Develop Reference

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

Is it possible to use JQuery includes with Angular Includes?

I am working on an application that utilizes both Jquery and AngularJS includes, however Angular does not seem to execute after Jquery has included a file that has AngularJS markup. Jquery is including the "top_nav.html" template and inside this template there lives a angluar ng-include calling cart.html". I need to figure out how to get the angular code to execute after being included by jQuery.
<div id="topNav"></div>
<script>
//outside the document ready statment
$('#topNav').load('includes/top_nav.html');
<script>
top_nav.html:
<div>
...
<div ng-controller="shoppingCart"
class="shopping-cart"ng-include="'includes/cart.html'"></div>
</div>

The jquery load does an ajax request. When the ajax is resolved, the angular have already been bootstrapped (assuming you use ng-app directive), so the html chunk that have been dynamically loaded was not bootstrapped by angular.
So, I guess that on the callback of the jquery load, you need to manually bootstrap angular passing <div id="topNav"></div> as the context. Something like this:
var topNav = $( "#topNav" );
topNav.load( "includes/top_nav.html", function() {
angular.bootstrap(topNav.find("> div")[0], ['topNavAngularModule']);
});
Note: I'm not sure, sorry, I haven't tested it, but I think it might only work if #topNav is located outside ng-app.

Pass variable from one html file to another

I'm creating an Angular 2 webpage - I originally had 1 HTML file that contained everything I needed for my web page's UI - for design reasons, I've taken out a part of the HTML and created a separate component for it (specifically a Tree view display). I've been able to reference the other HTML file (treeview) fine using its selector tree-selector in my original HTML like so:
<div *ngIf="showTree">
<h1>Using treeview template.</h1>
<tree-selector></tree-selector>
</div>
The code for tree-selector.html is (I'm using PrimeNG UI components):
<p-tree [value]="fileSystemTree" selectionMode="single" (onNodeSelect)="nodeSelect($event)" (onNodeUnselect)="nodeUnselect($event)" (onNodeExpand)="nodeExpand($event)" [style]="{'max-height':'200px','overflow':'auto'}"></p-tree>
Before, when everything was in 1 file, it was easy to use the variable "fileSystemTree" to use for [value]. Now that I have two HTML files, I'm unsure of how to use fileSystemTree again in my main HTML and link it to [value] in tree-selector.html.

Pass it to <tree-selector></tree-selector> as input parameter and then further to <p-tree...>
<div *ngIf="showTree">
<h1>Using treeview template.</h1>
<tree-selector [fileSystemTree]="fileSystemTree"></tree-selector>
</div>
in tree-selector component:
#Input() fileSystemTree: any;

Is it possible to separate the javascript code from the tag file in Riot Js?

I would like to know if it is possible to do something like:
<todo>
<div class="greetings">Hello, world!</div>
<script src="/path/to/my/file.js"></script>
</todo>
The tag would keep the view (html) while the js code stays in a different file:
todo.tag (html/css)
todo.js

To give an alternative to the mixin solution, here is another way of splitting up your markup from your logic.
Take a look at this Plunker (a colleague of mine wrote this). The key part is the way you reference the tag function. <script>todoTag.call(this, this.opts);</script>. In this case, the todoTag is a global function. But nothing stops you from name spacing that function or use some form of module loading.
From the plunker:
todo.tag.html:
<todo>
<!-- your markup -->
<script>todoTag.call(this, this.opts);</script>
</todo>
todo.tag.js:
function todoTag(opts) {
// your logic
}

After looking into it i found that it is possible to separate the js from the tag file by using mixins. So, we would have something like:
<dropdown>
<select>...</select>
<!-- more html code here -->
this.mixin(Dropdown);
</dropdown>
The Dropdown instance will be in dropdown.js and the tag in dropdown.tag.
Hope this helps.

I've found another option to separate the js code from the tag by using a regular js constructor, like this:
<dropdown>
<!-- html code -->
<script>new Dropdown(this)</script>
</dropdown>
then we can just have
function Dropdown(tag) {
// constructor code
}
and
Dropdown.prototype = { ... }
as usual

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.