The default HTML editor (for static HTML) doesn&#39;t have a design view. To set the default editor to the Web forms editor which does have a design view, 


 1. Right click any HTML file in the Solution Explorer in Visual Studio and click on `Open with`
 2. Select the `HTML (web forms) editor`
 3. Click on `Set as default`
 4. Click on the `OK` button

Once you have done that, all you need to do is click on `design` or `split` view as shown below:  
  
[![Screenshot showing the location of said options][1]][1]


  [1]: http://i.stack.imgur.com/gWWfJ.png

Another way of setting the default to the HTML web forms editor is:

 1. At the top menu in Visual Studio go to `File` &gt; `New` &gt; `File`
 2. Select `HTML Page`
 3. In the lower right corner of the New File dialog on the `Open` button there is a down arrow
 4. Click it and you should see an option `Open With`
 5. Select `HTML (Web Forms) Editor`
 6. Click `Set as Default`
 7. Press `OK`

![Screenshot showing how to get to the &quot;Open With&quot; dialog box when creating a new file.][1]


  [1]: https://i.stack.imgur.com/3N5uN.jpg

Go to [Tools, Options], section &quot;Web Forms Designer&quot; and enable the option &quot;Enable Web Forms Designer&quot;. That should give you the Design and Split option again.

The solution of creating a new HTML file with HTML (Web Forms) Designer worked for that file but not for other, individual HTML files that I wanted to edit. 

I did find the Open With option in the Open File dialogue and was able to select the HTML (Web Forms) Editor there. Having clicked the &quot;Set as Default&quot; option in that window, VS then remembered to use that editor when I opened other HTML files.

I don&#39;t know what&#39;s the deal but I am stuck following some stackoverflow solutions which gets nowhere. Can you please help me on this?
  

      Monas-MacBook-Pro:CS764 mona$ sudo python get-pip.py
        The directory &#39;/Users/mona/Library/Caches/pip/http&#39; or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo&#39;s -H flag.
        The directory &#39;/Users/mona/Library/Caches/pip/http&#39; or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo&#39;s -H flag.
        /tmp/tmpbSjX8k/pip.zip/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
        Collecting pip
          Downloading pip-7.1.0-py2.py3-none-any.whl (1.1MB)
            100% |████████████████████████████████| 1.1MB 181kB/s 
        Installing collected packages: pip
          Found existing installation: pip 1.4.1
            Uninstalling pip-1.4.1:
              Successfully uninstalled pip-1.4.1
        Successfully installed pip-7.1.0
        Monas-MacBook-Pro:CS764 mona$ pip --version
        -bash: /usr/local/bin/pip: /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory



pip installation /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory

I&#39;d like to create my own error class in TypeScript, extending core `Error` to provide better error handling and customized reporting. For example, I want to create an `HttpRequestError` class with url, response and body passed into its constructor, which reponds with *Http request to http://example.com failed with status code 500 and message: Something went wrong* and proper stack trace.  

**How to extend core Error class in TypeScript**? I&#39;ve already found post in SO: https://stackoverflow.com/questions/12915412/how-do-i-extend-a-host-object-e-g-error-in-typescript but this solution doesn&#39;t work for me. I use TypeScript 1.5.3  

Any ideas?


Custom error class in TypeScript

Where is the Visual Studio HTML Designer? I see that there are options for the HTML Designer but I can&#39;t open it.
[![There is a HTML Designer options node!][1]][1]

So I just want to ask why I can&#39;t find the designer and how do I open it. When I create an HTML file it just goes to the HTML code.

  [1]: http://i.stack.imgur.com/KNOow.png

Where is the visual studio HTML Designer?

<p>Where is the Visual Studio HTML Designer? I see that there are options for the HTML Designer but I can't open it.
<a href="http://i.stack.imgur.com/KNOow.png" target="_blank" rel="noopener noreferrer"><img src="http://i.stack.imgur.com/KNOow.png" alt="There is a HTML Designer options node!"></a></p>
<p>So I just want to ask why I can't find the designer and how do I open it. When I create an HTML file it just goes to the HTML code.</p>


I&#39;m interested in using `MutationObserver` to detect if a certain HTML element is added anywhere in an HTML page. For example&#39;s sake, I&#39;ll say that I want to detect if any `&lt;li&gt;`&#39;s are added anywhere in the DOM.

All the `MutationObserver` examples I&#39;ve seen so far only detect if a node is added to a particular container. For example:

some HTML

    &lt;body&gt;
    
      ...
    
      &lt;ul id=&#39;my-list&#39;&gt;&lt;/ul&gt;
    
      ...
    
    &lt;/body&gt;

`MutationObserver` definition

    var container = document.querySelector(&#39;ul#my-list&#39;);

    var observer = new MutationObserver(function(mutations){
      // Do something here
    });
   
    observer.observe(container, {
      childList: true,
      attributes: true,
      characterData: true,
      subtree: true,
      attributeOldValue: true,
      characterDataOldValue: true
    });

So in this example, the `MutationObserver` is setup to watch a very certain container (`ul#my-list`) to see if any `&lt;li&gt;`&#39;s are appended to it.

Is it a problem if I wanted to be **less specific**, and watch for `&lt;li&gt;`&#39;s over the entire HTML body like this:

    var container = document.querySelector(&#39;body&#39;);

I know it works in the basic examples I&#39;ve setup for myself... But is it not advised to do this? Is this going to result in poor performance? And if so, how would I detect and measure that performance issue?

I figured maybe there was a reason that all the `MutationObserver` examples are so specific with their targeted container... but I&#39;m not sure.

Performance of MutationObserver to detect nodes in entire DOM

I have the following html5 input element:

    &lt;input type=&quot;number&quot;&gt;

Why does this input allow for the character &#39;e&#39; to be entered in the input field? No other alphabet character is able to be entered (as expected)

Using chrome v. 44.0.2403.107

Example below to see what I mean. 

&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-html --&gt;

    &lt;input type=&quot;number&quot;&gt;

&lt;!-- end snippet --&gt;



Why does the html input with type &quot;number&quot; allow the letter &#39;e&#39; to be entered in the field?

I have two divs with a height of 90%, but the display is different. 

I have tried to put an outer div around them, but that has not helped. Also, it&#39;s the same on Firefox, Chrome, Opera, &amp; Safari.

Can someone explain why I am having this problem?

Below is my code:	

    &lt;div style=&quot;height: 90%&quot;&gt;
    	&lt;div ng-controller=&quot;TabsDataCtrl&quot; style=&quot;width: 20%; float: left;&quot;&gt;
            &lt;tabset&gt;
                &lt;tab id=&quot;tab1&quot; heading=&quot;{{tabs[0].title}}&quot; ng-click=&quot;getContent(0)&quot; active=&quot;tabs[0].active&quot;
                   disabled=&quot;tabs[0].disabled&quot;&gt;
                &lt;/tab&gt;
    
    
                &lt;tab id=&quot;tab2&quot; heading=&quot;{{tabs[2].title}}&quot; ng-click=&quot;getContent(2)&quot; active=&quot;tabs[2].active&quot;
                     disabled=&quot;tabs[2].disabled&quot;&gt;
                &lt;/tab&gt;
            &lt;/tabset&gt;
        &lt;/div&gt;
    
        &lt;div id=&quot;leaflet_map&quot; ng-controller=&quot;iPortMapJobController&quot;&gt;
            &lt;leaflet center=&quot;center&quot; markers=&quot;markers&quot; layers=&quot;layers&quot; width=&quot;78%&quot;&gt;&lt;/leaflet&gt;
        &lt;/div&gt;
    &lt;/div&gt;
	
  [1]: http://i.stack.imgur.com/VA9D8.png

Why is percentage height not working on my div?

I am putting together an R Markdown HTML page for some new R users at my work to give them an introduction and walk them through some simple demos.

While showing off things like `head` and `tail`, it ends up looking messy and long because it prints out each output one after the other. I would like them as long as other sections of my .Rmd to be split into two columns.

In my research, I came across this [question](https://stackoverflow.com/questions/19237190/2-column-report-in-r-markdown-render-html-aside-data-frame). There was some discussion of workarounds with HTML code I did not understand.

I did try including:
```
&lt;div class=&quot;columns-2&quot;&gt;   
&lt;/div&gt;
```
from the official `rmarkdown` documentation, but it did not have any effect.

As I was ready to give up, there was a comment on the Stack Overflow question by @Molx saying that you can separate columns with `***`, but it did not give any further explanation. I tried it out in a few ways: I included the `***` in the middle of my R code chunk, I separated my R code chunks and put the `***` between the two. When I did the latter, the `***` simply became a horizontal rule and did nothing with columns.

I am hoping to avoid tables and CSS if possible.

How to export RMarkdown file to HTML document with two columns?

I&#39;ve looked around a lot, and I understand that there&#39;s a lot of ways to detect internet explorer.

My problem is this: I have an area on my HTML document, that when clicked, calls a JavaScript function that is incompatible with internet explorer of any kind.
I want to detect if IE is being used, and if so, set the variable to true. 

The problem is, I am writing my code out of Notepad++, and when I run the HTML code in browser, none of the methods for detecting IE work. I think the problem is that I am running it out of Notepad++. I need to be able to detect IE, so that based on the variable, I can disable that area of the site. I have tried this:

    var isIE10 = false;

    if (navigator.userAgent.indexOf(&quot;MSIE 10&quot;) &gt; -1) {
        // this is internet explorer 10
        isIE10 = true;
       window.alert(isIE10);
    }

    var isIE = (navigator.userAgent.indexOf(&quot;MSIE&quot;) != -1);

    if(isIE){
        if(!isIE10){
        window.location = &#39;pages/core/ie.htm&#39;;
        }
    }
but it doesn&#39;t work. How can I detect IE out of Notepad++? That&#39;s what I&#39;m testing the HTML out of, but I need a method that&#39;ll work with that.

# edit  

I noticed someone has marked this as a duplicate, and that is understandable. I suppose I was not clear.  I cannot use a JQuery answer, so this is not a duplicate as I am asking for a vanilla JS answer.

# Edit #2

Is there also a way to detect the Microsoft Edge browser?

How can I detect Internet Explorer (IE) and Microsoft Edge using JavaScript?

I just upgraded from Visual Studio 2013 to 2015 and now I am having trouble with breakpoints.

It&#39;s a hit or a miss where break points will actually work and if I set one while debugging I get the error:

&gt;The breakpoint failed to bind.

Any help would be appreciated. I am about ready to give up on 2015 and go back.

Breakpoint Failed to Bind - Visual Studio 2015

The &quot;Compile on save&quot; feature isn&#39;t working for me after upgrading to Visual Studio 2015.  When I make a change to a `.ts` file in my project and save, the status bar at the bottom of the IDE says `Output(s) generated successfully`, but the generated `.js` file doesn&#39;t change.

Here&#39;s what I&#39;ve tried:

- adding the following to the root `&lt;Project&gt;` element in my `.csproj`:

        &lt;PropertyGroup&gt;
            &lt;TypeScriptCompileOnSaveEnabled&gt;True&lt;/TypeScriptCompileOnSaveEnabled&gt;
        &lt;/PropertyGroup&gt;


- checking and unchecking the &quot;Automatically compile TypeScript files which are not part of a project&quot; option in `Tools -&gt; Options -&gt; TypeScript -&gt; Project`:

 [![enter image description here][1]][1]

- double checking to make sure &quot;Compile on save&quot; is checked in my project&#39;s TypeScript Build properties:

 [![enter image description here][2]][2]

What am I missing?

As a side note, the TypeScript compilation step does work as expected when triggered by a regular build.

  [1]: http://i.stack.imgur.com/j6QCM.png
  [2]: http://i.stack.imgur.com/QSWMo.png

TypeScript &quot;Compile on save&quot; feature not working in Visual Studio 2015

When I open a project with a package.json in Visual Studio 2015, an npm install is automatically started, and VS is unresponsive until the install is completed.

I would much rather prefer running npm install myself from the command line; how can I stop Visual Studio from doing it?

How can I disable NPM package restore in Visual Studio 2015?

I just installed Visual Studio 2015 and opened my asp .net project that I was working on. I&#39;m receiving many errors (all exactly the same) as below:

&gt;Error	CS0103	The name &#39;__o&#39; does not exist in the current context	

Well actually I don&#39;t have any variables named __o and the code works like a charm (error is invalid) but what bothers me is that I&#39;m not able to see when my code really has an error as it goes somewhere in this list and I should check the whole list.

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/DEW6w.png

The name &#39;__o&#39; does not exist in the current context

When debugging a C# application in Visual Studio 2015, **Diagnostic Tools** starts automatically. I unchecked both checkboxes in **Select Tools**, but it doesn&#39;t seem to completely disable it.

How do I turn it off (and on again later)?

How to disable Diagnostic Tools?

How do I hide the toolbar that shows browser icons floating above my code?

I&#39;m using WebStorm 64 bit, version 10.0.4, on Windows 8.1 x64.

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/ofWG2.png

hide WebStorm toolbar showing browser icons

I am looking for an IDE that does atleast some of the following

 - Code completion when typing variable names and possible
   functions after pressing `.`
 - Show a functions signature and docs
 - Navigate to the function/variable/module&#39;s definition

It would be nice if it could also

 - Warn about errors
 - Code generation
 - Scaffold basic projects

Good IDE for Elixir

**NOTE** The keyword here is &quot;default&quot;.  I know I can hit escape and the default behavior gets aborted.  I don&#39;t want to hit the escape key every time the IDE thinks it knows what I want.  I didn&#39;t have to do this in 2013.

**ADDENDUM 2** It seems I&#39;m still having difficulty communicating what I&#39;m after here.  What I want to happen is _nothing_ when I press the space bar... I just want a space character to show up on my screen.  The only time I want the IDE to actually insert a suggestion is when I hit the tab bar.  I hope that&#39;s clearer?

This is driving me nuts.  2013 and before allowed you to set completion characters (maybe that was resharper?) but in 2015 I see no way to stop the default behavior of autocomplete.

For example, say I have a class `Foo`, but I don&#39;t have the namespace specified already, yet I have a class `FooBar` in one of the specified namespaces, if I type:

    public void DoSomething(Foo// &lt;-- then a space)

...it automatically puts `FooBar`.  How the heck do I turn off this behavior?

I should mention that I still want AutoComplete, just on tab though.

Stop default Autocomplete behavior when hitting spacebar in Visual Studio 2015

After upgrading to Xcode 7, to support iOS 9, i have hundreds of fix-it errors and warnings. Is there a one push button to make Xcode run them all rather then individual going through them one by one?

Run all of Xcode&#39;s &quot;Fix-it&quot;s at once

I&#39;m running on Arch Linux, on an i7-5930k 6 core CPU and 64GB of DDR4 RAM, and I&#39;m using IntelliJ IDEA 14.

IDEA was working just fine for me several days ago, but one day, suddenly, it began hanging after opening a project, during the &quot;Indexing&quot; stage. I did not update IDEA and nothing changed about my projects. The IDE&#39;s UI hangs after it opens the project, with just a tiny little sliver of the progress bar for &quot;Indexing&quot; complete. Every 5-10 minutes or so it unfreezes and the progress bar crawls forward a little bit, before the IDE freezes again for another few minutes. This happens repeatedly for anywhere between 15 minutes and an hour, until it is finally finished indexing, at which point it hangs for another 5-10 minutes doing nothing, before it finally unlocks and allows me to develop.

While this is happening, my system is fairly unresponsive - Firefox tabs take a long time to switch, and scrolling in them is laggy. Opening a new terminal window takes a long time. Switching windows in general takes awhile. In `htop`, one of my CPU cores is loaded at 100% while the rest have a normal load, and about 6GB of RAM is used (fairly normal load when this system is idle.)

Things I have tried that have not helped:

- Delete caches folder
- Delete entire ~/.IntelliJIDEA14 folder
- Reinstall IntelliJ package
- Download IntelliJ manually from JetBrains&#39; site and run it from my Downloads folder (to see if there was something wrong with the Arch AUR package)
- Configure IntelliJ to use my system JVM and Maven for importing instead of its embedded tools
- Opening multiple different projects (not just the one I initially experienced the issue on.)

This issue is really hurting my workflow, if anybody has any solution to this I would be very greatful.

Content Type	Original Author	Original Content on Stackoverflow
Question	Sweeper	View Question on Stackoverflow
Solution 1 - Html	DividedByZero	View Answer on Stackoverflow
Solution 2 - Html	cflyer	View Answer on Stackoverflow
Solution 3 - Html	user5470600	View Answer on Stackoverflow
Solution 4 - Html	TimSmith-Aardwolf	View Answer on Stackoverflow

Where is the visual studio HTML Designer?

Html Problem Overview

Html Solutions

Solution 1 - Html

Solution 2 - Html

Solution 3 - Html

Solution 4 - Html

Custom error class in TypeScript

pip installation /usr/local/opt/python/bin/python2.7: bad interpreter: No such file or directory

Attributions