We Keep Coding

Unable to find Vuejs equivalent function for the diagram from Angular

I tried a lot but was unable to find a solution. Please help me as I am struck on this issue for more than 1 day. Any help would be really appreciated.
I have a Syncfusion application that has been developed using Angular, now I would like to convert that application into Vuejs so trying to convert it but I am facing lot of issue as I am unable to find the 1:1 mapping of the ejsdiagram methods.
In Angular I was using the following code and respective method:
<ej-diagram id="diagram" e-height="80vh" e-width="100%" e-nodeCollectionChange="nodeCollectionChange" e-connectorCollectionChange="connectorCollectionChange" e-connectorTargetChange="connectorTargetChange" e-connectorSourceChange="connectorSourceChange" e-textChange="textChange"></ej-diagram>
Now I am using something like this in Vuejs:
<div id="app">
<ejs-diagram
id="diagram"
ref="diagramObj"
:width="width"
:height="height"
:collection-change="collectionChange"
:e-connector-collection-change="connectorCollectionChange"
/>
div>
I would like to know the Vuejs equivalent function for e-connectorCollectionChange, e-connectorTargetChange, etc, I searched a lot but could not find any documentation or maybe I missed something. Can someone please guide me through this?
Basically, I want to have something like this in my Vuejs+Syncfusion application. I have it in Angular+Syncfusion:

We have added the sample link to demonstrate how to add connector collection change and connector target change in the diagram. Instead of using connector collection change, we can use the collection change event which will be triggered when a new node or connector gets added to the diagram. Using the element argument in collection changed event args, we can able to find whether connector or node gets added to the diagram. For more information, please refer to the following documentation and the code snippet below.
<ejs-diagram style='display:block'
ref="diagramObject"
id="diagram"
:width='width'
:height='height'
:nodes='nodes'
:connectors='connectors'
:getNodeDefaults='getNodeDefaults'
:getConnectorDefaults='getConnectorDefaults'
:collectionChange="collectionChange"
:sourcePointChange="sourcePointChange"
:targetPointChange="targetPointChange"
:textEdit="textEdit">
</ejs-diagram>
Sample Link: https://www.syncfusion.com/downloads/support/directtrac/general/ze/Events16960811600180
Documentation Link: https://ej2.syncfusion.com/vue/documentation/diagram/getting-started/
Sample Browser Link: https://ej2.syncfusion.com/vue/demos/#/bootstrap5/diagram/diagram-events.html

How do I accurately insert my HTML into a Shopify shop via Script Tags?

I want to insert my block of HTML into a Shopify shop after a certain section but the problem is that each shop can use one of thousands of different themes, each one having a different DOM structure.
I can create the Script Tag and I can try to insert my HTML like this:
(function() {
var child = document.createElement("div");
var text = document.createTextNode("This is a test message");
child.appendChild(text);
var parent = document.getElementByClassName("ProductSection");
parent.appendChild(child);
})();
And this will work if the theme has a section with a class name of ProductSection but it won't for the majority of them that don't. Let's say I have an image gallery I'd like to show but only on Product pages and after the product description, what's the best way to select the product description DOM node so that I can insert my image gallery after it?
I found a couple threads with similar problems:
https://community.shopify.com/c/Shopify-APIs-SDKs/Using-Script-tag-to-add-dynamic-content-to-product-template/m-p/457855
https://community.shopify.com/c/Shopify-APIs-SDKs/Need-to-add-a-button-to-the-Product-page-via-a-Script-Tag/m-p/413919
and they seem to come to a similar conclusion, yet there are apps on the Shopify app market that do exactly this, and I wonder how do they do it?

As suggested in the links shared by you, it is not possible to correctly identify the DOM element in all the cases. However, there are couple of different approaches that can be used.
1) One is to ask merchant to add some specific element to markup that you can later use for rendering your content via JavaScript.
2) Try to guess the DOM element via some specific tag or href value, but allow merchants to override the DOM element selector via some JavaScript variable.
3) Use approach 2 with a combination of pre-determined info. Saw this approach used by AfterPay. They have a pre-defined array of popular themes along with their selectors. Then they use the theme name property from Shopify.theme.name
and get the relevant selectors. This solution may not work in all cases, so do allow the merchant to override DOM selector via some JavaScript variable.
Afterpay.supportedThemes = {
alchemy: {
product: {
"2017-12-14": {
selector: ".quadd-wrapper"
}
}
}
}
AfterPay JS Source Code
If you know of any other plugins, you can inspect the JavaScript and have a look how they identify the selectors.

NIghtwatch: I need to search for a word in a table without using document

I'm a beginner in using Nightwatch and I'm stuck with the following:
I've got a table that has a <tbody> and multiple <tr>s in it. I need to check if a specific word is in one of the cells in the first column.
First, I tried getting the whole table using document.GetElements... but it appears this is not supported by Nightwatch. Currently, I'm looking for a solution without using Nightwatch custom command.
P.S. I can't create tags yet, so it'd be awesome if someone could create one, like table-to-array or something like that.

You can execute javascript code into the browser using execute command (Documentation here). So you can do something like this:
client.execute(function(){
/*your js to get the DOM element and check if the element has the text you want*/
return true //or false if didnt find it
},[],function(response){
console.log(response.value)//this will contain your returned value
client.assert.equal(response.value, true, "Text not found on table")
})

create a new instance of group of elements

I am beginner in jQuery and asp.net. I created a simple chat application using SignalR, the design of which you can find here fiddle
How can I create a new instance of that chat design whenever a user has been call by other user while he/she were in chat from before with other user. Here I think I can convert it to User Control. but I dont want to have same Id's which I am using for other chat design and those generated instances should work differently, I mean if userA calls userB and at the same time userC calls userB then they must be created in such a way that they must be unique in handling there own calls (just like FB Chat).
The another issue may arise after successfully creating a new instance is that they might not be get attached to the jQuery functions and server side code automatically. If so, anyway to solve this too?
Before asking here I searched alot (maybe I dont know the exact keyword to search for).
EDIT: Many jQuery developers suggested me to go with Knockout.js or Backbone.js or simple jQuery. But I think there is some simple way to achieve this using ASP.NET functions like User Control or HTTP Handlers (or something else). About which I dont know anything. So, please suggest me which concept to opt for ? and please give detailed explanation(if possible with simple example).
jquery related answers are also welcome.
Single Instance
Multiple Instances

Use JQuery to populate or popup new instance of chat but change your ids using jquery. I would suggest have all your styling and ids done according to a parent container so you can easily grap the parent, duplicate it and change the IDs or content.
I would keep a non filled chat window with ID's like "updateme1" updateme2 etc and then once i get it as a template i will replace all ids one by one with relevant content.
You are doing it right and i dont think its signalR that you need to look into. SignalR would be able to help you pass on specific parameters like "requirechatwindow=true or false" based on if this person is in chat with current person but you can always do this on client as well by going through current open chat sessions. If current chat session does not contain a chat between A and B then open new window with new ID and put a data-from= A and data-to=B as a palceholder so you know this chat is between A and B etc
Hope this helps
UPDATED Fiddle and technique
Here is the fix on Your fiddle edited to show creation and multiple ids I had to adjust some of your css to view the boxes in different location
Updated the code with some comments
The technique is simple:
You create a html template on your page might be in a hidden region
You then use that to create new element in a container and have a handle to pickup this element for example in my code the currentid is my handle but i know the container name so i will only pickup template populated within the actual container to avoid conflict with template itself.
Assign a new id and then you can use any events or any speacial objects on there.
You can then pickup new elements from the new id or any other handle you might have inside them. For example i have just added a click even on it with confirm to hide it.
$('#doubleme').click(function(){
var currentid = $("#chattemplate .chat-outline").attr('data-tid');
var newid = parseInt(currentid,10) + 1;
$("#chatcontainers").append($("#chattemplate").html());
$("#chatcontainers .chat-outline").attr('id',"id"+newid);
$("#chattemplate .chat-outline").attr('data-tid',newid);
});
You only need these five lines of code actually and if you go to fiddle i have commented all of them but they are easy to understand. I am using selectors used in fiddle but these can be further optimised with attributes like data-handle-for or whatever name you can give.
If you are considering this for SignalR then within your hub response of new request you can call the intiate chat window which can setup everything on the client. Any subsequent messages using that data handle can be updated within this new chat window.
For example i assume you create a new group called "chatwindow7" and "chatwindow8" which makes its round trip in your send method and so on get broadcast to only user with this group. Then each user might have multiple windows open but you only need to pickup chatwindow7 for messages with that data handle and update it and so on.
If you are using one-to-one chat users only then you can use connection id as well which means all messages broadcasted will have both sender and reciever (by deafault) connection ID and you only need to pickup the window with connection id handle and update its list of messages or whatever.

The simplest way to do this is to replace the id attributes with class attributes.
<div id="chat-outline">
...
</div>
becomes
<div class="chat-outline">
...
</div>
And update your CSS appropriately.
.chat-outline
{
background-color: gray;
....
}
Then use a text/template tag to make it available to jQuery.
<script type="text/template" id="chat-template">
<div class="chat-outline">
...
</div>
</script>
Note that because browsers ignore script types they don't recognise, this will be ignored by the html rendering engine, but as it has an id, it will be visible to jQuery, and can be accessed thus:
<div id="container">
</div>
<script type="text/javascript">
$(function() {
var chatTemplate = $('#chat-template').html();
$('#container').append(chatTemplate); // First instance
$('#container').append(chatTemplate); // Second instance
$('#container').append(chatTemplate); // Third instance
});
</script>
Of course, if your code needs an id attribute as a handle for a chat instance, you can create a function that creates the chat-instance html given an id. In this case I'll use underscore to provide random-id, template, and iteration functions, but it is easy to use another library, or write your own.
<div id="container">
</div>
<script type="text/template" id="chat-template">
<div class="chat-outline" id="<%= id %>">
...
</div>
</script>
<script type="text/javascript">
var createChatInstance(idstring) {
return _.template($('#chat-template').html(), { id: idstring });
}
$(function() {
var chatTemplate = $('#chat-template').html();
// Create an array of 3 unique ids by which chat instances will be accessed.
var chatIds = [_.uniqueId('chat-outline'),
_.uniqueId('chat-outline'),
_.uniqueId('chat-outline')];
_.each(chatIds, function(chatId) {
$('#container').append(createChatInstance(chatId));
});
// You now have an array of 3 unique ids matching 3 divs.
// You can access individual sub-divs via descendent class matching from the id
// thus: $('#' + chatIds[n] + ' .chat-message').keyup(...code handling event...);
});
</script>
At this point, if you want to take the architecture further, you really do need to consider investigating something like backbone.js.
Hope this helps.

How to insert text into a form with JavaScript

I'm trying to create a simple extension for personal use. It's partially from laziness, and partially from an urge to learn. I've never made extensions before, but I've been looking at the documentation. Now I just need to write the code. What I'm trying to do, is when the browser loads a certain page, to insert text into a specific form. The form is as follows
<div id="set_tags" class="advanced_option">
<label for="post_tags" class="inline_input_label" id="post_tags_label"
onclick="Element.remove($(this))"
style="left:8px; right:auto; text-align:left">tags</label>
<input id="post_tags" name="post[tags]" type="text"/>
</div>
I haven't worked much with javascript, so is there a way to add the text "Music" to this when the page is loaded?

You can use the onload function to start your function.
http://javascript.about.com/library/blonload.htm
Since you are new to javascript you may want to get familiar with unobtrusive javascript (http://www.onlinetools.org/articles/unobtrusivejavascript/chapter4.html) which I find is a better way to write javascript, as you can then easily comment out javascript and see how it works when that is disabled. But, it would be easier to learn this in the beginning.
To get the input tag you can use document.getElementById() which would be something like:
var elem = document.getElementById('post_tags');
Then, to add text to this field there should be a value property in your input definition above, and you would just do:
elem.value = "Music";

document.getElementById("post_tags_label").appendChild(
document.createTextNode("Music"));
I'm assuming that you want to put it at the end of the element post_tags_label.

This is really easy to do if you use GreaseMonkey. It's perfect for personal changes you want to make to web pages, etc.