CODEWITHSUNDEEP
javascriptjqueryregex
ankur
ankur

Reputation: 4733

recursively remove "[" and "]" pattern in a string using javascript

I was trying to remove the "["or "]" pattern present in a string.

var str = "abc<1<2<>3>4>def";

while (str != (str = str.replace(/<[^<>]*>/g, "")));

using the above code which is removing "<" "<>" ">" pattern when i try to replace this with my operators it does'nt work .

any ways can any one provide me any regex or small one liner to replace all the operator present.

For ex a= [1[2]3][4
should be after removing 1234
 or
a =1[2]3]
should be after removing 123

Upvotes: 1

Views: 4651

Answers (3)

Narendra Yadala
Narendra Yadala

Reputation: 9664

This should work for you

var str = "abc[1[2[]3]4]def";
while (str != (str = str.replace(/\[[^\[\]]*\]/g, "")));

str becomes abcdef recursively removing all the enclosed text between []. This would work only if the square brackets are balanced.

You can use this regex if you need to remove all the brackets

var str = str.replace(/]|\[/g, "");

Upvotes: 1

Rory McCrossan
Rory McCrossan

Reputation: 337627

var str = "abc[1[2[]3]4]def".replace(/\[|\]/g, "");

Your while condition is not required here as the regex will remove all instances of [ and ] it finds due to the g global parameter.

Upvotes: 4

stema
stema

Reputation: 93026

What about just 

s = "[1[2]3][4"
s = s.replace(/[[\]]/g, "")

gives you the output

1234

Upvotes: 1

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