Regular Expression Help AS3?

Question

I am working on a regular expression and I need to extract two parts of an expression that is being imported through a flashvars.

//sample data similar to what comes in from the flashvars. Note that the spaces are not after the and symbol, they are there because the html strips it.
var sampleText:String = "height1=60& amp;height2=80& amp;height3=95& amp;height4=75& amp;"

var heightRegExp:RegExp = /height\d/g;   //separates out the variables

var matches:Array = sampleText.match(heightRegExp);

Now I need help isolating the values of each variable and putting them in an array...For instance, 60, 80, etc. I know I should be able to write this regular expression, but I just can't get the exec expression right. Any help would be really appreciated!

are you just trying to access the properties of the flashvars string? if so, you should just use the loaderInfo.parameters object. — gthmb, Sep 14 '11 at 15:00
No, I can access the parameters individually using the regular flashvars methods. Instead, I'd like to be able to use the string to dynamically create a reusable object. Therefore, the name/value pairs passed through will differ in purpose and will need to be parsed out to different arrays. — Shelley, Sep 14 '11 at 20:56

score 0 · Answer 1 · answered Sep 14 '11 at 15:01

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sorry for not answering the question with regexes directly. I would do this:

var keyvalues:Array = sampleText.split("& amp;");
var firstkey:String = keyvalues[0].split("=")[0];
var firstvalue:String = keyvalues[0].split("=")[1];

Would that help beside the fact, that it is not using RegEx?

answered Sep 14 '11 at 15:01

ghost23

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why not just do: var value:String = this.loaderInfo.properties['key'] ? :) – gthmb Sep 14 '11 at 15:08
i assume, that the string she mentions is a complete value within a key. that's why it says "& amp;" – ghost23 Sep 14 '11 at 15:14
The problem is that there are different types of variables coming in in the url. It is creating a dynamic table, so ultimately there will be rows and columns and headers, so I need to be able to put them in different arrays. I can't put all of the values in the same array...so I'm thinking I first need to parse out which values I want to put in which arrays. And I'll never know how many there will be. One table may have two headers and 4 rows and another may have 3 columns and one header and 5 rows...does that make sense? – Shelley Sep 14 '11 at 15:17
yes, it does. you could probably still work through the ONE array after the splitting and build your individual array from there, but i admit, having a clever RegEx is probably the better solution. Unfortunately i cannot give it to you right out of my head :) – ghost23 Sep 14 '11 at 15:26

score 0 · Answer 2 · answered Sep 14 '11 at 15:13

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Neither the =, & or the ; are special characters, so I think you can use

=|&amp;

in a split call and then the values will be in the odd indices and the height2 style names would be in the even indices.

answered Sep 14 '11 at 15:13

John Uckele

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score 0 · Answer 3 · answered Sep 14 '11 at 17:16

You can use URLUtil.stringToObject()

Something like this should work:

var s:String = "name=Alex&age=21";
var o:Object = URLUtil.stringToObject(s, "&amp;", true);

However, if you're just getting the flashvars, you should pull them from the loaderInfo of the root.

this.root.loaderInfo.parameters;

Regular Expression Help AS3?

3 Answers3