How to detect the device orientation using CSS media queries?
In JavaScript the orientation mode can be detected using: if (window.innerHeight > window.innerWidth) { portrait = true; } else { portrait = false; … Read more
Browser
How does “304 Not Modified” work exactly?
How are “304 Not Modified” responses generated? How does a browser determine whether the response to an HTTP request is 304? Is it … Read more
Disabling browser print options (headers, footers, margins) from page?
I have seen this question asked in a couple of different ways on SO and several other websites, but most of them are … Read more
How to copy text to the client’s clipboard using jQuery? [duplicate]
This question already has answers here: How do I copy to the clipboard in JavaScript? (69 answers) Closed 7 years ago. The workflow … Read more
What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?
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 … Read more
How do I uniquely identify computers visiting my web site?
I need to figure out a way uniquely identify each computer which visits the web site I am creating. Does anybody have any … Read more
How do I render a Word document (.doc, .docx) in the browser using JavaScript?
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 … Read more
How can I determine what font a browser is actually using to render some text?
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 … Read more
Edit and replay XHR chrome/firefox etc?
I have been looking for a way to alter a XHR request made in my browser and then replay it again. Say I … Read more
How can I stop the browser back button using JavaScript?
I am doing an online quiz application in PHP. I want to restrict the user from going back in an exam. I have … Read more