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Answer 1

+2 A:

Using javascript and regex -

a.replace(/##66##[a-zA-Z0-9]*!!/g,"")

If you want to parameterize this then you can do as given below where start and end are your parameters-

    var a = "##55##data1!!##66##data4545!!##77##data44!!";
    var start = "##66##";
    var end = "!!";

    var re = new RegExp(start + "[a-zA-Z0-9]*" + end, "g");

    return a.replace(re,"");

Sachin Shanbhag 2010-09-21 09:26:03

@Sachin:if the data changes ,how is the replace to be made?

Hulk 2010-09-21 09:29:54

I think the question is about how to extract data item 66 from the string, regardless of what is contained in 'data'.

fredley 2010-09-21 09:30:03

@Hulk - Everytime do you know what data to replace? If yes, then you can have a function for replace and pass this data as argument. Is that ok? or if you can explain in detail the situtation in your question, it would be helpful.

Sachin Shanbhag 2010-09-21 09:32:30

@fredley:you are right.

Hulk 2010-09-21 09:32:42

@Hulk you might want to edit your question and phrase it a little more clearly

fredley 2010-09-21 09:33:19

@Hulk - The edited question still does not give any information on what is required. Its a bit confusing. If its about extracting data 66 from the string given, there should be a definite pattern which you need to tell us in the question from which you can extract data. Something like do you want to get all data enclosed within ## and ## or something like that.

Sachin Shanbhag 2010-09-21 09:36:36

@Sachin hehehe. you asked for an edit, you got it! lol

Reigel 2010-09-21 09:39:32

@Hulk - Edited my answer. Please check now if this is what you are looking for. I tested this, and it gives your expected output.

Sachin Shanbhag 2010-09-21 09:54:51

@Sachin:Excellet answer.Thanks

Hulk 2010-09-21 10:33:28

Answer 2

A:

Regex way, with global flag g to catch all matches:

a.replace(/##66##data!!/g,"")

annakata 2010-09-21 09:29:49

I think you've misunderstooed the question, it is about parsing the string to get the value of 'data' for item ##66##.

fredley 2010-09-21 09:30:51

if the data changes to a string say"abcdfeg" ,how is the replace to be made?

Hulk 2010-09-21 09:30:54

@fredley - I don't think that's at all clear. It explicitly says removal and sounds like removal based on a dynamic value, but it could be extraction admittedly.

annakata 2010-09-21 10:02:33

@Hulk - if `data` is a dynamic value you can either allow for a general match (replace data with `.*?`) or you can build a Regex dynamically on the explicit value you're looking for.

annakata 2010-09-21 10:04:16

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Split a string on a pattern

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