It is new from AngularJS 1.6, which added a new hash prefix.


&gt; Due to [aa077e8][1], the default hash-prefix used for `$location` hash-bang
&gt; URLs has changed from the empty string (`&#39;&#39;`) to the bang (`&#39;!&#39;`). If your
&gt; application does not use HTML5 mode or is being run on browsers that
&gt; do not support HTML5 mode, and you have not specified your own
&gt; hash-prefix then client side URLs will now contain a `!` prefix. For
&gt; example, rather than `mydomain.com/#/a/b/c` the URL will become
&gt; `mydomain.com/#!/a/b/c`.

[Source here][1] for more information.

---

*If you want to remove this prefix, add this code to your config:*

    appModule.config([&#39;$locationProvider&#39;, function($locationProvider) {
      $locationProvider.hashPrefix(&#39;&#39;);
    }]);

  [1]: https://docs.angularjs.org/guide/migration#commit-aa077e8

Everyone is proposing to remove the prefix, but you could also simply add a `!` to client-side URLs (if not using HTML5 mode, which you probably do if you&#39;re here).

So in your **client-side** files, update URLS like this:

`#/foo/bar` &gt; `#!/foo/bar`



In Angular 1.6.0, the default hashPrefix has been changed to `!`.
See the [related commit](https://github.com/angular/angular.js/commit/aa077e81129c740041438688dff2e8d20c3d7b52) and the [changelog entry](https://github.com/angular/angular.js/blob/master/CHANGELOG.md#location-due-to).

I&#39;m trying to fill the profile form with data from API. Unfortunately redux-form doesn&#39;t want to cooperate with me in this case. For some reason fields stays empty whatever I do. 

Setting the fixed values instead of values passed from reducer work well for some reason. 

Maybe this is because I&#39;m using **redux-promise** for API calls inside the action creators? How can I live with it and get rid of this. Here is my form component.

    import React, { Component } from &#39;react&#39;;
    import { reduxForm, Field } from &#39;redux-form&#39;;
    import { connect } from &#39;react-redux&#39;;
    import { fetchRoleList, fetchUserData } from &#39;../actions&#39;;
    
    class UserEdit extends Component {
    
        componentWillMount() {
            this.props.fetchRoleList();
            this.props.fetchUserData();
        }
    
        handleEditProfileFormSubmit(formProps) {
            console.log(formProps);
        }
    
        getRoleOptions(selected_id) {
            if (!this.props.profile) {
                return &lt;option&gt;No data&lt;/option&gt;;
            }
    
            return this.props.profile.roles.map(role =&gt; {
                return &lt;option key={role.role_id} value={role.role_id}&gt;{role.name}&lt;/option&gt;;
            });
        }
    
        renderField(props) {
            const { input, placeholder, label, value, type, meta: { touched, error } } = props;
            return (
            &lt;fieldset className={`form-group ${ (touched &amp;&amp; error) ? &#39;has-error&#39; : &#39;&#39; }`}&gt;
                &lt;label&gt;{label}&lt;/label&gt;
                &lt;input className=&quot;form-control&quot; {...input} type={type} placeholder={placeholder} /&gt;
                {touched &amp;&amp; error &amp;&amp; &lt;div className=&quot;error&quot;&gt;{error}&lt;/div&gt;}
            &lt;/fieldset&gt;
            );
        }
    
        renderSelect({ input, placeholder, options, label, type, meta: { touched, error } }) {
            return (
            &lt;fieldset className={`form-group ${ (touched &amp;&amp; error) ? &#39;has-error&#39; : &#39;&#39; }`}&gt;
                &lt;label&gt;{label}&lt;/label&gt;
                &lt;select className=&quot;form-control&quot; {...input}&gt;
                    {options}
                &lt;/select&gt;
                {touched &amp;&amp; error &amp;&amp; &lt;div className=&quot;error&quot;&gt;{error}&lt;/div&gt;}
            &lt;/fieldset&gt;
            );
        }
    
        render() {
            const { handleSubmit } = this.props;
    
            const user = this.props.profile.user;
    
            return (
            &lt;div&gt; {user ? user.email : &#39;&#39;}
                &lt;form onSubmit={handleSubmit(this.handleEditProfileFormSubmit.bind(this))}&gt;
                    &lt;Field name=&quot;email&quot; label=&quot;Email:&quot; component={this.renderField} type=&quot;text&quot; placeholder=&quot;email@gmail.com&quot; className=&quot;form-control&quot;/&gt;
                    &lt;Field name=&quot;name&quot; label=&quot;Name:&quot;  component={this.renderField} type=&quot;text&quot; placeholder=&quot;John Doe&quot; className=&quot;form-control&quot;/&gt;
                    &lt;Field name=&quot;role&quot; label=&quot;Role:&quot; component={this.renderSelect} type=&quot;select&quot; className=&quot;form-control&quot; options={this.getRoleOptions()}/&gt;
                    &lt;button action=&quot;submit&quot; className=&quot;btn btn-primary&quot;&gt;Edit user&lt;/button&gt;
    
                    &lt;Field name=&quot;password&quot; label=&quot;Password:&quot; component={this.renderField} type=&quot;password&quot; className=&quot;form-control&quot;/&gt;
                    &lt;Field name=&quot;passwordConfirm&quot; label=&quot;Confirm Password:&quot; component={this.renderField} type=&quot;password&quot; className=&quot;form-control&quot;/&gt;
                    { this.props.errorMessage
                    &amp;&amp;  &lt;div className=&quot;alert alert-danger&quot;&gt;
                            &lt;strong&gt;Oops!&lt;/strong&gt; {this.props.errorMessage}
                        &lt;/div&gt; }
                    &lt;button action=&quot;submit&quot; className=&quot;btn btn-primary&quot;&gt;Sign up!&lt;/button&gt;
                &lt;/form&gt;
            &lt;/div&gt;
            );
        }
    
    }
        
    let InitializeFromStateForm = reduxForm({
        form: &#39;initializeFromState&#39;
    })(UserEdit);
    
    InitializeFromStateForm = connect(
      state =&gt; ({
        profile: state.profile,
        initialValues: state.profile.user
      }),
      { fetchRoleList, fetchUserData }
    )(InitializeFromStateForm);
    
    export default InitializeFromStateForm;

I do believe action creator will be useful as well:

    export function fetchUserData(user_id) {
        user_id = user_id ? user_id : &#39;&#39;;
    
        const authorization = localStorage.getItem(&#39;token&#39;);
        const request = axios.get(`${ROOT_URL}/user/${user_id}`, {
          headers: { authorization }
        });
    
        return {
            type: FETCH_USER,
            payload: request
        };
    }

Redux-Form initial values from

I have a some Ansible tasks that perform unfortunately long operations - things like running an synchronization operation with an S3 folder.  It&#39;s not always clear if they&#39;re progressing, or just stuck (or the ssh connection has died), so it would be nice to have some sort of progress output displayed.  If the command&#39;s stdout/stderr was directly displayed, I&#39;d see that, but Ansible captures the output.

Piping output back [is a difficult problem for Ansible to solve in its current form](https://github.com/ansible/ansible/issues/3887).  But are there any Ansible tricks I can use to provide some sort of indication that things are still moving?

Current ticket is https://github.com/ansible/ansible/issues/4870

How can I show progress for a long-running Ansible task?

My URLs on an AngularJS project have changed from `localhost:3000/admin#/` to `localhost:3000/admin#!/` since the last time I worked on my project...

Nothing found on the web, does someone know what this is ?


URL hash-bang (#!/) prefix instead of simple hash (#/) in Angular 1.6

<p>My URLs on an AngularJS project have changed from <code>localhost:3000/admin#/</code> to <code>localhost:3000/admin#!/</code> since the last time I worked on my project...</p>
<p>Nothing found on the web, does someone know what this is ?</p>


I&#39;m just starting web development, and so far I know:

&gt; HTML - layout of website
&gt;
&gt; CSS - make it look pretty
&gt;
&gt; JavaScript - functionality

Then what is [jQuery][1], [AngularJS][2], and [Node.js][3]?

After doing a quick search, I found jQuery is a &quot;JavaScript library&quot;, 
AngularJS is &quot;JavaScript-based open-source front-end web application framework&quot;, and Node.js is &quot;JavaScript runtime environment&quot;.

They seem to all be related to JavaScript, so are they new languages? What does &#39;framework/library&#39; mean?

A simple answer would be appreciated. (I just starting web programming, but I am familiar with programming).

  [1]: http://en.wikipedia.org/wiki/JQuery
  [2]: http://en.wikipedia.org/wiki/AngularJS
  [3]: http://en.wikipedia.org/wiki/Node.js


Difference between jQuery vs. AngularJS vs. Node.js

Seem to be having some issues incorporating async/await with .reduce(), like so:

    const data = await bodies.reduce(async(accum, current, index) =&gt; {
      const methodName = methods[index]
      const method = this[methodName]
      if (methodName == &#39;foo&#39;) {
        current.cover = await this.store(current.cover, id)
        console.log(current)
        return {
          ...accum,
          ...current
        }
      }
      return {
        ...accum,
        ...method(current.data)
      }
    }, {})
    console.log(data)

The `data` object is logged *before* the `this.store` completes...

I know you can utilise `Promise.all` with async loops, but does that apply to `.reduce()`?

JavaScript array .reduce with async/await

I&#39;m using a third-party library that has a function that takes functions as arguments. I&#39;m doing some conditional checks to decide whether or not to add a particular function as a parameter and in some cases I don&#39;t want to provide a function. Providing null in that cases throws an error.

I found this code which works, but I don&#39;t fully understand what&#39;s happening.

    compose(__DEV__ ? devTools() : f =&gt; f)

Is `f =&gt; f` equivalent to `() =&gt; {}` an empty anonymous function?

What exactly does the anonymous JavaScript function f =&gt; f do?

I have a React + Webpack/Babel + Node/Express application and I want to deploy it on AWS. 

Would I have to deploy React and Node/Express separately? Or could they be deployed together at once?

How to deploy a React + NodeJS Express application to AWS?

I am getting the following error after upgrading my angular2 packages to the following versions:

 - @angular/common&quot;: &quot;^2.3.1 
 - @angular/compiler&quot;: &quot;^2.3.1
 - @angular/core&quot;: &quot;^2.3.1  
 - @angular/forms&quot;: &quot;^2.3.1
 - @angular/http&quot;: &quot;^2.3.1
 - @angular/platform-browser&quot;: &quot;^2.3.1&quot;
 - @angular/platform-browser-dynamic&quot;: &quot;^2.3.1
 - @angular/platform-server&quot;: &quot;^2.3.1
 - @angular/router&quot;: &quot;^3.3.1

**Error**: `Unable to get property &#39;apply&#39; of undefined or null reference`

[![enter image description here][1]][1]

I am only getting this error in IE11, in Chrome it works fine.

I did some digging and the line that causes the error is in the angular/common module:

    function combine(options) {
      return (_a = ((Object))).assign.apply(_a, [{}].concat(options));
      var _a;
    }

The typescript file:

[@angular/common/src/pipes/intl.ts][2] line 175

    function combine(options: Intl.DateTimeFormatOptions[]): Intl.DateTimeFormatOptions {
      return (&lt;any&gt;Object).assign({}, ...options);
    }

The code that calls the `combine` function is
[@angular/common/src/pipes/intl.ts][3] line 48:

 `&#39;yMMMdjms&#39;: datePartGetterFactory(combine([`


----------
**UPDATE**

It seems that the actual error is that the `.assign` method is not implemented in IE11

  [1]: https://i.stack.imgur.com/xE5EY.png
  [2]: https://github.com/angular/angular/blob/d036165a191d81955e68620eeed5be74a551d4ba/modules/%40angular/common/src/pipes/intl.ts#L175
  [3]: https://github.com/angular/angular/blob/d036165a191d81955e68620eeed5be74a551d4ba/modules/%40angular/common/src/pipes/intl.ts#L48

Angular2 IE11 Unable to get property &#39;apply&#39; of undefined or null reference

I&#39;m having a massive problem with AngularJS routing.

Up until recently everything has been fine with the following route:

    $routeProvider.when(&#39;/album/:albumId&#39;, {
        controller: &#39;albumPageController&#39;,
        templateUrl: &#39;views/album.html&#39;
    });

and using the href:

    &lt;a href=&quot;/#/album/{{album.id}}&quot;&gt;Link&lt;/a&gt;

However, now all of the slashes are being encoded into `%2F`.

So when I click the link, or type `localhost:8000/#/album/1` into the browser, the URL is changed to:

&gt;http://localhost:8000/#%2Falbum%2F1

I&#39;ve tried several things to correct this:

Using ng-href instead of href, 
Not using the first / (ie `href=&quot;#/album/{{album.id}}&quot;`)
Running the app in Homestead localhost (Laravel&#39;s linux vagrant machine) instead of localhost on Windows 10

Any help would be much appreciated!

AngularJS All slashes in URL changed to %2F

I want to print HTML template in angular 2. I had explored about this I got solution in angularjs 1 [Print Html Template in Angularjs 1 ][1]


Any suggestion would be appreciated 

  [1]: http://embed.plnkr.co/pzIfYGIOt7L8eFSJxWlu/

Print Html template in Angular 2 (ng-print in Angular 2)

I am trying to integrate Socket.io with Angular and I&#39;m having difficulties making a connection from the client-side to the server. I&#39;ve looked through other related questions but my issue is happening locally, so there&#39;s no web server in the middle.

This is what my server code looks like:

&lt;!-- language: lang-javascript --&gt;

    const app = express();
    const server = http.createServer(app);
    const io = require(&#39;socket.io&#39;).listen(server);

    io.on(&#39;connection&#39;, function(socket) {
      socket.emit(&#39;greet&#39;, { hello: &#39;Hey, Mr.Client!&#39; });
  
      socket.on(&#39;respond&#39;, function(data) {
        console.log(data);
      });
      socket.on(&#39;disconnect&#39;, function() {
        console.log(&#39;Socket disconnected&#39;);
      });
    });

I&#39;m loading the client side JavaScript files using Grunt in the following order:

    dist: {
        src: [
            public/bower_components/angular/angular.min.js,
            ...
            public/bower_components/socket.io-client/dist/socket.io.min.js,
            public/bower_components/angular-socket-io/socket.min.js,
            ...
        ]
    }


Then in my controller:

&lt;!-- language: lang-javascript --&gt;

    function MyController($scope) {

        let socket = io.connect(window.location.href);
        socket.connect(&#39;http://localhost:3000&#39;);
        socket.on(&#39;greet&#39;, function(data) {
          console.log(data);
          socket.emit(&#39;respond&#39;, { message: &#39;Hello to you too, Mr.Server!&#39; });
        });

        ...
    }

Before actually using the `btford/angular-socket-io` library, I want to make sure that I can get a connection correctly, but I get the following error in the console:

[![socket io connection error message][1]][1]

The interesting thing is that if I restart the Node.js server process, it does manage to send the message but using polling instead of websockets.

[![after restart][2]][2]

[![polling message][3]][3]

I tried all sorts of different options in the socket.connect call, but nothing worked.

Any help would be appreciated.

----------

UPDATE (30/12/2016):
-----------------

I just realized that websockets is working partially. I see a 101 Switching Protocols request in the Chrome developer console. However the only frames I see there are the engine.io protocol packets (ping, pong). However my application socket messages still fall back to polling for some reason...

[![engine.io packets][4]][4] 


  [1]: https://i.stack.imgur.com/dpkwe.png
  [2]: https://i.stack.imgur.com/tImrE.png
  [3]: https://i.stack.imgur.com/mxZjR.png
  [4]: https://i.stack.imgur.com/woDCZ.png

WebSocket connection failed: Error during WebSocket handshake: Unexpected response code: 400

I am trying to send the request from one localhost port to the another. I am using **angularjs on the frontend and node on the backend**.

Since it is **CORS** request, In node.js, i am using 

    res.header(&#39;Access-Control-Allow-Origin&#39;, &#39;*&#39;);
    res.header(&#39;Access-Control-Allow-Methods&#39;, &#39;GET, POST, PUT, DELETE, PATCH&#39;);
    res.header(&#39;Access-Control-Allow-Headers&#39;, &#39;Origin, X-Requested-With, Content-Type, Accept, Authorization&#39;);

and in the angular.js service file, I am using

    return {
        getValues: $resource(endpoint + &#39;/admin/getvalues&#39;, null, {
            &#39;get&#39;: {
                 method: &#39;GET&#39;,
                 headers:{&#39;Authorization&#39;:&#39;Bearer&#39;+&#39; &#39;+ $localStorage.token}
                 }
         }),
    }

I am getting the following error

**Request header field Authorization is not allowed by Access-Control-Allow-Headers in preflight response.**


Please help!



   

CORS error :Request header field Authorization is not allowed by Access-Control-Allow-Headers in preflight response

I need to get my current route without params in Angular 2, I found a way to get the current route with params as follows:
       
     this.router.url

and then split it:

     this.router.url.split(&#39;;&#39;)[0]

But this looks as workaround, I think there should be better way?

Get current route without parameters

I am building a Flutter app, and I&#39;d like to open a URL into a web browser or browser window (in response to a button tap). How can I do this?

How do I open a web browser (URL) from my Flutter code?

I have an url like:  
`http://abc.hostname.com/somethings/anything/`  

I want to get:  
`hostname.com`  

What module can I use to accomplish this?  
I want to use the same module and method in python2.


Extract domain from URL in python

I&#39;m trying to import fb-login function and there are some features which need to be inspected by facebook such as job status, education, etc.
And they&#39;re saying that they requires privacy policy URL. So, I made a facebook page, which I will use as a landing page for my app, and wrote down the Privacy Policy to the Note.

After that, I copied the note&#39;s url and pasted it to the Privacy Policy URL box. I tried to save and proceed, but than error message comes up, 

&gt; Facebook URL: Facebook URL cannot be crawled

So, my question is this: Is it unavailable to use facebook page to submit the privacy policy URL? This is my first time importing fb-login, so I just don&#39;t know what should I do and what shouldn&#39;t I do.

How should I deal with the Facebook app privacy policy URL in developers page?

I have angular application where i want to pass plus sign **+** in query string like:

    http://localhost:3000/page?name=xyz+manwal

When I am hitting this URL its converting to:

    http://localhost:3000/page?name=xyz%20manwal

Where **%20** refer to space ` `. How can I prevent this conversion? 

Content Type	Original Author	Original Content on Stackoverflow
Question	Pierre C.	View Question on Stackoverflow
Solution 1 - Javascript	Mistalis	View Answer on Stackoverflow
Solution 2 - Javascript	Overdrivr	View Answer on Stackoverflow
Solution 3 - Javascript	DevDig	View Answer on Stackoverflow

URL hash-bang (#!/) prefix instead of simple hash (#/) in Angular 1.6

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

Solution 3 - Javascript

How can I show progress for a long-running Ansible task?

Redux-Form initial values from

Attributions