Local Storage is not shared between pages - javascript

I have an epub3 book with 2 pages as well as a Table of Contents Page. I am viewing this book in Apple's Books, their inbuilt epub3 reader, on Mac OSX. The two pages appear side by side. The first page is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=500, height=600"/>
</head>
<body>
<p id="result"></p>
<script>
//<![CDATA[
var current_page = "1";
var other_page = "2";
var t = 0;
setInterval(function() {
var d = new Date();
var storage = localStorage;
storage.setItem("t"+ current_page, d.toLocaleString());
document.getElementById("result").innerHTML = storage.getItem("t"+ current_page) +" "+storage.getItem("t"+ other_page);
}, 1000);
//]]>
</script>
</body>
</html>
and the only thing different in my second page is:
var current_page = "2";
var other_page = "1";
So every second, Page 1 saves the current time to Local Storage as t1, and Page 2 does the same for the value t2. At the same time, both pages are reading both t1 and t2 from Local Storage, before their values are displayed to screen. However in ibooks, Page 1 only manages to display the current value for t2 when the page is reloaded - like when I flip to the Table of Contents and then back to Page 1 and 2 again. With something similar happening for Page 2 with regard to t1.
So at time 21:10:00, Page 1 might display:
08/09/19, 21:09:18 08/09/19, 21:08:58
and Page 2:
08/09/19, 21:09:22 08/09/19, 21:08:01
I also tried using Session Data but Page 1 can't ever read t2 and Page 2 can't read t1. So, this would be displayed instead:
08/09/19, 21:09:18 null
I can think of several applications where it would be very useful for Pages to communicate with each other.
For example, if a video is playing on one page, it would be useful to stop it if a video on another page is started. This would normally be done using Session Storage. This is related to my own use case and the reason I started exploring this problem.
Likewise, if the user is asked on Page 1 to enters the name of the main character of the story, then that entry should appear immediately on Page 2 once it is entered.
Is there any other way for Pages to communicate with each other in epub3 other than Local or Session Storage?

I dont know epub3 and dont have a MAC to test, but here are four possible solutions that come to my mind:
Cookies
It is not as performant as localStorage for that use-case, but if you dont have many options, better that than nothing.
Functions to create, read and delete cookies (Credits to https://stackoverflow.com/a/28230846/9150652):
function setCookie(name,value,days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days*24*60*60*1000));
expires = "; expires=" + date.toUTCString();
}
document.cookie = name + "=" + (value || "") + expires + "; path=/";
}
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function eraseCookie(name) {
document.cookie = name+'=; Max-Age=-99999999;';
}
Usage for your example:
<script>
//<![CDATA[
var current_page = "1";
var other_page = "2";
var t = 0;
setInterval(function() {
var d = new Date();
setCookie("t"+ current_page, d.toLocaleString(), 100); // 100 days
document.getElementById("result").innerHTML = getCookie("t"+ current_page) +" "+getCookie("t"+ other_page);
}, 1000);
//]]>
</script>
BroadcastChannel
BroadcastChannel is a very new functionality, so it might not be supported by the "Books" app. But here is a concept:
<script>
//<![CDATA[
var broadcaster = new BroadcastChannel('test');
var current_page = "1";
var other_page = "2";
var t = 0;
setInterval(function() {
var d = new Date();
// Send message to all other tabs with BroadcastChannel('test')
bc.postMessage({
senderPage: "t"+ current_page,
date: d.toLocaleString()
});
}, 1000);
broadcaster.onmessage = (result) => {
if(result.senderPage == "t"+ other_page) { // If the message is from the other page
// Set HTML to current date + sent Date from other page
var d = new Date();
document.getElementById("result").innerHTML = d.toLocaleString() +" "+result.date;
}
};
//]]>
</script>
Some sort of Backend
If none of the above works, you probably have no other option, than to use some sort of backend, to provide and save the data
If it is just for you, I suggest you to use a free tier of Firebase or MongoDB Atlas, as they both provide quite some value on their free tier.
If you do it with a Backend, it could be done with something like this:
<script>
//<![CDATA[
var current_page = "1";
var other_page = "2";
var lastLocalDate = new Date();
const serverUrl = "http://someUrl.com/endpoint/"
// Gets the latest date of the other page via ajax
function getUpdate() {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == XMLHttpRequest.DONE) {
// If successful, update HTML
if (xmlhttp.status == 200) {
document.getElementById("result").innerHTML = lastLocalDate.toLocaleString() +" "+xhr.responseText;
}
// Update the date of this page anyways
sendUpdate();
}
};
// GET request with parameter requestingPage, which is the other page
xmlhttp.open("GET", serverUrl, true);
xmlhttp.send(`requestingPage=${other_page}`);
}
// Sends the current date of this page to the webserver
function sendUpdate() {
var xmlhttp = new XMLHttpRequest();
// No need to check if successful, just update the page again
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == XMLHttpRequest.DONE) {
getUpdate();
}
};
lastLocalDate = new Date();
// POST request with parameters page and date
xmlhttp.open("POST", serverUrl, true);
xmlhttp.send(`sendingPage=${current_page}&data=${lastLocalDate.toLocaleString()}`);
}
// Start with sending an update (so that lastLocalDate is at least sent once to the server)
sendUpdate();
//]]>
</script>
And some methods in your backend that need to look something like this (note that this is not valid code in any language):
#GET
function getDate(requestingPageId)
find latest entry with page.id == requestingPageId
return page.date
#POST
function saveDate(savingPage, savingDate)
store new page element with
page.id = savingPage
page.date = savingDate
And a collection in your database looking like this:
[
{
id: 1,
date: "date"
},{
id: 2,
date: "date"
},{
id: 2,
date: "date"
},{
id: 1,
date: "date"
},
// ...
]
Window References
If the Books app opens the second tab from the first tab, it might be worth to look into:
Window.postMessage()
With its functions:
Window.open()
to open the second tab and get a reference to it
And Window.opener to get a reference to the opener

Related

Authorize.net embedded iFrame accept.js response transaction

I have integrated authorize.net accept.js embedded iFrame in my application. Having trouble setting the transaction respone in my lambda function to get the response. I've seen similar questions on stack overflow but nothing worked out for me yet.
Using Nodejs for my backend and angular7 for the front-end.
I successfully get the token from my lambda function so my iframe appears on the ui. I've set \"showReceipt\": false providing url for cancel & continue, since the documentation says I have to set the show receipt parameter "false" in order to communicate with the IFrameCommunicator.html in the ui. But when I click on "Pay" its stuck at "Processing.." for a long time.
Following are the request & response headers respectively from the network tab:
* Cookie: __cfruid=deb63d2f12d9690aeea838cf7f31ada6da92bc1c-1602260930
* Host: test.authorize.net
* Origin: https://test.authorize.net
* Referer: https://test.authorize.net/payment/payment
* Sec-Fetch-Dest: empty
* Sec-Fetch-Mode: cors
* 
Sec-Fetch-Site: same-origin
{"resultCode":"Ok","messageCode":"Ok","transactionData":{"accountType":"Discover","accountNumber":"XXXX0012","transId":"40055282319","responseCode":"4","authorization":"TYIUU7","merchantName":"iMart Inc.","totalAmount":"1999.9","dateTime":"10/09/2020 4:20:27 PM"}}
I'm sure the transaction is happening looking at the response but not sure why it's not connecting with the communicator.
I've read the steps in the documentation and also followed the GitHub sample code-https://github.com/AuthorizeNet/accept-sample-app, which made me more confused since they both say different things at some places. Following are the steps I've accomplished until now :
Created a lambda hosted payment function with all the settings (followed the correct sequence) to get back a token.
Created a hosted payment form to display the iframe.
Able to make a payment --> get the receipt page --> routing to success screen.
What I'm trying to accomplish:
After I make the payment, initial idea was to trigger a different lambda function based on the response from authorize.net without communicating with IFrameCommunicator.html, but as I cannot do that, I want to get a response to initiate the next process at the backend.
Also, we're not storing any user details in our server and not interested in creating a customer profile unless it's a necessary step to get the transaction response. Please suggest the step integration if I can do it in the same lambda function I've created to get a token or I would have to create a different one for this and when will that step be implemented?
I know about the Webhooks but not sure if it's an absolute necessity at this point of time when I'm just trying to implement a simple transaction.
I'm a newbie and I couldn't find a lot of examples related to the same to resolve my issues/confusions. Would highly appreciate if I get a clear explanation on the steps here and where am I going wrong.
Following is the code -
accept-hosted.js Lambda function:
merchantAuthenticationType.setName('*****');
merchantAuthenticationType.setTransactionKey('******');
var transactionRequestType = new ApiContracts.TransactionRequestType();
transactionRequestType.setTransactionType(ApiContracts.TransactionTypeEnum.AUTHCAPTURETRANSACTION);
transactionRequestType.setAmount(Total);
var setting1 = new ApiContracts.SettingType();
var setting2 = new ApiContracts.SettingType();
var setting4 = new ApiContracts.SettingType();
var setting5 = new ApiContracts.SettingType();
var setting6 = new ApiContracts.SettingType();
var setting7 = new ApiContracts.SettingType();
var setting8 = new ApiContracts.SettingType();
var setting9 = new ApiContracts.SettingType();
var setting10 = new ApiContracts.SettingType();
var setting11 = new ApiContracts.SettingType();
setting2.setSettingName("hostedPaymentButtonOptions");
setting2.setSettingValue("{\"text\": \"Pay\"}");
setting1.setSettingName("hostedPaymentReturnOptions");
setting1.setSettingValue(
"{\"showReceipt\": false, \"url\": \"https://iMart.com/success.html\", \"urlText\": \"Continue\", \"cancelUrl\": \"https://iMart.com/error.html\", \"cancelUrlText\": \"Cancel\"}");
setting10.setSettingName("hostedPaymentOrderOptions");
setting10.setSettingValue("{\"show\": false, \"merchantName\": \"iMart Inc.\"}");
setting5.setSettingName("hostedPaymentPaymentOptions");
setting5.setSettingValue("{\"cardCodeRequired\": true, \"showCreditCard\": true, \"showBankAccount\": false}");
setting7.setSettingName("hostedPaymentShippingAddressOptions");
setting7.setSettingValue("{\"show\": false, \"required\": false}");
setting8.setSettingName("hostedPaymentBillingAddressOptions");
setting8.setSettingValue("{\"show\": false, \"required\": false}");
setting6.setSettingName("hostedPaymentSecurityOptions");
setting6.setSettingValue("{\"captcha\": true}");
setting4.setSettingName("hostedPaymentStyleOptions");
setting4.setSettingValue("{\"bgColor\": \"blue\"}");
setting9.setSettingName("hostedPaymentCustomerOptions");
setting9.setSettingValue("{\"showEmail\": false, \"requiredEmail\": false, \"addPaymentProfile\": true }");
setting11.setSettingName("hostedPaymentIFrameCommunicatorUrl");
setting11.setSettingValue("{\"url\": \"https://iMart.com/IFrameCommunicator.html\"}");
var settingList = [];
settingList.push(setting2);
settingList.push(setting10);
settingList.push(setting5);
settingList.push(setting7);
settingList.push(setting8);
settingList.push(setting6);
settingList.push(setting4);
settingList.push(setting9);
settingList.push(setting11);
settingList.push(setting1);
var alist = new ApiContracts.ArrayOfSetting();
alist.setSetting(settingList);
var firstname = new ApiContracts.UserField();
firstname.setName('First Name');
firstname.setValue(firstName);
var lastname = new ApiContracts.UserField();
lastname.setName('Last Name');
lastname.setValue(lastName);
var userFieldList = [];
userFieldList.push(firstname);
userFieldList.push(lastname);
var userFields = new ApiContracts.TransactionRequestType.UserFields();
userFields.setUserField(userFieldList);
var transactionSetting1 = new ApiContracts.SettingType();
transactionSetting1.setSettingName('duplicateWindow');
transactionSetting1.setSettingValue('120');
var transactionSetting2 = new ApiContracts.SettingType();
transactionSetting2.setSettingName('recurringBilling');
transactionSetting2.setSettingValue('false');
var transactionSetting3 = new ApiContracts.SettingType();
transactionSetting3.setSettingName('emailCustomer');
transactionSetting3.setSettingValue('true');
var transactionSetting4 = new ApiContracts.SettingType();
transactionSetting4.setSettingName('headerEmailReceipt');
transactionSetting3.setSettingValue('You are all set!');
var transactionSetting5 = new ApiContracts.SettingType();
transactionSetting5.setSettingName('footerEmailReceipt');
transactionSetting5.setSettingValue('This is the footer');
var getRequest = new ApiContracts.GetHostedPaymentPageRequest();
getRequest.setMerchantAuthentication(merchantAuthenticationType);
getRequest.setTransactionRequest(transactionRequestType);
getRequest.setHostedPaymentSettings(alist);
var ctrl = new ApiControllers.GetHostedPaymentPageController(getRequest.getJSON());
const basicAuth = encode.encode("*****", 'base64');
await axios({
method: 'post',
url: 'https://apitest.authorize.net/xml/v1/request.api',
headers: {
'Authorization': 'Basic '+basicAuth,
'Content-Type': 'application/json'
},
data:JSON.stringify(ctrl._request)
}).then(async (data : any)=>{
if(data.data.token) {
callback(null, data.data) ;
} else callErr(data);
});
async function callErr(data: any){
callback(null, res) ;
}
}
IFrameCommunicator.html:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Iframe Communicator</title>
<script type="text/javascript">
//<![CDATA[
function callParentFunction(str) {
if (str && str.length > 0
&& window.parent
&& window.parent.parent
&& window.parent.parent.AuthorizeNetPopup
&& window.parent.parent.AuthorizeNetPopup.onReceiveCommunication)
{
// Errors indicate a mismatch in domain between the page containing the iframe and this page.
window.parent.parent.AuthorizeNetPopup.onReceiveCommunication(str);
}
}
function receiveMessage(event) {
if (event && event.data) {
callParentFunction(event.data);
}
}
if (window.addEventListener) {
console.log('addEventListener');
console.log(receiveMessage);
window.addEventListener("message", receiveMessage, false);
} else if (window.attachEvent) {
window.attachEvent("onmessage", receiveMessage);
}
if (window.location.hash && window.location.hash.length > 1) { callParentFunction(window.location.hash.substring(1));
}
//]]/>
</script>
</head>
<body>
</body>
</html>
Angular code for showing the iFrame:
<iframe id="add_payment" class="embed-responsive-item panel" name="add_payment" width="100%" frameborder="0" scrolling="yes">
</iframe>
</div>
<form id="send_token" action="" method="post" target="add_payment" >
<input id="token" type="hidden" name="token" />
</form>
I have been struggling a lot since many days now with a time crunch. Would be really helpful if someone provides me with a good insight here. Please let me know if additional info is required. Thank you in advance!!!
Here are the answer for all your question, I hope it works :
1)if you are using iFrame then iFrameCommunicator is mandatory
2)the success url can only be used when you set "showReceipt" as true, here you cannot navigate automatically to yoour success page, this is the link for "Continue" button which appears when "showReceipt" is allowed
3)If you want to trigger any function or want to navigate after the response then add the following code in your html file
<script type="text/javascript">
$(document).ready(function () {
window.CommunicationHandler = {};
function parseQueryString(str) {
var vars = [];
var arr = str.split('&');
var pair;
for (var i = 0; i < arr.length; i++) {
pair = arr[i].split('=');
vars[pair[0]] = unescape(pair[1]);
}
return vars;
}
window.CommunicationHandler.onReceiveCommunication = function (argument) {
console.log('communication handler enter', argument);
var params = parseQueryString(argument.qstr)
switch (params['action']) {
case "resizeWindow":
console.log('resize'); break;
case "successfulSave":
console.log('save'); break;
case "cancel":
console.log('cancel'); break;
case "transactResponse":
sessionStorage.removeItem("HPTokenTime");
console.log('transaction complete');
var transResponse = JSON.parse(params['response']);
console.log('transaction complete1', transResponse);
// window.location.href = '/checkout/complete';
}
}
//send the token
$('#send_hptoken').submit();
});
</script>

How to save info in database when user favorites?

I'm failing to save the info to when a logged in user clicks on the favorite button.
This is my first week in javascript class(including ajax). We're allowed to copy paste as long as we understand the process. So the first thing I did was looking up tutorials as to how to make favorite / unfavorite buttons and took over a template. Then I searched up how save the info in the database once the user clicks the favorite button. I'm not sure linking to external websites is allowed but I specifically took over this code:
<!DOCTYPE html>
<html>
<head>
<title>New page name</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
<script>
/*
* Create cookie with name and value.
* In your case the value will be a json array.
*/
function createCookie(name, value, days) {
var expires = '',
date = new Date();
if (days) {
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
expires = '; expires=' + date.toGMTString();
}
document.cookie = name + '=' + value + expires + '; path=/';
}
/*
* Read cookie by name.
* In your case the return value will be a json array with list of pages saved.
*/
function readCookie(name) {
var nameEQ = name + '=',
allCookies = document.cookie.split(';'),
i,
cookie;
for (i = 0; i < allCookies.length; i += 1) {
cookie = allCookies[i];
while (cookie.charAt(0) === ' ') {
cookie = cookie.substring(1, cookie.length);
}
if (cookie.indexOf(nameEQ) === 0) {
return cookie.substring(nameEQ.length, cookie.length);
}
}
return null;
}
/*
* Erase cookie with name.
* You can also erase/delete the cookie with name.
*/
function eraseCookie(name) {
createCookie(name, '', -1);
}
var faves = new Array();
$(function(){
var url = window.location.href; // current page url
$(document.body).on('click','#addTofav',function(e){
e.preventDefault();
var pageTitle = $(document).find("title").text();
var fav = {'title':pageTitle,'url':url};
faves.push(fav);
var stringified = JSON.stringify(faves);
createCookie('favespages', stringified);
location.reload();
});
$(document.body).on('click','.remove',function(){
var id = $(this).data('id');
faves.splice(id,1);
var stringified = JSON.stringify(faves);
createCookie('favespages', stringified);
location.reload();
});
var myfaves = JSON.parse(readCookie('favespages'));
faves = myfaves;
$.each(myfaves,function(index,value){
var element = '<li class="'+index+'"><h4>'+value.title+'</h4> Open page '+
'Remove me';
$('#appendfavs').append(element);
});
});
</script>
</head>
<body>
Add me to fav
<ul id="appendfavs">
</ul>
</body>
</html>
It displays "add me to fav" like it's supposed to but then when I click on it, it returns:
(index):54 Uncaught TypeError: Cannot read property 'push' of null
at HTMLAnchorElement.<anonymous> ((index):54)
at HTMLBodyElement.dispatch (jquery.min.js:3)
at HTMLBodyElement.r.handle (jquery.min.js:3)
The assignment is as follows:
""- Show a 'favorite' icon / heart. Make this clickable via jQuery / JavaScript. If you click on it, an AJAX request must be sent with the blog post id. A WP plugin must 'process' the AJAX request, and store in the session (or database) that user X has liked a certain blog post. The server must return a JSON response."
Now had a small side question, for after I resolve the error of this thread, is my way of thinking correct:
Through CSS I'll create a heart button
This script itself does the ajax request with post ID
WP plugin I've done before
This script provides the JSON response
Thank you stack overflow in advance, I look forward to learning!

how to delete a cookie if the browser crashes

I have a situation in my application where the users should are not allowed to open multiple instances of the application in a browser. So we are reading the cookies, if there is a session already opened we alerting the user that they are attempting to open multiple sessions.Some times if the browser crashes for some reason the browser is still having the old cookie and when the user is attempting to open the application again the browser is not allowing the user to login. User has to manually delete the cookie from the browser history. The business doesn't want that process.FYI I am using angularJS
Found the same question in other post but didn't find an answer I want here Can someone please help me out with this. Thanks in advance!
I came up with the following code. But when the application crashes the cookie is still sitting in the browser and not allowing the user to login at all. The only workaround for me now is to delete the cookie manually from the browser and login.
var duplicateApp = false;
function createCookie(name,value,days) {
var expires = "";
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days*24*60*60*1000));
expires = "; expires=" + date.toUTCString();
}
document.cookie = name + "=" + value + expires + "; path=/";
}
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function eraseCookie(name) {
createCookie(name,"",-1);
}
window.onload = function(){
var MyAppCount=readCookie("MyApp");
if (MyAppCount > 0) {
duplicateApp = true;
alert("You are attempting to open multiple application sessions.\n\nPlease close any existing application from the web browser before restarting the application.");
var win = window.open("about:blank", "_self"); win.close();
}
else {
duplicateApp = false;
createCookie("MyApp", 1, 1);
window.onunload = function(){
if (duplicateApp == false) eraseCookie("MyApp");
};
}
};
Could you please suggest any changes I have to make to restrict the user to open only single instance of the application.
I would typically handle this on the login page by creating a new session and invalidating the old one when a user logs in again with the correct credentials.

Javascript Cookie Not Setting

I have an application that needs to pop a URL based on a Query String sent to it. Unfortunately, we can't insert any javascript into the application itself, but we can insert an iFrame that loads a page running javascript. There is a bug in the application where it loads the content in the iFrame twice within a couple seconds, which results in the URL popping twice.
To resolve this, I decided to set a cookie with an expiration. Before popping, I would check to see if the cookie exists, and if it does, prevent the pop from happening.
Unfortunately, my cookie is not being set. I've read a few threads about Javascript cookies trying to figure this out. The first thing I found is Chrome does not accept cookies from local files, so I set up an IIS server to host the page.
However, the cookie still is not being set. I read this page to make sure my code was correct, and as far as I can tell, it should be correct.
The code for my page is below. Any help would be greatly appreciated.
<html>
<head>
<script type="text/javascript">
var isPopped;
function myFunction() {
alert("Hello! I am an alert box!");
}
function checkCookie() {
var user=getCookie("username");
if (user != "") {
alert("Welcome again " + user);
} else {
user = prompt("Please enter your name:","");
if (user != "" && user != null) {
setCookie("username", user, 30);
}
}
}
function pop() {
var queryString = location.search.substring(1); //Get Query String from URL of iFrame source. The substring(1) strips off the ? and only takes the first substring. This can be modified to take more and the resulting string can be edited with Regular Expressions if more flexibility is required.
var urlToPop = "https://www.google.com/#" + queryString //Set URL to pop.
var recentVisitTrue=getCookie("visitRecent");
if (recentVisitTrue != "") {
isPopped = 1;
} else {
window.open(urlToPop,"_blank");
setCookie("visitRecent", "true");
}
}
function setCookie(cName,cValue) {
var date = new Date();
date.setTime(d.getTime() + 8000000);
var expires = "; expires=" + date.toGMTString();
document.cookie = cName + "=" + cValue + expires + ";path=/";
}
function getCookie(cName) {
var name = cName + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1);
if (c.indexOf(name) == 0) {
return c.substring(name.length, c.length);
}
}
return "";
}
</script>
</head>
<body onload="pop();">
v0.32
</body>
</html>
Thanks!

Load a JavaScript event the last in CRM form

I have one image saved in Notes with every form in my CRM Online 2013 custom entity. I am using the following code to query the image and show it in an Image tag in a Web Resource on the form. For debugging purposes I was calling the following code through a button, but I want this process of querying the Notes and displaying the image in the web resource to be automatic when the form load. Here is my code:
<html><head><meta charset="utf-8"></head>
<body>
<img id="image" src="nothing.jpg" style="width: 25%; height: auto;" />
<script type="text/javascript">
$(windows).load(function()
{
var recordId = window.parent.Xrm.Page.data.entity.getId();
var serverUrl = Xrm.Page.context.getServerUrl().toString();
var ODATA_ENDPOINT = "XRMServices/2011/OrganizationData.svc";
var objAnnotation = new Object();
ODataPath= serverUrl+ODATA_ENDPOINT;
var temp= "/AnnotationSet?$select=DocumentBody,FileName,MimeType,ObjectId&$filter=ObjectId/Id eq guid'" + recordId + "'";
var result =serverUrl + ODATA_ENDPOINT + temp;
var retrieveRecordsReq = new XMLHttpRequest();
retrieveRecordsReq.open('GET', ODataPath + temp, false);
retrieveRecordsReq.setRequestHeader("Accept", "application/json");
retrieveRecordsReq.setRequestHeader("Content-Type", "application/json; charset=utf-8");
retrieveRecordsReq.onreadystatechange = function ()
{
if (this.readyState == 4 /* complete */)
{
if (this.status == 200)
{
this.onreadystatechange = null; //avoids memory leaks
var data = JSON.parse(this.responseText, SDK.REST._dateReviver);
if (data && data.d && data.d.results)
{
SuccessFunc(JSON.parse(this.responseText, SDK.REST._dateReviver).d.results);
}
}
else
{
alert(SDK.REST._errorHandler(this));
}
}
};
var x = new XMLHttpRequest();
x.open("GET", result, true);
x.onreadystatechange = function ()
{
if (x.readyState == 4 && x.status == 200)
{
var doc = x.responseXML;
var title = doc.getElementsByTagName("feed")[0].getElementsByTagName("entry")[0].getElementsByTagName("content")[0].getElementsByTagName("m:properties")[0].getElementsByTagName("d:DocumentBody")[0].textContent;
document.getElementById('image').src ="data:image/png;base64,"+title;
}
};
x.send(null);
});
</script>
</body></html>
I have removed the button tag..now I want this the query to happen on page Load, but nothing happens when I refresh the form. In my opinion the function loads before the annotation loads. Is there a way to make it wait and load the last?
If you want to wait for the parent window to load I think $(windows).load(myFunction); should do the trick.
Maybe $ is undefined because you did not add jQuery to your webressource.
There are also a few little mistakes and unattractive things:
First:
You will get a wrong server url.
If you want to access the Xrm-object in a webresource you always have to use window.parent.Xrm or you put it in a variable var Xrm = window.parent.Xrm;
For example:
var Xrm = window.parent.Xrm;
var recordId = Xrm.Page.data.entity.getId();
var serverUrl = Xrm.Page.context.getServerUrl().toString();
Second:
The ODataPath variable is not declared. Use var ODataPath= serverUrl+ODATA_ENDPOINT; instead. By the way the value of the ODataPath has nothing to do with OData. It is more the REST-Endpoint of Dynamics CRM.
My script would look like this:
var Xrm, recordId, serverUrl, restEndpointUrl, odataQuery, fullRequestUrl, xmlRequest;
Xrm = window.parent.Xrm;
recordId = Xrm.Page.data.entity.getId();
serverUrl = Xrm.Page.context.getServerUrl().toString();
restEndpointUrl = serverUrl + "/XRMServices/2011/OrganizationData.svc";
^ I think a '/' was missing there
odataQuery = "/AnnotationSet?$select=DocumentBody,FileName,MimeType,ObjectId&$filter=ObjectId/Id eq guid'" + recordId + "'";
fullRequestUrl = restEndpointUrl + odataQuery;
I also dont understand why you use the second HttpRequest.
All of this code is not tested.

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