This is a program for learning to write regular expressions in JavaScript. There is a text in higher textarea matched to a regular expression, which is hidden. Below the textarea is a string of matches. These matches are highlighted in text. You can see the regular expression by pressing a button, but do not hurry to do that! Try to guess it. There is a copy of the text in lower textarea. Insert into a textfield a correct regular expression that produces the same set of matches as above. Check youself by pressing 'match inserted and text' button.

A program for finding matches of inserted regular expressions in inserted text is here. A program for learning to read regular expressions is here.

here you can go to any exercise
exercise of
regular expression:
matches of inserted:

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