

[Evertjan.]

Re: Regular expression help

wrote on 20 jan 2006 in comp.lang.javas cript:
[color=blue]
> How can I strip out the text from within this "href" attribute?
>
> Here is the input:
> <span href="/test.htm&parame ter=2"></span>
>
> What I'd like to get back is:
> /test.htm&parame ter=2[/color]

t = '<span href="/test.htm&parame ter=2"></span>'

t = t.replace(/^.*"(.*)".*$/,'$1')

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[Lasse Reichstein Nielsen]

Re: Regular expression help

FrankIsHere@gma il.com writes:
[color=blue]
> How can I strip out the text from within this "href" attribute?
>
> Here is the input:
> <span href="/test.htm&parame ter=2"></span>
>
> What I'd like to get back is:
> /test.htm&parame ter=2[/color]

Well, that's easy:

function getHref(input) {
return "/test.htm&parame ter=2";
}

But seriously, you should be very careful to know exactly what can
vary in the input. Is it always a span element (unlikely, since
they don't have href attributes)? Is it always the href attribute
you need? And is it always contained in double quotes?

Let's assume that you are looking for just one href attribute where
the value is in double quotes. Then the following regular expression
will capture that:

var re = /\bhref="([^"]*)"/;

In a function it would be:
function getHrefRE(input ) {
var re = /\bhref="([^"]*)"/;
var match = input.match(re) ;
if (match) {
return match[1];
}
}


If the quotes can be either single and double quote, a regexp might
be:
var re2 = /\bhref=(['"])([^\1]*)\1/;
where the content is match[2].


Good luck
/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

[RobG]

Re: Regular expression help

FrankIsHere@gma il.com wrote:[color=blue]
> How can I strip out the text from within this "href" attribute?
>
> Here is the input:
> <span href="/test.htm&parame ter=2"></span>
>
> What I'd like to get back is:
> /test.htm&parame ter=2
>[/color]

Normally you can just get the attribute value:

alert( refToSpan.href ); // Shows /test.htm&parame ter=2


But span elements don't have href attributes so it will not work
reliably - some browsers do not let you access invalid attributes. You
could use an A element:


<a href="/test.htm&parame ter=2" name="theLink"> </a>

<script type="text/javascript">
alert( document.links[0].href );
</script>



--
Rob

[mick white]

Re: Regular expression help

FrankIsHere@gma il.com wrote:[color=blue]
> How can I strip out the text from within this "href" attribute?
>
> Here is the input:
> <span href="/test.htm&parame ter=2"></span>
>
> What I'd like to get back is:
> /test.htm&parame ter=2
>
>[/color]
output="/"+input.spl it("/")[1]

Mick

[Evertjan.]

Re: Regular expression help

mick white wrote on 20 jan 2006 in comp.lang.javas cript:
[color=blue]
> FrankIsHere@gma il.com wrote:[color=green]
>> How can I strip out the text from within this "href" attribute?
>>
>> Here is the input:
>> <span href="/test.htm&parame ter=2"></span>
>>
>> What I'd like to get back is:
>> /test.htm&parame ter=2
>>
>>[/color]
> output="/"+input.spl it("/")[1][/color]

gives:

/test.htm&parame ter=2"><

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

[FrankIsHere@gmail.com]

Re: Regular expression help

Thanks guys!

The reason I use it in a span tag and not an <a> tag is because of
custom XSL parsing I do on my web application, but that is irrelevant
to the problem.

I have been doing it this way and it seems to work so far, but I'm not
a javascript guy so I don't know if there could be any potential
problems with the way I'm doing it. What do you guys think?

Here's what I'm using:

function stripHref(tag) {
test2 = tag.replace("<s pan href=","");
last = test2.replace(" ></span>","");

//alert(last);
if (last.match(/^'.*'$/) || last.match(/^".*"$/)) {
return last.substring( 1,last.length-1);
}
return last;
}


-Frank

[mick white]

Re: Regular expression help

Evertjan. wrote:
[color=blue]
> mick white wrote on 20 jan 2006 in comp.lang.javas cript:
>
>[color=green]
>>FrankIsHere@g mail.com wrote:
>>[color=darkred]
>>><span href="/test.htm&parame ter=2"></span>
>>>
>>>What I'd like to get back is:
>>>/test.htm&parame ter=2
>>>[/color]
>>
>>output="/"+input.spl it("/")[1][/color]
>
> gives:
>
> /test.htm&parame ter=2"><
>[/color]
oops
Mick

[Dr John Stockton]

Re: Regular expression help

JRS: In article <Xns97519A551C8 A9eejj99@194.10 9.133.242>, dated Fri, 20
Jan 2006 14:10:13 remote, seen in news:comp.lang. javascript, Evertjan.
<exjxw.hannivoo rt@interxnl.net > posted :[color=blue]
>mick white wrote on 20 jan 2006 in comp.lang.javas cript:
>[color=green]
>> FrankIsHere@gma il.com wrote:[color=darkred]
>>> How can I strip out the text from within this "href" attribute?
>>>
>>> Here is the input:
>>> <span href="/test.htm&parame ter=2"></span>
>>>
>>> What I'd like to get back is:
>>> /test.htm&parame ter=2
>>>
>>>[/color]
>> output="/"+input.spl it("/")[1][/color]
>
>gives:
>
>/test.htm&parame ter=2"><[/color]

However, output = input.split('"' )[1] seems likely to do what is in
general necessary.

--
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