I try to write a simple Markdown parser in JavaScript. Therefore I want to check for the [link content][link id] syntax. I use the following code:
data = data.replace( /\[(.*?)\][ ]*\[([0-9]+)\]/g, '<a href="$2">$1</a>' );
It works well, but now I want to do this with a RegExp object. So I set up the following bit of code:
var r = new RegExp( '\[(.*?)\][ ]*\[([0-9]+)\]', 'g' );
data = data.replace( r, '<a href="$2">$1</a>' );
But it doesn't work. It even says that my regular expression (which works since the first example does a good job) is invalid:
unmatched ) in regular expression
I think it must have to do with some RegExp-object peculiarities I am not aware of.
What am I doing wrong and how can the problem be solved?
Copyright Notice：Content Author:「okoman」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/516917/javascript-regexp-objects