I am day 1 fresh using javascript and html. I am simply trying to extract text once a button is clicked and write out that text to an s3 bucket. I have an html file that contains the html and java script function that will extract the text. Now I just need to write that data to s3.
<html>
<body>
<center>
<label for="freeform">Please decribe what you would like photo-ai to create:</label>
<br>
<textarea id="freeform" name="freeform" rows="4" cols="50">
Enter text here...
</textarea>
<input type="button" value="Submit my Application!" onclick="formdata()" />
</center>
</body>
</html>
<script>
function formdata()
{
var free_text= document.getElementById("freeform").value;
}
</script>
I see stuff in Node.js but I am not sure the way I am doing here is possible. Basically I am lost and I am asking for guidance, thanks.
On day one you should definitely learn something else than using AWS S3 SDK to upload objects to S3 bucket, but here are the official SDK with some examples how to make it work:
https://docs.aws.amazon.com/sdk-for-javascript/v2/developer-guide/s3-examples.html
Related
I am wanting to save user input to a text file that will be stored in my local folder directory with filename as date-time(hh-mm-ss).txt So once the user clicks the "save: button, it'll save the contents to that date-time(hh-mm-ss).txt file
I am learning, so please show me with a little explanation, thank you
Current html:
<form>
Subject:
<input type="text" id="subject" size="20">
<br>
Description:
<textarea id="newDescription" rows="4" cols="50" required spellcheck="true"></textarea>
<br>
Tags:
<input type="text" id="tags" size="20">
<br>
<input type="button" value="Save"
onclick="addDescription(this.form);">
</form>
Current external JS:
// This function accepts user input.
function addDescription(form) {
document.getElementById("info").innerHTML =
form.elements["subject"].value + "<br>" +
form.elements["newDescription"].value + "<br>" +
form.elements["tags"].value + ".";
form.reset();
form.elements["subject"].value
form.elements["newDescription"].value
form.elements["tags"].value;
} // end addDescription
Also, if anyone has a better idea on how to make the appearance of the portion of the html look better on the webpage because as of now the label and text boxes look crushed together!
JavaScript on the client side (in the browser) can't read or write files (imagine how dangerous that would be?).
To write a file you'd need server side technology such as NodeJS (if you want to stick with JS). The client side will need to send the data to your backend (NodeJS).
Instead of giving you copy & paste code, I'll give you direction on how to approach the problem, and resources that will get you there:
Set up a backend with NodeJS. Easiest is to use Express:
https://expressjs.com/
To write files with your backend you can use plain NodeJS. Learn
how to do that here.
Build your form correctly by learning from boilerplate code. A good
framework for building out neat HTML and CSS might be Bootstrap,
or Tailwind.
Post the user's data to your NodeJS backend from your form using the
fetch API.
Am using D3.js to input a json file and graphically plot it.
Here's my js required:
function loadJSON(url) {
d3.json("url", function(data) {
dataProcessor(data);
});
}
Here's my html required:
<body>
<div><h1>Chart 101</h1></div>
<input id="source" type="file">
<button id="clickHere" onclick="loadJSON()">CLick here</button>
<script src="../js/d3.v3.min.js"></script>
<script src="../js/ChartFactory.js"></script>
</body>
Bascially d3.json requires the url of the file selected.
Check here
But since mozilla doesnt allow the path to be visible using the "inputId.value",i cant seem to move forward with this.
Is there any solution or work around for this?
It is not possible to get the file full path on client machine using browser and javascript.
you have to upload file to server using form and then get the file.
I trying to store CSV data to database using onclick function. Unfortunately, I am using php code inside javascript function which is not efficient enough. Therefore, I hope that I can get any suggest or solution to improve efficiency of my project by using javascript instead of php to store CSV data into database.
This is javascript with php code :
<script>
function storeQueEmail(){
<?php
$file = $_FILES[csv][tmp_name];
$handle = fopen($file,"r");
//loop through the csv file and insert into database
do {
if ($data[0]) {
$record['contact_first'] = $data[0];
$record['contact_last'] = $data[1];
$record['contact_email'] = $data[2];
$record['subject'] = $_REQUEST['subject'];
$record['message'] = $_REQUEST['message'];
$record['status'] = 0;
$oAdminEmail->insertQueEmail($record);
}
} while ($data = fgetcsv($handle,1000,",","'"));
?>
}
</script>
This is HTML code :
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Import a CSV File with PHP & MySQL</title>
</head>
<body>
<form action="" method="post" enctype="multipart/form-data" name="form1" id="form1" >
Subject : <br/>
<input type="text" name="subject" id="subject" required/> <br/>
Choose your upload type: <br />
<input name="csv" type="file" id="csv" accept=".csv" required/> <br/>
Content : <br/>
<textarea name="message" cols="50" rows="10" required></textarea><br/>
<input type="submit" name="submit" value="Submit" onclick="storeQueEmail()"/>
</form>
</body>
</html>
what are you trying to do there? I think you are speaking about a PHP in
HTML document. So your PHP code inside your function is interpreted on server. As your PHP code has no output your Javascript function is simply empty. Thus as you have registered your Javascript function as onclick handler just nothing would happen.
Remember that standard Javascript code is interpreted on Client (that means in browser) though you PHP code is interpreted on server. As mentioned in the comments above it is possible to use an AJAX or POST/GET - Request to send data to your server and then write it to your DB or file etc.
Another way to do this directly with Javascript is Node.js - serverside Javascript that is able to write to your Database like PHP can do.
The easiest way for you to do it with your HTML code you presented above is to fill in your
action - attribute
in your
form tag
For example:
<form action="proccessData.php" ...>
...
</form>
Don't forget to remove your onclick - attribute inside form's submit input field.
If you know press your submit button your entire form and its content will be send to http://www.xyz.de/proccessData.php. Inside that file you can work with your form data: In your case two text fields and one file upload field. As you may know you could get to the content of text input field send via post via:
$_POST['<name of field>']
To get your uploaded file and proccess it you could use PHP's global
$_FILE[] - Array
Just refer to PHP's manual on php.net or some other online documentation. There's pretty much to find on the web.
I just give you a helpful link to php.net on how to handle file uploads in a correct and therefor secure manner: http://us2.php.net/manual/en/features.file-upload.php
Once you have read your uploaded file via PHP's global $_FILE[] - array just proccess that file via fgetcsv in your proccessData.php and write it line for line to your database.
Hope that helps! It is really not that hard :)
I'm trying to create a sample epub file that I can read in iBooks that will contain interactive content that iBooks will access via localStorage. I am able to get the localStorage piece working on the browser aok in chrome and firefox (not IE).
I noted that the localStorage javascript bit does not work when the files have *.xhtml extensions, only *.html extensions.
I am able to zip up the html, opf and ncx and get an epub that I can read in digital editions and only throw epubcheck errors related to javascript stuff.
I first tried importing this to iBooks, and I could read it aok, but the form was not interactive. Then I googled and found a post saying that it need to to be in an iFrame, which I did. I was then able to enter text into the form, but the local storage bit did not work.
Here are the 2 relevant html files:
<?xml version="1.0"?>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
</head>
<body onLoad="writeStoredData( 'storedName' );" >
<div epub:type="chapter">
<h1>An HTML5 Ebook Sample</h1>
<p> A simple html5 form that uses local storage to hold user input info</p>
<ul><li>Does a device retain the info when the user moves from page to page? </li>
<li>When the device is turned off and on?</li>
</ul>
<p>In this simple form, the body has an onLoad attribute that calls a function to load the "name" from local storage. When the user enters input from a form the value is updated. When the user closes the page and opens it again the value is still there.</p>
<br/>
<div class="formContainer">
<iframe class="content" src="form.html"></iframe>
</div>
<div id="storedName"></div>
<p>Go to page 2
</p>
</div>
<script>
function writeStoredData( id ){
var storedNameDiv = document.getElementById(id);
storedNameDiv.innerHTML = "<p>The stored name is: <span class='selected'>" + localStorage.getItem('somename') + "</span></p>";
}
</script>
</body>
</html>
and the form: (this has the function that writes to localStorage)
<?xml version="1.0"?>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<title>Epub3 Test Input Form</title>
</head><body>
<form>
Please enter your name: <input type="text" id="nameInput"/>
<input type="submit" value="enter" onClick="writeLocal();" onSubmit="window.location.reload()"/>
</form>
<script>
function writeLocal(){
var submittedName = document.getElementById('nameInput').value;
// calling it 'somename' to indicate user defined key
localStorage.setItem('somename', submittedName);
writeStoredData( 'storedName' );
}
function writeStoredData( id ){
var storedNameDiv = document.getElementById(id);
storedNameDiv.innerHTML = "<p>The stored name is: <span class='selected'>" + localStorage.getItem('somename') + "</span></p>";
}
</script>
</body></html>
and here is the manifest from the content.opf file:
<manifest>
<item id="js" href="javascript/ebook-test.js" media-type="text/javascript"/>
<item href="form.html" id="form1" media-type="application/xhtml+xml" properties="scripted"/>
<item href="ebook-sample.html" id="page1" media-type="application/xhtml+xml" properties="scripted"/>
<item href="ebook-sample-pg2.html" id="page2" media-type="application/xhtml+xml" properties="scripted"/>
<item href="toc.ncx" id="ncx" media-type="application/x-dtbncx+xml"/>
<item id="toc" properties="nav" href="toc.xhtml" media-type="application/xhtml+xml"/>
</manifest>
The bit written by javascript never appears at all. My next step is to try to create a file in iBooks Author, but was hoping to be able to do this with epub. I know that iBooks should be able to do this stuff, as most of the googling I did brought up tutorials for iBooks Author.
Also, I tried various things with the javascript; most of the examples I saw had the code in a tag at the bottom of the html file, but I tried in a separate *.js file, and in the head tag, made no difference.
Any help greatly appreciated.
bp
localStorage has been disabled in iBooks by Apple, hence you cannot hope to have your code running from within an EPUB rendered by it.
You can use contenteditable it will be work. Remove the input tag
I need to send a text file to server and get it saved. how can i do it using javascript???
There are all sorts of security issues surrounding this. Would you be happy to visit a website that would upload a file from your machine to the server?
For a generic website, where users are likely to have their permissions set to deny this sort of access it isn't possible.
If by chance, you are looking to do this for an application where you have control over the security settings for its users, and that you can guarantee its Windows and IE, then it is possible by reading the file and passing the details by posting to the server. See the following link : http://www.javascripter.net/faq/reading2.htm
However when you move away from IE or Windows, then you are going to struggle.
using ajax of course.
have a file on the server, PHP or ASP - depending on what your internet server is.
this file will accept the text file (data and name), and should also check for size and if this file already exists or not, and if all is ok- it will save it, and return a string "OK"
on the client, javascript side, just send the information to the server using ajax, or HTTPREQUST object - there's plentty of documentation for that around. and if you get back a response of "OK" then you know that it sent well.
even better: don't use HTTPREQUEST, but do dynmaic script tag insertion - where the source attribute of the script you're appending is that file on the server like:
var a = document.createElement('script');
a.type = 'text/javascript';
a.src = "http://server/serverFile.PHP?filename=XXX&data=LONG STRING OF DATA REPRESTING THE DATA TO BE SAVED PROBABLY LESS THAN 2K IN SIZE AND ALSO YOU SHOULD ESCAPE OR ATLEAST URIENCODE IT";
document.body.appendChild(a);
and on the server file, serverFILE.PHP:
<?php
// some code to save the request variable [data].
// if all is ok:
alert("ok")
// or:
result = "ok"
?>
get it?
note: you'll probably have a limit of less than 2K on the file size.
Javascript is a front-end language. You may use php or any server side language.
You can create an Ajax equiv function make an iframe with width and height=0px then make it the target of the form with the file upload input and process it with the action PHP
<form action="upload.php" target="target" method="post"
name="uploadform" id="uploadform" enctype="multipart/form-data">
<label for="input_file_upload">Upload:</label>
<input onchange="document.uploadform.submit();" size="80"
type="file" name="file_upload[]" id="file_upload"
multiple="multiple" />
<input type="hidden" name="fileUpload" value="upload" />
<input type="button" value="Upload" />
</form>
<iframe id="target" name="target" style="width: 0px; height: 0px;">
</iframe>