In JavaScript the orientation mode can be detected using: if (window.innerHeight > window.innerWidth) { portrait = true; } else { portrait = false; } However, is there a way to detect the orientation using CSS only? Eg. something like: @media only screen and (width > height) { … } 5 Answers 5
How are “304 Not Modified” responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it set by the browser or sent from the server? If sent by the server, how does the server know the data available in cache, also how does it set 304 to an … Read more
I have seen this question asked in a couple of different ways on SO and several other websites, but most of them are either too specific or out-of-date. I’m hoping someone can provide a definitive answer here without pandering to speculation. Is there a way, either with CSS or javascript, to change the default printer … Read more
This question already has answers here: How do I copy to the clipboard in JavaScript? (69 answers) Closed 7 years ago. The workflow is simple: You click inside a textarea. The text is copied to the client’s clipboard. Display notice to the user. How do you do it? 1 Answer 1
What are all the valid self-closing elements (e.g. <br/>) in XHTML (as implemented by the major browsers)? I know that XHTML technically allows any element to be self-closed, but I’m looking for a list of those elements supported by all major browsers. See http://dusan.fora.si/blog/self-closing-tags for examples of some problems caused by self-closing elements such as … Read more
I need to figure out a way uniquely identify each computer which visits the web site I am creating. Does anybody have any advice on how to achieve this? Because i want the solution to work on all machines and all browsers (within reason) I am trying to create a solution using javascript. Cookies will … Read more
I have successfully done code to display a PDF file in the browser instead of the “Open/Save” dialog. Now, I’m stuck trying to display a Word document in the browser. I want to display a Word document in Firefox, IE7+, Chrome etc. Can any one help? I am always getting the “Open/Save” dialog while displaying … Read more
My CSS specifies “font-family: Helvetica, Arial, sans-serif;” for the whole page. It looks like Verdana is being used instead on some parts. I would like to be able to verify this. I’ve tried copying and pasting from my browser into Word, but it’s not preserving the font. Is there some way to determine which font … Read more
I have been looking for a way to alter a XHR request made in my browser and then replay it again. Say I have a complete POST request done in my browser, and the only thing I want to change is a small value and then play it again. This would be a lot easier … Read more
I am doing an online quiz application in PHP. I want to restrict the user from going back in an exam. I have tried the following script, but it stops my timer. What should I do? The timer is stored in file cdtimer.js. <script type=”text/javascript”> window.history.forward(); function noBack() { window.history.forward(); } </script> <body onLoad=”noBack();” onpageshow=”if … Read more