Extract comments from Acrobat PDF

extractComments.js

// Get all annotations in current document
var annots = this.getAnnots();

// Assemble them into a Tab-delimited string (remove linebreaks in comments, too)
var cMyC = "Comment\tPage";
for ( var i=0; i<annots.length; i++ )
 cMyC += ("\n"+annots[i].contents.replace(/(\r\n|\n|\r)/gm,"")+ "\t" + annots[i].page);
 
// Export them to MS Excel (opens the data there)
this.createDataObject({cName: "myCommentList.xls", cValue: cMyC});
this.exportDataObject({cName: "myCommentList.xls", nLaunch: 1});

Correctly cMyC += ("\n"+annots[i].contents.replace(/(\r\n|\n|\r)/gm,"")+ "\t" + (annots[i].page+1));