Extracting Pages Based on Matching Strings in Acrobat Pro DC Java Script

// Iterates over all pages and find a given string and extracts all 
// pages on which that string is found to a new file.

var pageArray = [];

var stringToSearchFor = "Test";

for (var p = 0; p < this.numPages; p++) {
    // iterate over all words
    for (var n = 0; n < this.getPageNumWords(p); n++) {
        if (this.getPageNthWord(p, n) == stringToSearchFor) {
            pageArray.push(p);
            break;
        }
    }
}

if (pageArray.length > 0) {
    // extract all pages that contain the string into a new document
    var d = app.newDoc();    // this will add a blank page - we need to remove that once we are done
    for (var n = 0; n < pageArray.length; n++) {
        d.insertPages( {
            nPage: d.numPages-1,
            cPath: this.path,
            nStart: pageArray[n],
            nEnd: pageArray[n],
        } );
    }

    // remove the first page
    d.deletePages(0);
    
}