Find Text Between Two Strings And Prepend/append

Nov 9, 2010

I am attempting to manipulate a long text string with javascript. This text string may have one or more occurrences of a string which starts with a particular string and ends with another string. So, for example, text that starts with 'nam' and ends with 'sit' in this example:

Lorem ipsum dolor sit amet, consectetur adipiscing elit nam aliquam leo sit amet nibh tincidunt ultricies. Nullam nam feugiat velit sit amet dui scelerisque id ornare nulla ultricies.

I want to prepend another string before the nam and append another after the sitt, to give me:

Lorem ipsum dolor sit amet, consectetur adipiscing elit before nam aliquam leo sit after amet nibh tincidunt ultricies. Nullam before nam feugiat velit sit after amet dui scelerisque id ornare nulla ultricies.

I think the way to do this is via RegExp, but I'm insufficiently familiar with this to know how to write the expression.

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