For me (Firefox 11, Firebug 1.9.1) it happens sometimes after I refresh the page (either F5 or CTRL+F5) while debugger is paused on a breakpoint. The solution seems to be to continue the execution of the script, and refresh the page only when Firebug is not paused.
From MDN: Note that in Firefox 4 and later the returned string is not displayed to the user. See Bug 588292. This “Bug” is actually a (imho questionable) feature.. so there’s no way to display the message in Firefox 4. If you think it should be changed, comment on that bug so the Firefox developers … Read more
Rails generate standard textarea tag, but Safari/Chrome (Webkit) display all (not only Rails 🙂 textareas as resizable. Its apperance may be disabled by CSS textarea { resize: none; } Or, if need only vertical resize: textarea { resize: vertical; }
This was a little tricky but I’ve set up this exmaple: http://jsfiddle.net/c5aTe/ which is working for me. Basically the trick seems to be getting around having placeholder text which is invalid. Otherwise you should be able do this: input:required { box-shadow:none; } input:invalid { box-shadow:0 0 3px red; } or something similar… BUT since FF4 … Read more