Develop Reference

what is this type of "var _0xc3e1=..." script in javascript tag?

what is this type of javascript in this website http://e-pnrstatus.com/
which look like below
var _0xc3e1 = ["\x73\x68\x6F\x77", "\x74\x6F\x67\x67\x6C\x65", "\x63\x6C\x61\x73\x73\x4C\x69\x73\x74", "\x6D\x79\x44\x72\x6F\x70\x64\x6F\x77\x6E", "\x67\x65\x74\x45\x6C\x65\x6D\x65\x6E\x74\x42\x79\x49\x64", "\x6F\x6E\x63\x6C\x69\x63\x6B", "\x2E\x64\x72\x6F\x70\x62\x74\x6E", "\x6D\x61\x74\x63\x68\x65\x73", "\x74\x61\x72\x67\x65\x74", "\x64\x72\x6F\x70\x64\x6F\x77\x6E\x2D\x63\x6F\x6E\x74\x65\x6E\x74", "\x67\x65\x74\x45\x6C\x65\x6D\x65\x6E\x74\x73\x42\x79\x43\x6C\x61\x73\x73\x4E\x61\x6D\x65", "\x6C\x65\x6E\x67\x74\x68", "\x63\x6F\x6E\x74\x61\x69\x6E\x73", "\x72\x65\x6D\x6F\x76\x65"];
function myFunction() {
document[_0xc3e1[4]](_0xc3e1[3])[_0xc3e1[2]][_0xc3e1[1]](_0xc3e1[0])
}
window[_0xc3e1[5]] = function(_0xd9a9x2) {
if (!_0xd9a9x2[_0xc3e1[8]][_0xc3e1[7]](_0xc3e1[6])) {
var _0xd9a9x3 = document[_0xc3e1[10]](_0xc3e1[9]);
var _0xd9a9x4;
for (_0xd9a9x4 = 0; _0xd9a9x4 < _0xd9a9x3[_0xc3e1[11]]; _0xd9a9x4++) {
var _0xd9a9x5 = _0xd9a9x3[_0xd9a9x4];
if (_0xd9a9x5[_0xc3e1[2]][_0xc3e1[12]](_0xc3e1[0])) {
_0xd9a9x5[_0xc3e1[2]][_0xc3e1[13]](_0xc3e1[0])
}
}
}
}

It's obfuscated code. Developers use it trying to prevent others from reading and understanding their code, because JavaScript is always readable in uncompiled form and thus this is the best way to keep your algorithms private and still use them.

Google Script not Appending Spreadsheet

I'm trying to write a little script to make my coworkers and mine lives easier. I am trying to append lines to a spreadsheet based on information entered into a custom form. The code posted below just the doPost block which should be appending the google spreadsheet.
function doPost(form) {
var PN = form.PartNumber;
var REV = form.Revision;
var DATE = form.RevisionDate;
var DESC = form.Description;
var NOTE = form.PartNotes;
var URL = form.myFile.getURL();
var ss = SpreadsheetApp.openById("ID HERE"); // removed ID for sake of safety (let me be paranoid)
var sheet = ss.getSheetName('Uploads');
sheet.appendRow([PN,REV,DATE,DESC,NOTE,URL]);
}
I am unsure why it isn't writing to the spreadsheet but it isn't throwing me any errors. If you can offer any insight as to what is wrong I would greatly appreciate it; there are many guides online but most seem to be based on deprecated functions/code/etc.
Thanks for your time.

Instead of using doPost, set up a "On form submit" trigger.
You need to get the namedValues to be able to pull specific values and take the first output.
Also, it should be "getSheetByName('Uploads')" .
As pointed out in the previous answer, it is unclear what you are trying to achieve by "form.myFile.getURL();" If you want to get the form url you might as well create it as a string, as it always stays the same.
Here is a working example of your code:
function doPost(form) {
var formResponses = form.namedValues;
var PN = formResponses.PartNumber[0];
var REV = formResponses.Revision[0];
var DATE = formResponses.RevisionDate[0];
var DESC = formResponses.Description[0];
var NOTE = formResponses.PartNotes[0];
//var URL = form.myFile.getURL(); //Not sure what you are tyring to get here as form URL will always be the same.
var URL = "Your form's url"; //You can put the form url in here so it will be pushed in to every row.
var ss = SpreadsheetApp.openById("ID HERE"); // removed ID for sake of safety (let me be paranoid)
var sheet = ss.getSheetByName('Uploads');
sheet.appendRow([PN,REV,DATE,DESC,NOTE,URL]);
}

The form fields are nested in a "parameter" property in the doPost parameter.
So, you should access them using:
function doPost(form) {
var actualForm = form.parameter;
var PN = actualForm.PartNumber;
//etc
To double check all parameters your receiving and their names, you could append to your sheet everything stringfied, like this:
sheet.appendRow([JSON.stringify(form)]);
--edit
This form.myFile.getURL() also looks odd. I guess another good debugging trick you could do is to wrap everything in a try-catch and email yourself any errors you get. For example:
function doPost(form) {
try {
//all your code
} catch(err) {
MailApp.sendMail('yourself#etc', 'doPost error', err+'\n\n'+JSON.stringify(form));
}
}

On form submit
onFormSubmit works. "doPost" looks wrong.
Simple example:
function Initialize() {
var triggers = ScriptApp.getProjectTriggers();
for(var i in triggers) {
ScriptApp.deleteTrigger(triggers[i]);
}
ScriptApp.newTrigger("SendGoogleForm")
.forSpreadsheet(SpreadsheetApp.getActiveSpreadsheet())
.onFormSubmit()
.create();
}
function SendGoogleForm(e)
{
try
{
Full example - Scroll down to the code http://www.labnol.org/internet/google-docs-email-form/20884/ (Note: example sends email)
Trigger docs: https://developers.google.com/apps-script/guides/triggers/events
Notes: I think the problem is doPost, Does it work with google Forms? Never seen it used with google forms.

First and foremost, thank you everyone who has responded with information thus far. None of the solutions posted here worked for my particular implementation (my implementation is probably to blame, it is very crude), but they definitely set me down the path to a working version of my form which we now lightly use. I have posted some of the code below:
function sheetFill(form, link) {
try {
var formResponses = form.namedValues;
var toForm = [0,0,0,0,0,0,0];
for (i=0;i < form.PartNumber.length;i++){
toForm[0] = toForm[0]+form.PartNumber[i];
}
... (several for loops later)
var d = new Date();
var ss = SpreadsheetApp.openById("IDHERE");
var sheet = ss.getCurrentSheet;
ss.appendRow([toForm[0], toForm[1], toForm[2], toForm[3], toForm[4], toForm[5], toForm[6], link, d]);
} catch(err) {
MailApp.sendEmail('EMAIL', 'doPost error', err+'\n\n'+JSON.stringify(form));
}
}
It is not very versatile or robust and isn't elegant, but it is a starting point.

Looping alternative in Javascript/jQuery with AJAX

I have the following piece of code of which I'm worried for performance wise. I'm not sure if it's a good idea to loop through $.ajax just like that. Is there a more efficient way to loop through an array in jQuery ajax?
What this code is supposed to do:
This code is supposed to take a bunch of URLs through a text area and if the URLs are broken into new lines, then each URL will be part of the urls_ary array. Otherwise, if there is not line break and the entered text area value is an URL, the value will be stored in single_url.
Now, I need to send these URLs (or URL) to my server-side script (PHP) and process those links. However, if the array urls_ary is the one to be sending data through AJAX, I'd need to send each URL individually, causing me to run the $.ajax call inside a for loop, which I think is inefficient.
var char_start = 10;
var index = 0;
var urls = $('textarea.remote-area');
var val_ary = [];
var urls_ary = [];
var single_url = '';
urls.keyup(function(){
if (urls.val().length >= char_start)
{
var has_lbrs = /\r|\n/i.test(urls.val());
if (has_lbrs) {
val_ary = urls.val().split('\n');
for (var i = 0; i < val_ary.length; i++)
{
if (!validate_url(val_ary[i]))
{
continue;
}
urls_ary[i] = val_ary[i];
}
}
else
{
if (validate_url(urls.val()))
{
single_url = urls.val();
}
}
if (urls_ary.length > 0)
{
for (var i = 0; i < urls_ary.length; i++)
{
$.ajax({
// do AJAX here.
});
}
}
else
{
$.ajax({
// do AJAX here.
});
}
}
});
function validate_url(url)
{
if(/^([a-z]([a-z]|\d|\+|-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*#)?((\[(|(v[\da-f]{1,}\.(([a-z]|\d|-|\.|_|~)|[!\$&'\(\)\*\+,;=]|:)+))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=])*)(:\d*)?)(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)*)*|(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)*)*)?)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)*)*)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)){0})(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|#)|\/|\?)*)?$/i.test(url)){
return true;
}
return false;
}

Doing the $.ajax calls in a loop isn't the inefficient part. The AJAX requests will queue up, waiting for an available connection (only a certain number of requests per connection are allowed at a time). What's inefficient is the fact that you're doing multiple AJAX calls. Ideally, you could add the ability on the server to process multiple URLs at a time, then post an array of URLs in your client code instead of doing multiple requests.
So basically, the only way to be more efficient is to change the server-side code, then rewriting the client code should be straightforward.

Downloading a file through web application [best practice]

I am new with web application development. I have a code that lets you download a file after passing a basic authentication. It is working so far but I am not sure if this is the correct solution in achieving this solution. Or is there a drawback using this solution?
The "download" processing is being handled on a javascript using this code.
function downloadFile() {
var s = queryString("fn");
var f = "/web/et/" + s;
if (s.length > 1) {
window.open(f, "Download");
}
}
function queryString(parameter) {
var loc = location.search.substring(1, location.search.length);
var param_value = false;
var params = loc.split("&");
for (i = 0; i < params.length; i++) {
param_name = params[i].substring(0, params[i].indexOf('='));
if (param_name == parameter) {
param_value = params[i].substring(params[i].indexOf('=') + 1)
}
}
if (param_value) {
return param_value;
}
else {
return ""; //Here determine return if no parameter is found
}
}
#EDIT:
Sorry if I forgot to include the question, my question is, Is there a drawback on using this kind of solution? (pertains to downloading a file using javascript). Or is there a better solution for downloading a file aside from using a javascript?

I would handle any authentication on the server side b/c it is too easy to manipulate the (plainly) visible JS source. Not sure if that helps.

Given a string representing an XML file, what's the easiest way to locate all namespace declarations with Javascript or jQuery?

I've got a webpage which reads an XML file and loads the contents into a div on the page. As a part of this process, I need to identify all of the namespace prefixes and corresponding URIs declared in that file. I'm using jQuery to get and load the file like this:
$.get(sourceURI, function (data) {
var nsList = getNamespaces(data);
var target = $('#my_div');
target.html(data);
});
where getNamespaces is a function taking the result of the get, and returning an object in the form:
object = {
prefix1: uri1, //e.g xmlns:foo="http://bar.com" -> { foo: "http://bar.com" }
prefix2: uri2,
....
prefixn: urin
}
I have a sinking feeling that the answer may be a regex, but obviously that requires me to write one, and suffer over-used adages about having two problems from my colleagues. Is there a better way, or if not could someone point me in the right direction in constructing a regex?
Thanks!

If your browser is XHTML-compliant, you can use its parsing facilities to iterate over the XML elements with jQuery instead of processing a raw string with regular expressions:
function getNamespaces(data)
{
var result = {};
$(data).each(function() {
recurseGetNamespaces(this, result);
});
return result;
}
function recurseGetNamespaces(element, result)
{
var attributes = element.attributes;
for (var i = 0; i < attributes.length; ++i) {
var attr = attributes[i];
if (attr.name.indexOf("xmlns:") == 0) {
var prefix = attr.name.substr(6);
if (!(prefix in result)) {
result[prefix] = attr.value;
}
}
}
$(element).children().each(function() {
recurseGetNamespaces(this, result);
});
}
You can find a fiddle demonstrating this method here. (Disclaimer: that fiddle uses JSON.stringify() to display the results, so that part of the code might not work with browsers other than Firefox).