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Angular 6 - Cannot create angular components under custom HTML tags

I have two angular components whose respective templates are called home.component.html and information-icon.html.
I am using custom HTML elements, so when I define my custom elements together only in one template, for example in home.component.html, the template shows correctly elements defined:
<!-- home.component.html-->
<sh-access-bar label="Access bar">
<sh-button icon="example.png"></sh-button>
</sh-access-bar>
Nevertheless, I need two separate components to my purpose, so If I defined both templates like this, the component doesn't render correctly:
First component:
<!-- home.component.html-->
<sh-access-bar label="Access bar">
<app-information-icon></app-information-icon> <!--Component selector-->
</sh-access-bar>
Second component:
<!--information-icon.component.html-->
<sh-button icon="example.png"></sh-button>
Are there any way in Angular to render both components correctly?
Are there any properly way to create custom tags dynamically as a component?
I will appreciate any kind of help.

How can I importing external JS file in Ionic 3

I am finding problem in adding the external js file to Ionic 3. Here is what I did, I have created a hamburg.js file in src/js/hamburg.js, and called the script file in index.html at app/index.html. And I have added the html code in testpage.hmtl and css in testpage.scss. Also declared in app.component.ts. Here is my code
app.component.ts
declare var wrapperMenu;
hamburg.js
var wrapperMenu = document.querySelector('.wrapper-menu');
wrapperMenu.addEventListener('click', function(){
wrapperMenu.classList.toggle('open');
})
index.html
<script src="assets/js/hamburg.js"></script>
testpage.html
<div class="wrapper-menu">
<div class="line-menu half start"></div>
<div class="line-menu"></div>
<div class="line-menu half end"></div>
Can somebody guide me please?

There is no need to external js file, this plugin play mostly with CSS.
this snippet
var wrapperMenu = document.querySelector('.wrapper-menu');
wrapperMenu.addEventListener('click', function(){
wrapperMenu.classList.toggle('open');
})
can be putted on app.component.ts file. or if you have separate component for the header will be better to put the code in its ts file specifically on ngOnInit() hook.
Edit the best hook in component life-cycle is to put this code into ngAfterViewInit() hook.
Edit 2: Another good practice is to used the predefined class menu-content-open that is added automatically when the menu is opened and you can change the selector in your CSS code from .open to menu-content-open
check my forked example from your original one here.
Note the code will work perfect when you add it into the ionic app.

Angular 1 how to properly include external component inside ng-include?

Situation: I have a view where I'm including a fragment with ng-include. The fragment loads perfectly and works as expected when inside view where controller is defined.
My problem is, that when I want to include external component inside the "ng-include" fragment "myView.html", it doesn't show up. When including it inside the main view where the controller is, it shows up and works as expected.
Main view:
<div ng-controller="MyController">
<div data-ng-include src="'views/myView.html'"></div>
<!-- When loaded here, the component shows up -->
<!-- <div id="componentDiv"></div> -->
</div>
Fragment "myView.html":
<div>
<div id="componentDiv"></div>
</div>
The component is loaded inside the "MyController", where "componentDiv" is the "id" of "div" where the component is placed:
var testObj = new TestObj({"container": "componentDiv"});
Trying to do this to be able to use this fragment with full functionality in several places.
Any ideas or suggestions what to look up or try?

IMHO I think that by saying "...to be able to use this fragment with full functionality in several places" you just answered your question. What you need is to build a custom directive and use it in any place you like.
see directive samples e.g. Angular documentation on directives

Are'nt we Allowed to write html codes if we use backbone.js?

I am learning backbone.js and I have seen some examples like this one.Here the user has not written much html codes inside the editor.html.Only 4 lines of code.But for colour change,size change etc he has done inside editor.js
Please help me understand what all codes we need to keep inside .html file
<div id="page" style="width:2000px;height:2000px;">
<button id="new-rectangle">New Rectangle</button>
<button id="new-circle">New Circle</button>
</div>

You should aim to put all your html in .html file(s). As an app grows, it will help you to keep them separate. The example you link to is a 'simplified' version - this is not how you would structure things in an actual app. You would load html from templates in the render function. A (though this is also simplified as I am relying on script tags) pattern would be:
HTML file:
[...SOME HTML...]
<script type="text/html" id="template-contact">
<div class='contact'>
<h1>Here's my template code</h1>
<strong>name</strong>
<span>email</span>
</div>
</script>
Then in your Backbone view render function:
render: function() {
template: _template($('#template-contract').html(),
this.$el.html(this.template());
return this;
}
Then somewhere else in your Backbone code you create a new instance of the view and render it.
var example = new view_name();
example.render(); //This loads the html template
If you need to dynamically load the html from a server, you can use underscore (or whichever template engine you are using) tags in your template '<%>' and use models. This is best explained in Addy Osmani's book Developing Backbone.js Applications which, incredibly, is free. Here's the link to the relevant section

Whatever you wants to display on the browser you can keep it in .html file and logic to update the dom on run time should be in .js file.

ExpressionEngine putting Javascript on a page

I am a super beginner to EE and was literally thrust into managing my company's website that is built in EE without training. I'm not a programmer, I'm a designer, so it's been taking me awhile to plug through this. So I might need some dumbed down language :)
I want to create a page that has some Javascript on it. Do I need to create a new template JUST so I can put some javascript on it? And how do I communicate to EE that I want the page I created to go with that template?
I duplicated the page/index template and renamed it to clinician-map (the same name of the page I created in the publisher). EE didn't like that and the page subsequently broke. All I want to do is insert one javascript item, this seems way too inefficient for just one page. Help??
(using EE 1.6.8)
Here is my code from clinician-map template.
{assign_variable:my_weblog="page"}
{assign_variable:my_template_group="page"}
{embed="embeds/html_head" url_title="{segment_2}"}
{embed="embeds/html_styles"}
{embed="embeds/html_scripts"}
<?php include_once("analyticstracking.php") ?>
</head>
{exp:weblog:entries weblog="{my_weblog}" disable="categories|member_data|pagination|trackbacks" limit="1" sort="asc" }
<body class="{url_title}">
{/exp:weblog:entries}
<div id="wrapper">
{embed="embeds/html_headerPlusLeftNav"}
<div id="content">
<div id="contentMain">
{exp:weblog:entries weblog="{my_weblog}" disable="categories|member_data|pagination|trackbacks" limit="1" sort="asc"}
<h2>{title}</h2>
{page_body}
{/exp:weblog:entries}
<!--contactforminfo -->
{exp:weblog:entries weblog="{my_weblog}" disable="categories|member_data|pagination|trackbacks"}
{related_entries id="playa_contentcalloutitems"}
<div class="callout">
<h3>{title}</h3>
{callout_summary}
</div>
{/related_entries}
{/exp:weblog:entries}
{exp:weblog:entries weblog="{my_weblog}" disable="categories|member_data|pagination|trackbacks"}
{related_entries id="playa_contentfeatureditems"}
<div class="featuredContent">
<h3>{title}</h3>
{exp:word_limit total="50"}
{contentfeatured_summary}
{/exp:word_limit}{if contentfeatured_body!=""}<p><a href='{url_title_path='content-featured/'}' class='more'>Read More</a></p>{/if}
</div>
{/related_entries}
{/exp:weblog:entries}
</div>
{exp:weblog:entries weblog="{my_weblog}" disable="categories|member_data|pagination|trackbacks"}
<div id="contentSub">{related_entries id="playa_contentsubitems"}<div class="item {contentsub_bgcolor}">
{if contentsub_contenttype=="Text or Picture with Text"}
<h3>{title}</h3>
{exp:word_limit total="50"}
{contentsub_summary}
{/exp:word_limit}{if contentsub_body!=""}<p><a href='{url_title_path='content-sub/'}' class='more'>Read More</a></p>{/if}
{if:else}
<h3 class="imgHeader">{title}</h3>
{exp:html_strip convert="y" convert_back="none" keep="a,img"}
{contentsub_summary}
{/exp:html_strip}
{/if}
</div>{/related_entries}
{/exp:weblog:entries}
{embed="embeds/html_mailingListSignup"}
</div>
</div>
{embed="embeds/html_footer"}
</div>
</body>
</html>

At glance I can see a couple things that might be confounding you...
You started with a template called 'index' in the 'page' template group.
Looks like the 'page' template you are starting from is meant to display a single entry from the 'page' weblog.
So a request url might look something like this:
http://example.com/page/some_url_title
where 'some_url_title' is the 'url_title' value one of the entries in your 'page' weblog.
Now you have gone and duplicated the index template and called this new template 'clinician-map'.
So you would call an entry through this template at:
http://example.com/page/clinician-map/some_url_title
Now, notice that the first url had 2 segments, while the second had 3 segments?
That's not normally a big deal but the fellow who designed the index template did something that makes it problematic. He is taking the value of segment_2 and passing it through an embed.
So in the first example (index) we are passing the dynamic value "some_url_tile" while in the second example (clinician-map) we are passing "clinician-map". If the embedded template 'html_head' is expecting to get a valid url_title but instead gets the string 'clinician-map' you are likely going to get unexpected results.
Also I don't think we know enough about what you are trying to do to decide if creating a new template is the right approach here. It may be that what you actually need is a new weblog entry or perhaps just a dynamic value inside your existing template.
If it did turn out that a new template is the best approach you could fix the problem I have described by simply replacing segment_2 with segment_3, but I am by no means certain that that is the way you want to go.

I want to create a page that has some Javascript on it. Do I need to
create a new template JUST so I can put some javascript on it?
More specifics would be needed in order to give a solid recommendation but in almost every case, I recommend keeping JavaScript grouped together either in the <head></head> or ideally right before the closing </body> tag if you can get away with it.
Looking at your template code, it appears all the JavaScript is stored in the embeds/html_scripts page. I would add the JavaScript you need to that template. If you only want the JavaScript to appear for certain pages only, I would make use of a conditional (which I'll outline at the end of my answer).
And how do I communicate to EE that I want the page I created to go
with that template?
ExpressionEngine URLs (by default) are assembled as follows:
http://website.com/group/template/url_title
Therefore if you have a page with a url_title of "contact-us", and you wanted that page to use a template in site/pages, you could tell your page to use that template like so:
http://website.com/site/pages/contact-us
That url is obviously fine and dandy for blog articles and such, but it's not that pretty; so ExpressionEngine also enables you to construct "page" based navigation which creates navigation tree based url structures, such as:
http://website.com/contact-us
There are a few third party modules that make it easy to build page navigation such as:
devot-ee.com/add-ons/structure
Using Structure, you specify the default template for each channel and can override the template for each page as well.
I duplicated the page/index template and renamed it to clinician-map
(the same name of the page I created in the publisher). EE didn't like
that and the page subsequently broke. All I want to do is insert one
javascript item, this seems way too inefficient for just one page.
Help??
(using EE 1.6.8) Here is my code from clinician-map template.
There are a number of things I would do different in regards to the template code you provided; however, as a quick fix here's how I would add the one line of JavaScript,
1) Open the embeds/html_scripts template and add the following logic:
{if segment_2 == "my_page_url_title"}
<!-- javascript here -->
{/if}
Note: Here's how segments are determined:
http://website.com/segment_1/segment_2/segment_3

Okay. I ended up just creating a new webblog and new template group and finally it seems like it's working. My javascript is not, but I can figure that out.
Thank you so much for your patience with helping me!