Client-Side Web App - Reverse Parse

I have a website that currently displays a table filled with rows of data. Each row has been populated by using a parser that parses a text document. So Row 1 corresponds to textfile1, row 2 corresponds to textfile2 and so on. In the table, I want to be able to click on one of the values in a row. Then I want a window to popup with the original text file, and I want the clicked value to be highlighted in yellow. Note: It is possible that the same value might be in the table more than once. Therefore, a simple text search wouldn't work. The textfiles are fairly complicated but the parser already has found each value so there is a clear pattern to the information. Ideally, this would be coded in python / javascript. Please let me know if you can help