[jonnekke]

Hi there,

I'm looking for a piece of code to search for the parts: "[kort] text [/kort]" in my string.
Between the tags is a variable text that I should extract.

I got it like this, but it's always false:

Code:

var my_str = document.getElementById('extrainfo').value;
var str = "~(?<=[kort]).*(?=[\/kort])~";			

if(my_str.search(str)==-1){
	alert("Not Found inside string");
} else {
	alert("Found inside the string and the location of the sub string is ");
}

anybody a suggestion how to solve this?

_j

[UnrealEd]

The search method of a string expects a pattern, not a string.

Lookbehind assertions aren't supported in javascript, so you can't use <?=. Searching for that piece of text doesn't require lookahead and lookbehind assertions. The following pattern should do just fine:

Code:

/\[kort\][^\[]*\[\/kort\]/

I did make a small change to the selected data from the pattern compared to your regex: it's less greedy. Using my pattern it will only match text between 1 [kort] - [/kort] tag-pair. Your pattern would match against the first occurence of [kort] and the last occurence of [/kort], regardless of how many [kort] [/kort]-pairs there are in the string. I think this will give you a little speed boost, as less buffer need to be maintained while processing the regex query

[jonnekke]

okay,

thnx for the answer. My java shoud look like this (I assume):

Code:

var my_str = document.getElementById('extrainfo').value;
var str = "/\[kort\][^\[]*\[\/kort\]/";			

if(my_str.search(str)==-1){
	alert("Not Found inside string");
} else {
	alert("Found inside the string and the location of the sub string is ");
}

I tried this, but no result:

Code:

var my_str = "[kort]test[/kort]";
			var str = "/\[kort\][^\[]*\[\/kort\]/";
			
			//document.write (my_str.search(str));

			if(my_str.search(str)==-1){
				//alert("Not Found inside string");
				document.write ("no match");
			} else {
				//alert("Found inside the string and the location of the sub string is ");
				document.write ("match");
			}

[UnrealEd]

You should remove the surrounding double quotes around the pattern:

Code:

var str = "/\[kort\][^\[]*\[\/kort\]/";

should be

Code:

var str = /\[kort\][^\[]*\[\/kort\]/;

[jonnekke]

great, it works!!

now working on extracting the part between [kort] and [/kort].
Going to work on that!


thnx again.