If you are looking for useful jQuery snippets, here’s list compiled from my previous posts. I am sure this list will come in handy for you in your jQuery projects.
Add/Remove Input Fields Dynamically with jQueryjQuery Move Div Left/right/up/downHow to Select / Deselect All Checkboxes using jQuerySimple Form validation jQuery snippetValidating File Size Before Form Submit (HTML5)Get Selected Values From Radio Button using jQuerSelect Box Change Dependent Options dynamicallyPassword Strength Checker jQueryRestrict multiple URLs in Input with jQueryMove Content Back And Forth With jQueryCreating Simple Hover Fade jQuery PluginTriggering callback after user stops typing jQueryBack to Top Smooth scroll using jQueryDraggable Element with JQuery (No jQuery UI)Enable/Disable Form Submit Button with jQueryGet Selected Values From Radio Button using jQueryConfirmation dialog on leaving pageSelect All Text In Element on ClickGet current location of user using jQuery (Geolocation API)
We used .attr() method to get the attribute value of a checkbox. Which would return “checked” if the checkbox state is checked. But as of jQuery 1.6 it will return undefined if checkbox state is not set.
Blueimp File Upload is a popular free jQuery File upload plugin which can handle multiple file uploads, it comes with many attractive features like drag & drop support, progress bars, client side preview of pictures, audios and videos. It works with any server-side platform such as Google App Engine, PHP, Python, Ruby on Rails, Java.