`replaceState()` will *change* the URL in the browser (ie. pressing the back button won&#39;t take you back)

`pushState()` will change the URL, and keep the old one in the browser history (ie. pressing the back button will take you back)

From your link

&gt; history.replaceState() operates exactly like history.pushState()
&gt; except that replaceState() modifies the current history entry instead
&gt; of creating a new one.
&gt; 
&gt; replaceState() is particularly useful when you want to update the
&gt; state object or URL of the current history entry in response to some
&gt; user action.

If you simply want to update history entry, use `replaceState()` otherwise use `pushState()`, which will keep the old entry and create a new one. They&#39;re similar but both have different effects so it depends on whether or not you want to replace or create new history entries.

Think of it like I&#39;m dealing out a deck of cards by putting one card on top of the other (face up) and you can only take the top card in the pile (i.e. the last card I dealt). Let&#39;s say I put a Jack of Hearts on the pile. Now for the next card if I use `replaceState`, so I take that Jack of Hearts off and put the next card on. The number of cards is the same since we just replaced the top card. If I had used `pushState` instead, I would&#39;ve put the next card on top of the Jack of Hearts (so now both exist in the pile and the pile is one card higher).

 Swap the cards in the analogy with URLs and that&#39;s how the URL history is modified.



I have the following commands in a shell script. I want to convert these lines into a windows cmd file. Can anyone provide input on what is the equivalent for &quot;rm&quot; and &quot;mv&quot; in a windows cmd file?

    rm -f ${BUILD_ID}/${BUILD_ASIC}*rampatch*
    mv ${BUILD_ID}/${BUILD_ASIC}*rampatch* ${BUILD_ID}/emul/

Equivalent of rm and mv in windows .cmd

I want to create a private variable but I cannot.

Here is my code:

&lt;!-- language: lang-dart --&gt;

    void main() {
      var b = new B();
      b.testB();    
    }
    
    class A {
      int _private = 0;
    
      testA() {
        print(&#39;int value: $_private&#39;);
        _private = 5;
      }
    }
    
    class B extends A {
      String _private;
    
      testB() {
        _private = &#39;Hello&#39;;
        print(&#39;String value: $_private&#39;);
        testA();
        print(&#39;String value: $_private&#39;);
      }
    }

When I run this code, I get the following result:

    String value: Hello
    int value: Hello
    Breaking on exception: type &#39;int&#39; is not a subtype of type &#39;String&#39; of &#39;value&#39;.

Also I not get any error or warnings when editing this source code.

How can I create a private variable in Dart?

How to create private variables in Dart?

I&#39;ve been reading and searching for advantages / disadvantages between `replaceState()` &amp; `pushState()`. 
Read also Mozilla&#39;s [**article**][1], and this [**interesting**][2] test but still is unclear to me the differences.

Any one care to explain in what they differ?


  [1]: https://developer.mozilla.org/en-US/docs/Web/Guide/DOM/Manipulating_the_browser_history?redirectlocale=en-US&amp;redirectslug=DOM/Manipulating_the_browser_history
  [2]: http://webpro.host.adobe.com/people/jblas/research/pushstate/pushstate.html

replaceState() vs pushState()

I've been reading and searching for advantages / disadvantages between <code>replaceState()</code> &#x26; <code>pushState()</code>.
Read also Mozilla's <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/DOM/Manipulating_the_browser_history?redirectlocale=en-US&#x26;redirectslug=DOM/Manipulating_the_browser_history" target="_blank" rel="noopener noreferrer">article</a>, and this <a href="http://webpro.host.adobe.com/people/jblas/research/pushstate/pushstate.html" target="_blank" rel="noopener noreferrer">interesting</a> test but still is unclear to me the differences.
Any one care to explain in what they differ?

I can&#39;t access any cookie from JavaScript. I need to read some value and send them via JSON for my custom checks.

I&#39;ve tried to access cookies from JS, like it was described at:

 - http://www.w3schools.com/js/js_cookies.asp
 - https://stackoverflow.com/questions/10730362/javascript-get-cookie-by-name

As you can see at the code, it&#39;s seen as clear as a crystal the next:

    var c_value = document.cookie;

When I&#39;m trying to access the `document.cookie` value from the Chrome&#39;s web-debugger, I see only the empty string at the **Watch expressions**:

So I can&#39;t read cookies value, which I need.

I&#39;ve checked the cookie name, which I&#39;m sending to get an associated value IS correct.
Also, I&#39;m using the **W3Schools** source code for getting cookies, if you&#39;re interested (but from the 2nd link, the technique is similar).

How can I fix my issue?

Can&#39;t access cookies from document.cookie in JS, but browser shows cookies exist

I would like to have the ability to let users submit arbitrary JavaScript code, which is then sent to a Node.JS server and safely executed before the output is sent back to multiple clients (as JSON). The `eval` function comes to mind, but I know this has multiple security concerns (the user submitted code would be able to access Node&#39;s File API, etc). I have seen some projects like Microsoft Web Sandbox and Google Caja which allow execution of sanitized markup and script (for embedding third-party ads on websites), but it seems that these are client-side tools and I&#39;m not sure if they can be safely used within Node.

Is there a standard way to sandbox and execute non-trusted JavaScript in Node, getting the output. Is it a mistake to try and do this server-side?

**EDIT:** It&#39;s not important that the user be able to leverage the full capabilities of JavaScript, in fact it would be preferable to be able to pick and choose which APIs would be provided to the user code.

**EDIT:** I am going to go ahead and update with what I found. This Sandcastle module ([**`bcoe/sandcastle`**](https://github.com/bcoe/sandcastle)) seems to aim to do what I have in mind. Not sure how secure it is, but since I this is not for anything too important I think I&#39;ll if try it. I&#39;ll add my own answer if I&#39;m able to successfully do this.

Safely sandbox and execute user submitted JavaScript?

I have a node.js server listening to port 4000, the URL to access the service is something like this:

   &gt;http://42.12.251.830:4000

I bought a domain name

&gt;www.mydomain.com

How can I assign it to my server? First I used forwarding, but then I could not use location.hash anymore to add a chat channel to the URL. Then I used something like Header-Redirect. Now the service is reachable under mydomain.com , but not under www.mydomain.com. Moreover the domain name is not shown in the browser window. For my chat channel I need something like this:


&gt;www.mydomain.com/#238husd4



How to assign a domain name to node.js server?

I was wondering - what&#39;s the difference between JavaScript objects, classes and functions?
Am I right in thinking that classes and functions are types of objects?

And what distinguishes a class from a function? Or are they really the same thing, just the term for them changes according to how they are used?

    function func() { alert(&#39;foo&#39;); } // a function
    func(); // call the function - alerts &#39;foo&#39;
    var func2 = function () { alert(&#39;hello&#39;); } // acts the same way as &#39;func&#39; surely?
    func2(); // alerts &#39;hello&#39;
    
    var Class = function() { alert(&#39;bar&#39;); }; // a class
    var c = new Class(); // an istance of a class - alerts &#39;bar&#39;

Sure, classes have methods and properties and can be instantiated - but then, I could do the same with any old function - or not?

Object vs Class vs Function

I need the browser to download the image files just as it does while clicking on an Excel sheet.

Is there a way to do this using client-side programming only?

    &lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot;&gt;
        &lt;head&gt;
            &lt;title&gt;&lt;/title&gt;
            &lt;script type=&quot;text/javascript&quot; src=&quot;Scripts/jquery-1.10.2.js&quot;&gt;
            $(document).ready(function () {
                $(&quot;*&quot;).click(function () {
                    $(&quot;p&quot;).hide();
                });
            });
            &lt;/script&gt;
        &lt;/head&gt;

        &lt;script type=&quot;text/javascript&quot;&gt;
            document.onclick = function (e) {
                e = e || window.event;
                var element = e.target || e.srcElement;
                if (element.innerHTML == &quot;Image&quot;) {
                    //someFunction(element.href);
                    var name = element.nameProp;
                    var address = element.href;
                    saveImageAs1(element.nameProp, element.href);
                    return false; // Prevent default action and stop event propagation
                }
                else
                    return true;
            };

            function saveImageAs1(name, adress) {
                if (confirm(&#39;you wanna save this image?&#39;)) {
                    window.win = open(adress);
                    //response.redirect(&quot;~/testpage.html&quot;);
                    setTimeout(&#39;win.document.execCommand(&quot;SaveAs&quot;)&#39;, 100);
                    setTimeout(&#39;win.close()&#39;, 500);
                }
            }
        &lt;/script&gt;

        &lt;body&gt;
            &lt;form id=&quot;form1&quot; runat=&quot;server&quot;&gt;
                &lt;div&gt;
                    &lt;p&gt;
                        &lt;a href=&quot;http://localhost:55298/SaveImage/demo/Sample2.xlsx&quot; target=&quot;_blank&quot;&gt;Excel&lt;/a&gt;&lt;br /&gt;
                        &lt;a href=&quot;http://localhost:55298/SaveImage/demo/abc.jpg&quot; id=&quot;abc&quot;&gt;Image&lt;/a&gt;
                    &lt;/p&gt;
                &lt;/div&gt;
            &lt;/form&gt;
        &lt;/body&gt;
    &lt;/html&gt;

How should it work in case of downloading an Excel sheet (what browsers do)?


Force browser to download image files on click

Is it possible to develop a C++ program while using HTML and CSS for the user interface? I know about programming with Javascript using a Webkit container, but I am really interested in C++ development.

I felt in love with C# WPF when I developed under Windows, but now I moved to Linux and I haven&#39;t found a good tool for using markup for interfaces. For this, I would like to mix HTML and CSS, which are very lightweight and easy to use, with C++ code, with something like WPF.

Oh, one more thing: I&#39;m looking for desktop development, not web.

How to build native C++ apps with HTML/CSS UI?

It seems like the `mailto` links we&#39;re embedding in our website fail to do anything in Chrome, though they work in Firefox.

Simple example here: http://jsfiddle.net/wAPNH/

    &lt;a href=&#39;mailto:test@test.com&#39;&gt;hi this is a test&lt;/a&gt;

Do we need to do something special to enable mail links in Chrome?

Mailto links do nothing in Chrome but work in Firefox?

I&#39;m not sure the best way to ask/search for this question:

When you click on an anchor link, it brings you to that section of the page with the linked-to area now at the VERY TOP of the page. I would like the anchor link to send me to that part of the page, but I would like some space at the top. As in, I don&#39;t want it to send me to the linked-to part with it at the VERY TOP, I would like 100 or so pixels of space there.

Does this make sense? Is this possible? 


Edited to show code - it&#39;s just an anchor tag:

    &lt;a href=&quot;#anchor&quot;&gt;Click me!&lt;/a&gt;
    
    &lt;p id=&quot;anchor&quot;&gt;I should be 100px below where I currently am!&lt;/p&gt;

Make anchor link go some pixels above where it&#39;s linked to

If I have a radio group with buttons:

![Image 1][1]

... how can I show only images in the select option instead of the buttons, e.g.

![enter image description here][2]


  [1]: http://i.stack.imgur.com/Uow4r.png
  [2]: http://i.stack.imgur.com/TUbSx.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Rikard	View Question on Stackoverflow
Solution 1 - Javascript	user1318194	View Answer on Stackoverflow
Solution 2 - Javascript	keyboardP	View Answer on Stackoverflow

replaceState() vs pushState()

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

How to create private variables in Dart?

Equivalent of rm and mv in windows .cmd

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