function listFilesInFolder(folderName) {

var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Get_Link');
//sheet.appendRow(["File Name","URL"]);

var folderID = [];
folderID = SpreadsheetApp.getActive()
                         .getRange('Folder_ID!A2:B')
                         .getValues()
                         .reduce(function(p, c) {
                           if (c[0] !== '' && c[1] !== '') {
                                p.push( DriveApp.getFolderById(c[1]).getFiles() );
                                return p; }
                          }, []);

//var searchTerm = Browser.inputBox("Masukkan Folder ID:");
//var folder = DriveApp.getFolderById(searchTerm);
//var contents = folder.getFiles();

var cnt = 0;
var file;

while (folderID.hasNext()) {
    var file = folderID.next();
    cnt++;

       data = [
            file.getName(),
            file.getUrl(),
        ];

        sheet.appendRow(data);
    };
};