slice() and splice() 1

[stormbind]

Hi all,

I have seen the msdn documentation on slice() or splice() methods but cannot get them to work, and always fall back on performing multiple instanced of split()

So I would like confirmation that these methods work in JScript.

My emmediate problem may not involve the above. I have a URL containing valuable data, currently extracted with split() and I'm hoping someone will recommend a more efficient solution.

var uri = '?file=23%dblurb'

Fortunately, there's only one = and it appears the value is always followed by a %.

uri = uri.split('=');
uri = uri[1].split('%');
uri = uri[0];

The reason I don't like this is because some of those URLs are 100 or more characters in length, many of those characters are % and there may be hundreds if not thousands of URLs to parse. The current solution feels innefficient

I don't want to bog JScript down. Any suggestions?

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[jemminger]

what exactly are you trying to extract? it looks like the result of your example would be "23"

why not unescape the string first?

=========================================================
-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); }

 

[stormbind]

Yes, there is an integer between 1 and 999+ in the URL.

The integer may be followed by . or - or & (I think) which all appear as %...

At the moment, I'm creating an array of URLs and then an array of integers but only tested it with 20 or so URLs at a time.

I'm concerned it's going to bog JScript down if the number of URLs increases too much so am hoping for a more efficient means of extracting the integers.

----------
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[jemminger]

if there's only one integer from 1 - 999 in each string, then you can extract using String.match(regex) like so:

arUris = ["?file=23%dblurb", "?file=24%dblurb", "?file=25%dblurb"];
arNums = [];

for (var x = 0; x < arUris.length; x++) {
	arNums.push( arUris[x].match(/\d{1,3}/) );
}

alert(arNums)

=========================================================
-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); }

 

[stormbind]

I think I'm going to need a tip re: slicy-splicy stuff anyway

There'a another array containing user data. Some of it is to be posted via a form, but some of it is sensitive and must not appear in any web page :/

var a = new Array('bad','bad','OK','OK','OK','bad','bad','bad');

Those aren't the actual values, just highlighting which ones are OK for posting

This is a job for slice() isn't it? I think MSDN says to use the following to get a = 'OK','OK','OK';

a = a.slice(3,5);

But it doesn't work for me :/

----------
I'm willing to trade custom scripts for... [see profile]

 

[jemminger]

actually, this:

var a = new Array('bad','bad','OK','OK','OK','bad','bad','bad');
a = a.slice(3,5);
alert(a);


will return 'OK','OK'

since you're starting at index 3 and ending before index 5.

are you not getting any results? what OS/browser?



=========================================================
-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); }