May be:

    dateTo = moment().format(&#39;YYYY-MM-DD&#39;);
    dateFrom = moment().subtract(7,&#39;d&#39;).format(&#39;YYYY-MM-DD&#39;);

[moment#subtract](https://momentjs.com/docs/#/manipulating/subtract/)

The date object, when casted, is in milliseconds. so:


    dateFrom = moment(Date.now() - 7 * 24 * 3600 * 1000).format(&#39;YYYY-MM-DD&#39;); 

You can use:
```
moment().subtract(1,&#39;w&#39;)
```
to subtract one week (7 days) from the current date.

```
NOTE:
1. w for week
2. d for days
3. m for month
4. y for year
```

for a date picker y use     

     first_day: moment()
        .subtract(5, &quot;day&quot;)
        .endOf(&quot;day&quot;)
        .toDate(),
      last_day: moment()
        .endOf(&quot;day&quot;)
        .toDate(),

The question is outdated so does the solution.
 
Using Moment v2.29 +

You can add or subtract days using following ways

    moment().day(-7); // last Sunday (0 - 7)
    moment().day(0); // this Sunday (0)
    moment().day(7); // next Sunday (0 + 7)
    moment().day(10); // next Wednesday (3 + 7)
    moment().day(24); // 3 Wednesdays from now (3 + 7 + 7 + 7)

For more please refer the official documentation https://momentjs.com/docs/#/get-set/

**Easiest method to get last 7th day**

    moment().subtract(7, &#39;days&#39;).startOf(&#39;day&#39;).format(&#39;YYYY-MM-DD HH:mm:ss&#39;)

When using an embedded framework (dyld) in Xcode 6.0.1 with deployment target less that iOS 8 I get:

 - Build is successful
 - Runtime library loading error

Error:

    dyld: Library not loaded: @rpath/ObjectiveLyricsTouch2.framework/ObjectiveLyricsTouch2        
    Referenced from: /private/var/mobile/Containers/Bundle/Application/DC65ACA9-98E5-46CD-95F8-829D3416F6C0/musiXmatch.app/musiXmatch
    Reason: image not found
    (lldb) 


Xcode 6 and Embedded Frameworks only supported in iOS8

One of the things I appreciate the most about Backbone.js is how simple and elegant inheritance works. I&#39;m starting to get to grips with React, and can&#39;t really find anything in react that resembles this Backbone code

    var Vehicle = Backbone.View.extend({
    	methodA: function() { // ... }
    	methodB: function() { // ... }
    	methodC: function() { // ... }
    });
    
    var Airplane = Vehicle.extend({
    	methodC: function() {
    		// Overwrite methodC from super
    	}
    });

In react we [have mixins](http://facebook.github.io/react/docs/reusable-components.html#mixins), and using those we could get somewhat close to the above example if we went like this

    var vehicleMethods = {
        methodA: function() { // ... }
        methodB: function() { // ... }
    }
    
    var Vehicle = React.createClass({
        mixins: [vehicleMethods]
        methodC: function() { 
            // Define method C for vehicle
        }
    });
    
    var Airplane = React.createClass({
        mixins: [vehicleMethods]
        methodC: function() {
            // Define method C again for airplane
        }
    });

This is less repetitive than defining the same stuff over and over again, but it doesn&#39;t seem to be nearly as flexible as the Backbone way. For instance, I get an error if I try to redefine/overwrite a method that exists in one of my mixins. On top of that, the React.js way is more code for me to write.

There is some incredibly clever stuff in react, and it feels like this is more the case of me not getting how to properly do this, than it feels like a feature missing from React.

Any pointers are greatly appreciated.


Extending React.js components

I would like to subtract 7 days from current date to get formatted date YYYY-MM-DD using moment.js library.

**I tried to do by this way:**

        dateTo = moment(new Date()).format(&#39;YYYY-MM-DD&#39;);
        dateFrom = moment(new Date() - 7).format(&#39;YYYY-MM-DD&#39;);
    
       console.log(dateFrom);
       console.log(dateTo);

But all returned values are same.


Moment JS - how to subtract 7 days from current date?

I would like to subtract 7 days from current date to get formatted date YYYY-MM-DD using moment.js library.
I tried to do by this way:
<pre><code class="hljs language-ini"> dateTo = moment(new Date()).format('YYYY-MM-DD');
 dateFrom = moment(new Date() - 7).format('YYYY-MM-DD');

 console.log(dateFrom);
 console.log(dateTo);
</code></pre>
But all returned values are same.

This is my demo using angularjs, for creating a service file, and adding service to a controller.

I have two problems with my demo:

- One is when I put `&lt;script src=&quot;HomeController.js&quot;&gt;` before `&lt;script src=&quot;MyService.js&quot;&gt;` I get this error,

&gt; Error: [ng:areq] Argument &#39;HomeController&#39; is not a function, got undefined

- The other is when I put `&lt;script src=&quot;MyService.js&quot;&gt;` before `&lt;script src=&quot;HomeController.js&quot;&gt;` I get the following error,

&gt; Error: [$injector:unpr] Unknown provider: MyServiceProvider &lt;- MyService

My source:

File `Index.html`:

    &lt;!DOCTYPE html&gt;
    &lt;html &gt;
        &lt;head lang=&quot;en&quot;&gt;…&lt;/head&gt;
        &lt;body ng-app=&quot;myApp&quot;&gt;
            …
            &lt;div ng-controller=&quot;HomeController&quot;&gt;
                &lt;div ng-repeat=&quot;item in hello&quot;&gt;{{item.id + item.name}}&lt;/div&gt;
            &lt;/div&gt;
    
            &lt;script src=&quot;Scripts/angular.js&quot;&gt;&lt;/script&gt;
            &lt;script src=&quot;Scripts/angular-route.js&quot;&gt;&lt;/script&gt;

            &lt;!-- App libs --&gt;
            &lt;script src=&quot;app/app.js&quot;&gt;&lt;/script&gt;    
            &lt;script src=&quot;app/services/MyService.js&quot;&gt;&lt;/script&gt;
            &lt;script src=&quot;app/controllers/HomeController.js&quot;&gt;&lt;/script&gt;
        &lt;/body&gt;
    &lt;/html&gt;

File `HomeController.js`:

    (function(angular){
        &#39;use strict&#39;;
    
        var myApp = angular.module(&#39;myApp&#39;,[]);
    
        myApp.controller(&#39;HomeController&#39;,function($scope,MyService){    
            $scope.hello=[];
            $scope.hello = MyService.getHello();
        });
    })(window.angular);

File `MyService.js`:

    (function(angular){
        &#39;use strict&#39;;
    
        var myApp = angular.module(&#39;myApp&#39;,[]);
    
        myApp.service(&#39;MyService&#39;, function () {
            var hello =[  {id:1,name:&#39;cuong&#39;},
                {id:2,name:&#39;nguyen&#39;}];
            this.getHello = function(){
                return hello;
            };
        });
    
    })(window.angular);

Angularjs: Error: [ng:areq] Argument &#39;HomeController&#39; is not a function, got undefined

I&#39;ve just finished reading the Promises/A+ specification and stumbled upon the terms microtask and macrotask: see http://promisesaplus.com/#notes

I&#39;ve never heard of these terms before, and now I&#39;m curious what the difference could be?

I&#39;ve already tried to find some information on the web, but all I&#39;ve found is this post from the w3.org Archives (which does not explain the difference to me): http://lists.w3.org/Archives/Public/public-nextweb/2013Jul/0018.html

Additionally, I&#39;ve found an npm module called &quot;macrotask&quot;: https://www.npmjs.org/package/macrotask
Again, it is not clarified what the difference exactly is.

All I know is, that it has something to do with the event loop, as described in https://html.spec.whatwg.org/multipage/webappapis.html#task-queue
and https://html.spec.whatwg.org/multipage/webappapis.html#perform-a-microtask-checkpoint

I know I should theoretically be able to extract the differences myself, given this WHATWG specification. But I&#39;m sure that others could benefit as well from a short explanation given by an expert.


Difference between microtask and macrotask within an event loop context

According to [this esdiscuss discussion](https://twitter.com/esdiscuss/status/512420829628362752), it is possible in ECMAScript 6 to define multiline strings without having to place subsequent lines of the string at the very beginning of the line.

[Allen Wirfs-Brock’s post](http://esdiscuss.org/topic/multiline-template-strings-that-don-t-break-indentation#content-11) contains a code example:

    var a = dontIndent
            `This is a template string.
             Even though each line is indented to keep the
             code neat and tidy, the white space used to indent
             is not in the resulting string`;

Could someone explain how this can be achieved? How to define this `dontIndent` thing in order to remove the whitespace used for indentation?

Multiline strings that don&#39;t break indentation

Is it possible to tell browsers to not run JavaScript from specific parts of an HTML document?

Like:

    &lt;div script=&quot;false&quot;&gt; ...

It could be useful as an additional security feature. All the scripts I want are loaded in a specific part of the document. There should be no scripts in other parts of the document and if there are they should not be run.


Can I ask a browser to not run &lt;script&gt;s within an element?

I&#39;m having a problem always when I&#39;m trying to close a window through the `window.close()` method of the Javascript, while the browser displays the below message on the console:

    &quot;Scripts may close only the windows that were opened by it.&quot;

This occurs in every part of the page. I can run this directly of a link, button, or a script, but this message always are displayed.

I&#39;m tried to replace the `window.close();` method for the functions (or variants of these) below, but nothing happened again:

    window.open(&#39;&#39;, &#39;_self&#39;, &#39;&#39;);
    window.close();

window.close() doesn&#39;t work - Scripts may close only the windows that were opened by it

I&#39;m trying to convert a date string to epoch, then epoch back to the date string to verify that I&#39;m providing the correct date string.

    var epoch = moment(&quot;10/15/2014 9:00&quot;).unix(); // do I need to do .local()?
    var momentDate = moment(epoch); // I&#39;ve also tried moment.utc(epoch) 
    var momentDateStr = momentDate.calendar();
    alert(&quot;Values are: epoch = &quot; + epoch + &quot;, momentDateStr = &quot; + momentDateStr);

Renders

    Values are: epoch = 1413378000, momentDateStr = 01/17/1970

Note: I&#39;m using the following version of the moment js script, //cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.3/moment-with-locales.js

Using momentjs to convert date to epoch then back to date

Java 8&#39;s [`DateTimeFormatter`][1] class has a method, `ofPattern(String pattern)`, that lets you define a format from a string of `A-z`, `a-z` letters. The examples don&#39;t clarify the difference between `y`, *year-of-era* and `Y`, *week-based-year*. What is it?

    Symbol  Meaning                     Presentation      Examples
    ------  -------                     ------------      -------
     y       year-of-era                 year              2004; 04
     Y       week-based-year             year              1996; 96


  [1]: http://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html

Difference between year-of-era and week-based-year?

I want to convert `String myDate = &quot;2014/10/29 18:10:45&quot;` to 
`long ms (i.e. currentinmlilies)`? I look for it on Google, but I can only find how to convert *ms* to *date*. 

Note: To make it clear, I want to get the ms from the date in 1970/1/1 format.

How to convert a date to milliseconds

I&#39;m trying to get last day of the previous month using:

     var dateFrom = moment(dateFrom).subtract(1, &#39;months&#39;).format(&#39;YYYY-MM-DD&#39;);


Where: 

    dateFrom = 2014-11-30 

But after using 

    subtract(1, &#39;months&#39;)

it returns date 

    DATE_FROM: &quot;2014-10-30&quot;

But last day of the 10&#39;th month is 31. 

How can I solve i please?

Many thanks for any help.


 

MomentJS - How to get last day of previous month from date?

I am trying to get the difference between the current date as `NSDate()` and a date from a PHP `time();` call for example: `NSDate(timeIntervalSinceReferenceDate: 1417147270)`. How do I go about getting the difference in time between the two dates. I&#39;d like to have a function that compares the two dates and `if(seconds &gt; 60)` then it returns minutes, `if(minutes &gt; 60)` return hours and `if(hours &gt; 24)` return days and so on. 

How should I go about this?

EDIT: The current accepted answer has done exactly what I&#39;ve wanted to do. I recommend it for easy usage for getting the time between two dates in the form that that PHP `time()` function uses. If you aren&#39;t particularly familiar with PHP, that&#39;s the time in seconds from January 1st, 1970. This is beneficial for a backend in PHP. If perhaps you&#39;re using a backend like NodeJS you might want to consider some of the other options you&#39;ll find below.

Getting the difference between two Dates (months/days/hours/minutes/seconds) in Swift

How could I get from moment JS the week number from a date in the past only from a moment formatted object from a day selected?

Moment.js get the week number based on a specific day (also past years)

I need to calculate a JS date given year=2014 and month=9 (September 2014).

I tried this:

    var moment = require(&#39;moment&#39;);
    var startDate = moment( year+&#39;-&#39;+month+&#39;-&#39;+01 + &#39; 00:00:00&#39; );
    			var endDate = startDate.endOf(&#39;month&#39;);
    			console.log(startDate.toDate());
    			console.log(endDate.toDate());

Both of logs show:

    Tue Sep 30 2014 23:59:59 GMT+0200 (CEST)
    Tue Sep 30 2014 23:59:59 GMT+0200 (CEST)

End date is correct but... why the start date is not?

Moment JS start and end of given month

I have a output resulting from a timepicker giving 12 hour format of time.

    Eg : &quot;1:45 AM (or) &quot;12:15 PM&quot; as **string**

Is there a way to parse this string format to 24 hour using moment js back to date object?

Convert 12 hour (AM/PM) string to 24 Date object using moment js

I am not able to get the JavaScript Date string for MongoDB record via the following. It keeps using my local time.

    var utc = moment.utc().valueOf();
    console.log(moment.utc(utc).toDate());

Output:

    Tue Nov 11 2014 14:42:51 GMT-0500 (EST)

I need it to be in UTC, so I can stick this timestamp in Mongo so type would be `Date`.

How can I do that?

MomentJS getting JavaScript Date in UTC

I need to extract the 1st 2 characters in a string to later create bin plot distribution. 
vector:

    x &lt;- c(&quot;75 to 79&quot;, &quot;80 to 84&quot;, &quot;85 to 89&quot;) 

I have gotten this far:

    substrRight &lt;- function(x, n){
      substr(x, nchar(x)-n, nchar(x))
    }

invoke function

    substrRight(x, 1)

Response

    [1] &quot;79&quot; &quot;84&quot; &quot;89&quot;

Need to prints the last 2 characters not the first. 

    [1] &quot;75&quot; &quot;80&quot; &quot;85&quot;




Content Type	Original Author	Original Content on Stackoverflow
Question	redrom	View Question on Stackoverflow
Solution 1 - Javascript	stu_sha	View Answer on Stackoverflow
Solution 2 - Javascript	Vinz243	View Answer on Stackoverflow
Solution 3 - Javascript	Samuel Chibuike	View Answer on Stackoverflow
Solution 4 - Javascript	Ioan Beilic	View Answer on Stackoverflow
Solution 5 - Javascript	Rafique Mohammed	View Answer on Stackoverflow
Solution 6 - Javascript	Rohit Parte	View Answer on Stackoverflow

Moment JS - how to subtract 7 days from current date?

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

Solution 3 - Javascript

Solution 4 - Javascript

Solution 5 - Javascript

Solution 6 - Javascript

Extending React.js components

Xcode 6 and Embedded Frameworks only supported in iOS8

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