Find and Replace Text with Multiple Rules (CSV upload)

This tool performs multiple find-and-replace operations at once on a piece of text that you supply. Create a CSV file with the strings you want to replace in the first column, and the substitution text in the second column:

Enter text here:

Select CSV file:

Substitute Text

Notes:

• Case-sensitive matching. So any rules matching "apple" will not apply to the string "Apple".
• This tool only works on exact search and replace values. Regex not supported. You can "view source" and adapt the code to your needs. I think you'll need to change the line
  targettext = targettext.replaceAll(data[currentrule][0], data[currentrule][1]);
  to something like
  var regEx = new RegExp(data[currentrule][0]);
  targettext = targettext.replaceAll(regEx, data[currentrule][1]);
  but it won't do "Capturing Groups" logic.
• Think about how your search-and-replace rules will interact with each other. Rule #5 will not be operating on your original text - it will operate on the result of replacement rules #1, #2, #3 and #4...
  
• Successfully tested on a 1.5mb text file, with a set of 15,235 replacement rules. I built this tool because this other tool from JoydeepDeb could not handle an operation this size.
• This code runs in your browser - the text you enter and the .csv file never leave your computer. I do not have access to them.
• Big "thank you" to Vanessa Fotso who's code & tutorial for handling CSV files in JavaScript I used for this project.
• Also thank you to PictureElement on StackOverflow, who's answer about updating the DOM inside JavaScript loops was very helpful. That progress bar took longer than the substitution code...