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How to upload and GET the Items in the SharePoint Document Library from client side using REST API as a HOSTED APP?

Help me with the detailed code, Because am new to this environment. My need is, I need to upload a image into a SharePoint Document library from the client side using REST API and also I want to retrieve the item which is there in the document Library and append it into a page. I trying this one as a SharePoint Hosted App.
I'm Using SharePoint Online;

We can use REST API an jQuery in SharePoint hosted add-in to achieve it, the following code for your reference.
'use strict';
var appWebUrl, hostWebUrl;
jQuery(document).ready(function () {
// Check for FileReader API (HTML5) support.
if (!window.FileReader) {
alert('This browser does not support the FileReader API.');
}
// Get the add-in web and host web URLs.
appWebUrl = decodeURIComponent(getQueryStringParameter("SPAppWebUrl"));
hostWebUrl = decodeURIComponent(getQueryStringParameter("SPHostUrl"));
});
// Upload the file.
// You can upload files up to 2 GB with the REST API.
function uploadFile() {
// Define the folder path for this example.
var serverRelativeUrlToFolder = '/shared documents';
// Get test values from the file input and text input page controls.
// The display name must be unique every time you run the example.
var fileInput = jQuery('#getFile');
var newName = jQuery('#displayName').val();
// Initiate method calls using jQuery promises.
// Get the local file as an array buffer.
var getFile = getFileBuffer();
getFile.done(function (arrayBuffer) {
// Add the file to the SharePoint folder.
var addFile = addFileToFolder(arrayBuffer);
addFile.done(function (file, status, xhr) {
// Get the list item that corresponds to the uploaded file.
var getItem = getListItem(file.d.ListItemAllFields.__deferred.uri);
getItem.done(function (listItem, status, xhr) {
// Change the display name and title of the list item.
var changeItem = updateListItem(listItem.d.__metadata);
changeItem.done(function (data, status, xhr) {
alert('file uploaded and updated');
});
changeItem.fail(onError);
});
getItem.fail(onError);
});
addFile.fail(onError);
});
getFile.fail(onError);
// Get the local file as an array buffer.
function getFileBuffer() {
var deferred = jQuery.Deferred();
var reader = new FileReader();
reader.onloadend = function (e) {
deferred.resolve(e.target.result);
}
reader.onerror = function (e) {
deferred.reject(e.target.error);
}
reader.readAsArrayBuffer(fileInput[0].files[0]);
return deferred.promise();
}
// Add the file to the file collection in the Shared Documents folder.
function addFileToFolder(arrayBuffer) {
// Get the file name from the file input control on the page.
var parts = fileInput[0].value.split('\\');
var fileName = parts[parts.length - 1];
// Construct the endpoint.
var fileCollectionEndpoint = String.format(
"{0}/_api/sp.appcontextsite(#target)/web/getfolderbyserverrelativeurl('{1}')/files" +
"/add(overwrite=true, url='{2}')?#target='{3}'",
appWebUrl, serverRelativeUrlToFolder, fileName, hostWebUrl);
// Send the request and return the response.
// This call returns the SharePoint file.
return jQuery.ajax({
url: fileCollectionEndpoint,
type: "POST",
data: arrayBuffer,
processData: false,
headers: {
"accept": "application/json;odata=verbose",
"X-RequestDigest": jQuery("#__REQUESTDIGEST").val(),
"content-length": arrayBuffer.byteLength
}
});
}
// Get the list item that corresponds to the file by calling the file's ListItemAllFields property.
function getListItem(fileListItemUri) {
// Construct the endpoint.
// The list item URI uses the host web, but the cross-domain call is sent to the
// add-in web and specifies the host web as the context site.
fileListItemUri = fileListItemUri.replace(hostWebUrl, '{0}');
fileListItemUri = fileListItemUri.replace('_api/Web', '_api/sp.appcontextsite(#target)/web');
var listItemAllFieldsEndpoint = String.format(fileListItemUri + "?#target='{1}'",
appWebUrl, hostWebUrl);
// Send the request and return the response.
return jQuery.ajax({
url: listItemAllFieldsEndpoint,
type: "GET",
headers: { "accept": "application/json;odata=verbose" }
});
}
// Change the display name and title of the list item.
function updateListItem(itemMetadata) {
// Construct the endpoint.
// Specify the host web as the context site.
var listItemUri = itemMetadata.uri.replace('_api/Web', '_api/sp.appcontextsite(#target)/web');
var listItemEndpoint = String.format(listItemUri + "?#target='{0}'", hostWebUrl);
// Define the list item changes. Use the FileLeafRef property to change the display name.
// For simplicity, also use the name as the title.
// The example gets the list item type from the item's metadata, but you can also get it from the
// ListItemEntityTypeFullName property of the list.
var body = String.format("{{'__metadata':{{'type':'{0}'}},'FileLeafRef':'{1}','Title':'{2}'}}",
itemMetadata.type, newName, newName);
// Send the request and return the promise.
// This call does not return response content from the server.
return jQuery.ajax({
url: listItemEndpoint,
type: "POST",
data: body,
headers: {
"X-RequestDigest": jQuery("#__REQUESTDIGEST").val(),
"content-type": "application/json;odata=verbose",
"content-length": body.length,
"IF-MATCH": itemMetadata.etag,
"X-HTTP-Method": "MERGE"
}
});
}
}
// Display error messages.
function onError(error) {
alert(error.responseText);
}
// Get parameters from the query string.
// For production purposes you may want to use a library to handle the query string.
function getQueryStringParameter(paramToRetrieve) {
var params = document.URL.split("?")[1].split("&");
for (var i = 0; i < params.length; i = i + 1) {
var singleParam = params[i].split("=");
if (singleParam[0] == paramToRetrieve) return singleParam[1];
}
}
Refer to: Upload a file by using the REST API and jQuery

Save 1st page of a PDF file using JavaScript

I need to extract 1st page of an uploaded PDF file(in SharePoint Online) & save it as a separate PDF file using JavaScript.
After some searching I found this. But I'm not able to understand how it works.
Please help.

As requested in the comment in a previous answer I am posting sample code to just get the first page in its original format, so not as a bitmap.
This uses a third party REST service that can PDF Convert, Merge, Split, Watermark, Secure and OCR files. As it is REST based, it supports loads of languages, JavaScript being one of them.
What follows is a self-contained HTML page that does not require any additional server side logic on your part. It allows a PDF file to be uploaded, splits up the PDF into individual pages and discards them all except for the first one. There are other ways to achieve the same using this service, but this is the easiest one that came to mind.
You need to create an account to get the API key, which you then need to insert in the code.
Quite a bit of the code below deals with the UI and pushing the generated PDF to the browser. Naturally you can shorten it significantly by taking all that code out.
<!DOCTYPE html>
<html>
<head>
<title>Muhimbi API - Split action</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script type="text/javascript">
// ** Specify the API key associated with your subscription.
var api_key = '';
// ** For IE compatibility*
// ** IE does not support 'readAsBinaryString' function for the FileReader object. Create a substitute function using 'readAsArrayBuffer' function.
if (FileReader.prototype.readAsBinaryString === undefined) {
FileReader.prototype.readAsBinaryString = function (file_content) {
var binary_string = "";
var thiswindow = this;
var reader = new FileReader();
reader.onload = function (e) {
var bytes = new Uint8Array(reader.result);
var length = bytes.byteLength;
for (var i = 0; i < length; i++) {
binary_string += String.fromCharCode(bytes[i]);
}
thiswindow.content = binary_string;
$(thiswindow).trigger('onload');
}
reader.readAsArrayBuffer(file_content);
}
}
// ** For IE compatibility*
// ** Create a Blob object from the base64 encoded string.
function CreateBlob(base64string)
{
var file_bytes = atob(base64string);
var byte_numbers = new Array(file_bytes.length);
for (var i = 0; i < file_bytes.length; i++) {
byte_numbers[i] = file_bytes.charCodeAt(i);
}
var byte_array = new Uint8Array(byte_numbers);
var file_blob = new Blob([byte_array], {type: "application/pdf"});
return file_blob;
}
// ** Execute code when DOM is loaded in the browser.
$(document).ready(function ()
{
//** Make sure an api key has been entered.
if(api_key=='')
{
alert('Please update the sample code and enter the API Key that came with your subscription.');
}
// ** Attach a click event to the Convert button.
$('#btnConvert').click(function ()
{
// ** Proceed only when API Key is provided.
if(api_key=='')
return;
try
{
// ** Get the file object from the File control.
var source_file = document.getElementById('file_to_split').files[0];
//** Was a file uploaded?
if (source_file)
{
// ** Get the file name from the uploaded file.
var source_file_name = source_file.name;
var reader = new FileReader();
//** Read the file into base64 encoded string using FileReader object.
reader.onload = function(reader_event)
{
var binary_string;
if (!reader_event) {
// ** For IE.
binary_string = reader.content;
}
else {
// ** For other browsers.
binary_string = reader_event.target.result;
}
// ** Convert binary to base64 encoded string.
var source_file_content = btoa(binary_string);
if(source_file_content)
{
// ** We need to fill out the data for the conversion operation
var input_data = "{";
input_data += '"use_async_pattern": false';
input_data += ', "fail_on_error": false';
input_data += ', "split_parameter": 1';
input_data += ', "file_split_type": "ByNumberOfPages"';
input_data += ', "source_file_name": "' + source_file_name + '"'; // ** Always pass the name of the input file with the correct file extension.
input_data += ', "source_file_content": "' + source_file_content + '"'; // ** Pass the content of the uploaded file, making sure it is base64 encoded.
input_data += '}',
// ** Allow cross domain request
jQuery.support.cors = true;
// ** Make API Call.
$.ajax(
{
type: 'POST',
// ** Set the request header with API key and content type
beforeSend: function(request)
{
request.setRequestHeader("Content-Type", 'application/json');
request.setRequestHeader("api_key", api_key);
},
url: 'https://api.muhimbi.com/api/v1/operations/split_pdf',
data: input_data,
dataType: 'json',
// ** Carry out the conversion
success: function (data)
{
var result_code = "";
var result_details = "";
var processed_file_contents = "";
var base_file_name = "";
// ** Read response values.
$.each(data, function (key, value)
{
if (key == 'result_code')
{
result_code = value;
}
else if (key == 'result_details')
{
result_details = value;
}
else if (key == 'processed_file_contents')
{
processed_file_contents = value;
}
else if (key == 'base_file_name')
{
base_file_name = value;
}
});
// ** Show result code and details.
$("#spnResultCode").text(result_code);
$("#spnResultDetails").text(result_details);
if(result_code=="Success")
{
// ** Get first item in the array. This is the first page in the PDF
var processed_file_content = processed_file_contents[0];
// ** Convert to Blob.
var file_blob = CreateBlob(processed_file_content)
// ** Prompt user to save or open the converted file
if (window.navigator.msSaveBlob) {
// ** For IE.
window.navigator.msSaveOrOpenBlob(file_blob, base_file_name + "." + output_format);
}
else {
// ** For other browsers.
// ** Create temporary hyperlink to download content.
var download_link = window.document.createElement("a");
download_link.href = window.URL.createObjectURL(file_blob, { type: "application/octet-stream" });
download_link.download = base_file_name + ".pdf";
document.body.appendChild(download_link);
download_link.click();
document.body.removeChild(download_link);
}
}
},
error: function (msg, url, line)
{
console.log('error msg = ' + msg + ', url = ' + url + ', line = ' + line);
// ** Show the error
$("#spnResultCode").text("API call error.");
$("#spnResultDetails").text('error msg = ' + msg + ', url = ' + url + ', line = ' + line);
}
});
}
else
{
// ** Show the error
$("#spnResultCode").text("File read error.");
$("#spnResultDetails").text('Could not read file.');
}
};
reader.readAsBinaryString(source_file);
}
else
{
alert('Select file to convert.');
}
}
catch(err)
{
console.log(err.message);
// ** Show exception
$("#spnResultCode").text("Exception occurred.");
$("#spnResultDetails").text(err.message);
}
});
});
</script>
</head>
<body>
<div>
<form id="convert_form">
Select file: <input type="file" id="file_to_split" />
<br /><br />
<button id="btnConvert" type="button">Split PDF</button>
<br /><br />
Result_Code: <span id="spnResultCode"></span>
<br />
Result_Details: <span id="spnResultDetails"></span>
</form>
</div>
</body>
</html>
Big fat disclaimer, I worked on this service, so consider me biased. Having said that, it works well and could potentially solve your problem.

Finally found a solution.
First converting the uploaded PDF to image using PDF.JS, done some customization in the sample code.
Then saved the 1st page image as PDF using jsPDF.
The customized download code,
$("#download-image").on('click', function() {
var imgData = __CANVAS.toDataURL();
var doc = new jsPDF();
doc.addImage(imgData, 0, 0, 210, 300);
doc.save('page1.pdf');
});

Javascript Variables Not Globally Returning / Adding Together

I'm trying to add both Facebook and Twitter share counters together, however all my efforts have failed.
<script>
tweets = 0;
function getTwitterCount(url){
$.getJSON('http://urls.api.twitter.com/1/urls/count.json?url=' + url + '&callback=?', function(data){
tweets = data.count;
$('#twitterCount').html(tweets);
return true;
});
}
var urlBase='http://abcdfav4.com/About/KickStarterCampaign/Rewards/ThePeaceSensation.html';
getTwitterCount(urlBase);
$.ajax({
type: 'GET',
url: 'https://graph.facebook.com/http://abcdfav4.com/About/KickStarterCampaign/Rewards/ThePeaceSensation.html',
success: function(data) {
showCount(data);
}
});
var fbshares = 0;
function showCount(responseText) {
// Save the parsed JSON
var json = responseText;
// Check if the response contains a 'shares' property
// If it doesn't, we can just exit this function
if (!json.hasOwnProperty('shares'))
return;
// A shares property and value must exist, update
// the span element with the share count
fbshares = json.shares;
$('#fb-share-count').html(fbshares);
}
var TotalShares = tweets + fbshares;
$('#total-share-count').html(TotalShares);
</script>
I could really do with some outside insight as I've been working crazy to get this website up and running ASAP and I'm probably overlooking the most obvious of things...
Console Log Reads:
Uncaught ReferenceError: fbshares is not defined
sdk.js:64 Invalid App Id: Must be a number or numeric string representing the application id.
card.html?v=2:79 Uncaught ReferenceError: I18n is not defined
sdk.js:64 FB.getLoginStatus() called before calling FB.init().
However despite this message, the Facebook and Twitter counters are working 100%, I just cannot get them to add together.
Best Regards,
Tim

Here's a solution:
var tweets;
function getTwitterCount(url) {
$.getJSON('http://urls.api.twitter.com/1/urls/count.json?url=' + url + '&callback=?', function(data) {
tweets = data.count;
$('#twitterCount').html(tweets);
showTotal();
});
}
var urlBase = 'http://abcdfav4.com/About/KickStarterCampaign/Rewards/ThePeaceSensation.html';
getTwitterCount(urlBase);
$.ajax({
type: 'GET',
url: 'https://graph.facebook.com/http://abcdfav4.com/About/KickStarterCampaign/Rewards/ThePeaceSensation.html',
success: showCount
});
var fbshares;
function showCount(responseText) {
// Save the parsed JSON
var json = responseText;
// Check if the response contains a 'shares' property
// If it doesn't, we can just exit this function
if (!json.hasOwnProperty('shares'))
return;
// A shares property and value must exist, update
// the span element with the share count
fbshares = json.shares;
$('#fb-share-count').html(fbshares);
showTotal();
}
function showTotal() {
if (tweets !== undefined && fbshares !== undefined)
$('#total-share-count').html(tweets + fbshares);
}
Basically showTotal attempts to sum the two values after each callback. When both values are defined, it will place the sum into the HTML.

GiantBomb API Work

I have made an account and have my api key currently i just want a simple search box and button that when hit will list the game and the image of that game
Have linked the site info below
http://www.giantbomb.com/api/documentation
I want to run is and get the output using json and jquery any help welcome
This is a working search now some what does not allow the user to enter in a new value and there is a problem bring up the image
two main problems wont load the image just says undefined and cant figure out how to make it a full search only when he user enters a new title
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$.ajax({
url: "http://api.giantbomb.com/search/",
type: "get",
data: {api_key : "key here", query: "star trek", resources : "game", field_list : "name, resource_type, image", format : "jsonp", json_callback : "gamer" },
dataType: "jsonp"
});
});
function gamer(data) {
var table = '<table>';
$.each( data.results, function( key, value ) {
table += '<tr><td>' + value.image + '</td><td>' + value.name + '</td><td>' + value.resource_type + '</td></tr>';
});
table += '</table>';
$('#myelement').html(table);
}
</script>
</head>
<body>
<h1>Game Search</h1>
<input id="game" type="text" /><button id="search">Search</button>
<div id="myelement"></div>
</body>
</html>

Your working code as per standard of the giantbomb docs:
var apikey = "My key";
var baseUrl = "http://www.giantbomb.com/api";
// construct the uri with our apikey
var GamesSearchUrl = baseUrl + '/search/?api_key=' + apikey + '&format=json';
var query = "Batman";
$(document).ready(function() {
// send off the query
$.ajax({
url: GamesSearchUrl + '&query=' + encodeURI(query),
dataType: "json",
success: searchCallback
});
// callback for when we get back the results
function searchCallback(data) {
$('body').append('Found ' + data.total + ' results for ' + query);
var games = data.game;
$.each(games, function(index, game) {
$('body').append('<h1>' + game.name + '</h1>');
$('body').append('<p>' + game.description + '</p>');
$('body').append('<img src="' + game.posters.thumbnail + '" />');
});
}
});
http://jsfiddle.net/LGqD3/
GiantBomb Api example/explanation
First get your api key
Key: http://www.giantbomb.com/api/
Documentation: http://www.giantbomb.com/api/documentation
Your base url:
http://www.giantbomb.com/api/
Your url structure:
/RESOURCE?api_key=[YOUR_API_KEY]&format=json/FILTERS/FIELDS
/RESOURCE/ID example: /game/3030-38206/
The type of resource you which to return, in your case a search. Sometimes.. in case of a specific game you also want to pass in the ID under /ID (like in the example)
api_key
Your api key
You need this otherwise you cannot use the api :)
format
The format you which to output, in this case json.
FILTERS example: /search?limit=100
This manipulates the resourses output
See under the resources in the documentation for a what you can do.
FIELDS example: /search?field_list=description,
Which field to return, use this to "reduce the size of the response payload"
A game request for it's name & description would be:
http://www.giantbomb.com/api/game/3030-38206/?api_key=[YOUR-API-KEY]&format=json&field_list=name,description
A search request
Lets say we want to search for the game "Elder scroll online".
You would construct your url like this:
/search/?api_key=[YOUR-API-KEY]&format=json&query="elder scrolls online"&resources=game
To implement this in with $.ajax:
The ajax function
/*
* Send a get request to the Giant bomb api.
* #param string resource set the RESOURCE.
* #param object data specifiy any filters or fields.
* #param object callbacks specify any custom callbacks.
*/
function sendRequest(resource, data, callbacks) {
var baseURL = 'http://giantbomb.com/api';
var apiKey = '[YOUR-API-KEY]';
var format = 'json';
// make sure data is an empty object if its not defined.
data = data || {};
// Proccess the data, the ajax function escapes any characters like ,
// So we need to send the data with the "url:"
var str, tmpArray = [], filters;
$.each(data, function(key, value) {
str = key + '=' + value;
tmpArray.push(str);
});
// Create the filters if there were any, else it's an empty string.
filters = (tmpArray.length > 0) ? '&' + tmpArray.join('&') : '';
// Create the request url.
var requestURL = baseURL + resource + "?api_key=" + apiKey + "&format=" + format + filters;
// Set custom callbacks if there are any, otherwise use the default onces.
// Explanation: if callbacks.beforesend is passend in the argument callbacks, then use it.
// If not "||"" set an default function.
var callbacks = callbacks || {};
callbacks.beforeSend = callbacks.beforeSend || function(response) {};
callbacks.success = callbacks.success || function(response) {};
callbacks.error = callbacks.error || function(response) {};
callbacks.complete = callbacks.complete || function(response) {};
// the actual ajax request
$.ajax({
url: requestURL,
method: 'GET',
dataType: 'json',
// Callback methods,
beforeSend: function() {
callbacks.beforeSend()
},
success: function(response) {
callbacks.success(response);
},
error: function(response) {
callbacks.error(response);
},
complete: function() {
callbacks.complete();
}
});
}
search function
function search() {
// Get your text box input, something like:
// You might want to put a validate and sanitation function before sending this to the ajax function.
var searchString = $('.textox').val();
// Set the fields or filters
var data = {
query: searchString,
resources: 'game'
};
// Send the ajax request with to '/search' resource and with custom callbacks
sendRequest('/search', data, {
// Custom callbacks, define here what you want the search callbacks to do when fired.
beforeSend: function(data) {},
success: function(data) {},
error: function(data) {},
complete: function(data) {},
});
}
Example of a get game function
function getGame() {
// get game id from somewhere like a link.
var gameID = '3030-38206';
var resource = '/game/' + gameID;
// Set the fields or filters
var data = {
field_list: 'name,description'
};
// No custom callbacks defined here, just use the default onces.
sendRequest(resource, data);
}
EDIT: you could also make a mini api wrapper out of this, something like:
var apiWrapper = {};
apiWrapper.request = function(resource, data, callbacks) {
// The get function;
};
apiWrapper.search = function(data) {
// The search function
};
apiWrapper.getGame = function(id, data) {
// The game function
}
apiWrapper.init = function(config) {
var config = config || {};
this.apiKey = config.apiKey || false;
this.baseURL = config.baseURL || 'http://api.giantbomb.com';
}
apiWrapper.init({
apiKey: '[API-KEY]'
});
Have not tested the code, so there might be a bug in it, will clean it up tommorow :)
Edit: fixed a bug in $.ajax

upload photo on facebook using javascript

I am trying to upload photo on facebook using javascript. I was able to do status update doing javascript but still struggling with how to upload photo. Can someone please tell me how to code this in Javascript?

The correct code would be:
var params = {};
params.url = 'https://myserver.com/myimage.jpg';
FB.api('/me/photos', 'post', params, function(response) {
if (!response || response.error) {
//error
} else {
picid = response.id;
}
});
Keep in mind that the photo has to be on your server, so you need a server script for the upload. the "url" parameter is the absolute url of your uploaded image file.
More information: https://developers.facebook.com/docs/reference/api/user/ (see Photos/Create)
Keep in mind that the "message" parameter has to be 100% user generated according to the Facebook terms. You also can´t post to a friend wall of the logged in user, that functionality is deprecated and does not work anymore.

I hope this will be useful. By doing photo upload to FB only with the help of javascript you can use the following method. Required thing here are imageData(which is base64 format of image) and the mime type.
try{
blob = dataURItoBlob(imageData,mimeType);
}catch(e){console.log(e);}
var fd = new FormData();
fd.append("access_token",accessToken);
fd.append("source", blob);fd.append("message","Kiss");
try{
$.ajax({
url:"https://graph.facebook.com/" + <<userID received on getting user details>> + "/photos?access_token=" + <<user accessToken>>,
type:"POST"
data:fd,
processData:false,
contentType:false,
cache:false,
success:function(data){
console.log("success " + data);
},
error:function(shr,status,data){
console.log("error " + data + " Status " + shr.status);
},
complete:function(){
console.log("Ajax Complete");
}
});
}catch(e){console.log(e);}
function dataURItoBlob(dataURI,mime) {
// convert base64 to raw binary data held in a string
// doesn't handle URLEncoded DataURIs
var byteString = window.atob(dataURI);
// separate out the mime component
// write the bytes of the string to an ArrayBuffer
//var ab = new ArrayBuffer(byteString.length);
var ia = new Uint8Array(byteString.length);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
// write the ArrayBuffer to a blob, and you're done
var blob = new Blob([ia], { type: mime });
return blob;
}

Here is an example code :
var imgURL = 'URL de la photo a uploader';
FB.api('/ALBUM_ID/photos', 'post', {
message: ' Ma photo',
url: imgURL,
}, function (response) {
});