JS to execute grep

Question

how to write JS to execute the grep in InDesign? e.g grep1 then grep2 then grep3?
Thanks in advance.

Answer 1

Here is an approach that I use in my Protect local styling script:
Create an array of arrays -- each element of the array is a two elements array: [ find what, change to ].
myGrpReplace =     [
            ["[~m~>~f~|~S~s~<~/~.~3~4~% ]{2,}", " "], // Multiple Space to Single Space
            ["--", "~_"], // Dash Dash to Em-dash
            ["~b~b+", "\\r"] // Multiple Return to Single Return
Then process the array in a function:
function replaceGrep() {
     app.findGrepPreferences = NothingEnum.nothing;
     app.changeGrepPreferences = NothingEnum.nothing;
     for (i = 0; i <  myGrpReplace.length; i++) {
          var myCurArray = myGrpReplace[i];
          app.findGrepPreferences.findWhat = myCurArray[0];
          app.changeGrepPreferences.changeTo = myCurArray[1];
          myTextFrame.parentStory.changeGrep();
     app.findGrepPreferences = NothingEnum.nothing;
     app.changeGrepPreferences = NothingEnum.nothing;
replaceGrep(); // call function