Develop Reference

How to send data from android app to my local site?

I have a local site like no server no nothing just the html, css, javascript files and i need to send data from an app in my phone created with android studio and display it on the site.I read that you can have a webserver and send data with the android/java tcp client to it but i cant find how to do it.So how can i approach this?

This is possible using server-side programming languages.
You can receive data using Api and display it on your web pages after saving it in the database.
To start, I suggest learning Php - Mysql , it's easier to understand and easier to implement

you can send data from your android mobile to the server by using API such as REST and SOAP but you have to any of the server-side scripting languages like node PHP etc.. Please refer the tutorial point to get better ideas
https://www.tutorialspoint.com/android/android_php_mysql.htm

Can I create a directory in client PC?

I have multiple questions
Can we create a directory in client machine ?
Can we check the running browser's default download path?
My requirement is that the user will download a BLOB data from my DB that time I want to create a folder in client machine and use that folder to save the blob data.
Can this be done using javascript,jquery,ajax,php,angularjs ?

You can't create a folder in client PC using JS.(don't even bother looking with HTML and CSS)
The best way you could accomplish something as you describe is to give a .zip to your client, so while extracting it, it creates his own container (the folder). But you must be sure that the people who intend using your web application knows how a .zip works.

Using PHP you can't do anything in the client PC. PHP is a server side programming language. So, it is running only in the server. When you make any request to the server then only PHP performs. In the browser end or client side only HTML, CSS and JS works.

Is it Possible to Connect Arduino through the EthernetShield to Read a Text File?

I'm new to Arduino and am trying to connect it to the internet using an EthernetShield. Before I buy the EthernetShield, I want to make sure I will be able to execute the necessary steps with it. Is it possible to use Javascript to write to a text file stored on the server (containing binary data), connect to said server/file address with Arduino, and then use Text Finder (Arduino's) to read the file's binary data and perform the necessary commands? If so, what are the steps (if it diverges from this basic outline)?
It seems fairly straight forward, but through my own research, I am unsure if text files can be written and stored in that fashion, and if the Arduino can read this file type. I'm also aware that the conventional way entails PHP and mySQL, both of which I am fairly unfamiliar with.
Thanks!

Arduino can read text file. I suggest you use XMl or json instead of text file.
I am sharing a link of code for my final year btech project "Controlling devices using internet".
(ofcourse this can be done easily by using arduino+ethernet as server but the problem with this is you need port forward the router in order to access server from outside the local network Port forwarding is little risk as per security aspects.)
I used apache server (for testing I installed in my laptop, later I used hosting sites) and Arduino+Ethernet Shield as client. Arduino sends HTTP request to server for XML file after getting, it parses the XMl and control the devices. I used PHP for creating UI and updating XML file....
I hope this may be useful
https://drive.google.com/folderview?id=0BxWdBbr_6RYkSXVwcGxOa3pxTDA&usp=sharing

connecting access 2007 db using js in html5 page

I am developing an web page (html5) for my graduation project. In the web page the user would provide "body type" and based on the input various garments's images would be pulled from database and displayed on the page.
I am not a technical student so failing in my database connection efforts.
I have index.html page, a .mdb db (ms access 2007) and using js to connect to the .mdb. I also installed the "Microsoft Access Database Engine 2010 Redistributable". Then too failing.
Kindly mention what I am missing.

HTML pages are mostly accessed via a Server (IIS, Apache,..) and the data work is done by the server, on the server (AKA ServerSide programming)
So first consider if your project is intended to be accessed this way or only locally / standalone to your very computer.
If you only want a local page, there might be a solution here : http://accessdb.sourceforge.net/
But I bet it only works on IE through ActiveX
Read this : Read and write to an access database using Javascript
Also : why MSaccess ? If you really try to manipulate data locally using JS, try SQLite, there should be many library for JS like this one : https://github.com/lovasoa/sql.js
or why not... the HTML5 webstorage objects, that could be pushed far
http://www.w3schools.com/html/html5_webstorage.asp

I think you have got it all wrong! The short answer is you can not. And that is because your design is wrong. You can not* directly connect form html5 / javascript to a database.
Back to the basics.
You will need server side scripting to read the database content and expose them to the client (javascript) or to embed directly the result to html5 (while server is building the page).
You need to take a look to the following technologies
java / Jsp
c# / aspx
Those will help you to read the db file on the server side. Then as I said you will need to find a way to expose that information to your web page. As a side note, those are not the only server side scripting technologies, but are the one (IMHO) the can read an access file.
So look into that direction you will find a lot of resources to help you.
*The truth is that you can, but this can be considered an 'advance' issue.

Upload files from mobile on server using jquery

I have a mobile application which needs the user to attach some files from his mobile and upload it on the server.
Is there a way to upload files on the server from mobile using JQUERY/JAVASCRIPT ?
I found many doin it with PHP/ASP.NET-c#...but my need is HTML with JAVASCRIPT/JQUERY...!!
FURTHER INFO ON MY APP (Kindly neglect it if not needed):
I have my front-end in HTML/CSS..I have a WCF service running on my server that does the communication with the database..I use the WCF service by making ajax calls from my client side..
I achieved all the other operations such as insert/delete/update/retrieve data from DB using these services only..
I was wondering if there is any possibility to do the "upload files on the server" task also using these webservices...but didnt get any idea about it !!!
Here is another question exactly precise to my need !! File upload service using WCF along with jquery(AJAX) and html client
Sorry if i m wrong anywhere..This stuff is totally new to me and so i need all your guidance..

To save an uploaded file, you need an server side script (PHP, ASP e.g.) to move the uploaded file from the servers tmp directory, to your desired location.
Maybe can you edit your serves configuration so it writes the uploaded files automatic to your desired location, but I wouldn't suggest that due to security reasons.

Is this a native application? If it's just a website then you'll struggle as safari on iPhone doesn't support file uploads. If it's a phonegap application you could maybe hook into the file API...

Ok some of the points worth mentioning.
When you wanted to upload file to server you have to POST file with multipart content type of the form. For this you might need to write WCF service on server end accordingly. I am not having good experience of WCF but this post should help may be
<form method="POST" enctype="multipart/form-data" >
HTML5 file API and XHR Level 2 specification you can upload files to server. As they are new features and JS and DOM involved yes you can consum and do it in JQuery as well as long as your browser is supporting them.
With these things i am not sure if there should be any issue while uploading files to the server.