I would like to delete all pages that contain a certain phrase utilizing a Javascript Action

I've been playing around with a couple different variations of code, but nothing has worked.  I've used the following to pull the pages with a certain word, but I think it would be better to delete pages with a phrase.  Any suggestion?

var pageArray = [];

var stringToSearchFor = "Weight";

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,

nEnd: pageArray,

} );

}

  // remove the first page

  d.deletePages(0);

}