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HTML: How to limit file upload to be only images?

...<input type="file" accept="image/*">. Of course, never trust client-side validation: Always check again on the server-side... share | improve this answer | follow ...
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req.body empty on posts

...ntent type select "X-www-form-urlencoded" and it should work. Also to get rid of error message replace: app.use(bodyParser.urlencoded()) With: app.use(bodyParser.urlencoded({ extended: true })); See https://github.com/expressjs/body-parser The 'body-parser' middleware only handles JSON and urlen...
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Can I set the height of a div based on a percentage-based width? [duplicate]

Let's say I've got a div that has a width of 50% of the body. How do I make its height equal to that value? So that when the browser window is 1000px wide, the div's height and width are both 500px. ...
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Using CSS for a fade-in effect on page load

...n { from { opacity: 0; } to { opacity: 1; } } Demo http://jsfiddle.net/SO_AMK/VV2ek/ Browser Support All modern browsers and Internet Explorer 10 (and later): http://caniuse.com/#feat=css-animation Method 2: Alternatively, you can use jQuery (or plain JavaScript; see the third...
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How can you tell when a layout has been drawn?

...You can add a tree observer to the layout. This should return the correct width and height. onCreate() is called before the layout of the child views are done. So the width and height is not calculated yet. To get the height and width, put this on the onCreate() method: final LinearLayout layou...
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How can you do paging with NHibernate?

For example, I want to populate a gridview control in an ASP.NET web page with only the data necessary for the # of rows displayed. How can NHibernate support this? ...
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Is it possible to read the value of a annotation in java?

...nt to have an annotation processor that does not need to be explicitly provided with a class name? Can it be made to pick it up from the context; 'this'?? – 5122014009 Sep 17 '14 at 6:40 ...
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How can I scroll a web page using selenium webdriver in python?

...nium webdriver to parse through facebook user friends page and extract all ids from the AJAX script. But I need to scroll down to get all the friends. How can I scroll down in Selenium. I am using python. ...
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SQL-Server: Error - Exclusive access could not be obtained because the database is in use

... Set the path to restore the file. Click "Options" on the left hand side. Uncheck "Take tail-log backup before restoring" Tick the check box - "Close existing connections to destination database". Click OK. share ...
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How do I make a semi transparent background?

... yes, IE supports rgba, its syntax is #ARGB and is written as filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#AARRGGBBAA,endColorstr=#AARRGGBBAA); its basically a gradient of a static color but with transparency. – Tarun Jan 27 '11 at 5:23 ...