CODEWITHSUNDEEP
javascriptregex
drpzz
drpzz

Reputation: 55

Changing the tags with the text between the tags

My title sounds complicated so i'll try to simplify it by making an example

i have these selfmade tags like 

{tag}tagtext{tag}

and i'm trying to change this into 

<span>same tagtext</span>

i tried using regex but i couldn't really figure out how could i get the text between the tags and then also change the tags to something else.

i got the text between the tags with 

string.match('{tag}(.*){tag}');

Also all the tags are same and for some reason the match function gave me only the first result it found. I guess it has something to do with my regex.

Also i do not want to do it with a loop because it will start to work as an live editor and i need to keep the performace fast.

Upvotes: 0

Views: 44

Answers (2)

Kerwin
Kerwin

Reputation: 1212

/(\{tag\})(.*?)\1/g
 ^^^^^^^^^  ^^ ^^ ^  
    1        2  3 4
1: Match tag and put in group 1
2: *? Quantifier — Matches between zero and unlimited times, as few times as possible, expanding as needed (lazy)
3: matches the same text as most recently matched by the 1st capturing group
4: Global pattern flags, all matches.


var temp = "{tag}tagtext1{tag}{tag}tagtext2{tag}\n{tag}tagtext3{tag}{tag}tagtext4{tag}";
console.log(temp.replace(/(\{tag\})(.*?)\1/g,"<span>$2</span>"));

Is this your expect result ?

<span>tagtext1</span><span>tagtext2</span>
<span>tagtext3</span><span>tagtext4</span>

Upvotes: 1

Matthew Lagerwey
Matthew Lagerwey

Reputation: 120

You have to use the global modifier or g after a RegEx expression in order to enable all matches. What language are you using for RegEx?

Upvotes: 0

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