Javascript is a programming or scripting language primarily used for client-sided programming in web browsers. It can also be used as a server-side programming language but this is generally used less often. Javascript was originally created by Netscape for their browser Netscape Navigator, and is now an implementation of the ECMAScript standard. It is typically used in web browsers for form validation, floating navigation, AJAX and other nifty things to make web pages more interactive.
I often need to convert UNIX timestamps from log files into a human readable format and need a quick and easy to access tool for doing so, and have written up this post with the converter tool followed by an explanation of the Javascript code behind it.
Disqus is a 3rd party hosted Javascript comments system for websites which I use on several of my websites including this one. Disqus has an undocument set of callback functions which can be called after it has finished loading, when new comments are posted, etc.
I was asked on my post about showing a loading image when loading AJAX content with jQuery how to disable the button that loads the content while it’s loading, and then re-enable it again once the content is fully loaded. This post shows how to do this, and it will work whether it’s a link, button or some other action which calls the AJAX loading function.
When assigning a click handler to an anchor tag with jQuery you’ll often want to then prevent the browser from clicking through to the actual link. There are two ways I know of to do this with jQuery and these are presented there.
Some time back I posted how to show plain text in a password field and make it a regular password field on focus using jQuery, so that it could show some default text (i.e. "password") before anything was entered and then work like a normal password field when the user started typing text into it.
As someone a couple of days ago pointed out in the comments on that page, while it’s not possible to change the type of a password input with jQuery, it is with regular Javascript. So this post shows how to do just that and which browsers do and don’t support it.
This post is to answer a question asked in the comments section of my "Show and hide an element with jQuery – Part 1 of 2" post from a couple of years ago. It’s a pretty simple question, asking how to have an element hidden with CSS at first and then show it with jQuery later. It might be triggered automatically, or when a button is clicked or the mouse hovering over something.