Javascript Regex: Testing string for intelligent query
- by Shyam
Hi,
I have a string that holds user input. This string can contain various types of data, like:
a six digit id
a zipcode that contains out of 4 digits and two alphanumeric characters
a name (characters only)
As I am using this string to search through a database, the query type is determined on the type of search, which i want to handle serverside using JavaScript (yes, I am using JavaScript serverside). Searching on StackOverflow, brought me some interesting information, like the .test-method, which seems perfect for my needs. The test-method returns either true or false based on the evaluation on the string using a regex object.
I am using this page as a reference:
http://www.javascriptkit.com/jsref/regexp.shtml
So I am trying to determine the zipcode, by using the following very noobish regex.
var r = /[A-Za-z]{2,2}/
As far I can understand, this should limit the amount of occurrences of alphanumeric characters to a maximum of two. See beneath the output of my JavaScript console.
> var r = /[A-Za-z]{2,2}/
> var x = "2233AL"
> r.test(x)
true
> var x = "2233A"
> r.test(x)
false
> var x = "2233ALL"
> r.test(x)
true /* i want this to be false */
>
A little help would be really appreciated!
