http://snippets.dzone.com/posts Sun, 07 Sep 2008 08:59:48 GMT DZone Snippets: hidden code http://snippets.dzone.com/posts/show/5855 Works in Leopard, should work in all versions of OS X. <br /> <br /><code> <br />#!/bin/bash <br /> <br />if [ `defaults read com.apple.finder AppleShowAllFiles` == 1 ] <br />then <br /> echo "Hiding hidden files." <br /> defaults write com.apple.finder AppleShowAllFiles -bool false <br />else <br /> echo "Showing hidden files." <br /> defaults write com.apple.finder AppleShowAllFiles -bool true <br />fi <br /> <br />KillAll Finder <br /></code> Thu, 31 Jul 2008 02:00:25 GMT http://snippets.dzone.com/posts/show/5855 Aupajo (Pete) http://snippets.dzone.com/posts/show/5757 Determines if a given element is visible, by checking a variety of things. Will work for CSS or inline style declarations of visible:hidden or display: none. Will check if it's inside of an invisible element, as well. <br /> <br /><code> <br />function isVisible(obj) <br />{ <br /> if (obj == document) return true <br /> <br /> if (!obj) return false <br /> if (!obj.parentNode) return false <br /> if (obj.style) { <br /> if (obj.style.display == 'none') return false <br /> if (obj.style.visibility == 'hidden') return false <br /> } <br /> <br /> //Try the computed style in a standard way <br /> if (window.getComputedStyle) { <br /> var style = window.getComputedStyle(obj, "") <br /> if (style.display == 'none') return false <br /> if (style.visibility == 'hidden') return false <br /> } <br /> <br /> //Or get the computed style using IE's silly proprietary way <br /> var style = obj.currentStyle <br /> if (style) { <br /> if (style['display'] == 'none') return false <br /> if (style['visibility'] == 'hidden') return false <br /> } <br /> <br /> return isVisible(obj.parentNode) <br />} <br /></code> Thu, 10 Jul 2008 17:48:47 GMT http://snippets.dzone.com/posts/show/5757 TALlama (Seth A. Roby) http://snippets.dzone.com/posts/show/5145 The following code was copied from my Twitter home page, it shows how to delete a twitter entry on the server. <br /> <br />raw HTML code with embedded JavaScript code. <br /><code> <br /> <br /><a href="/status/destroy/719423092" onclick="if (confirm('Sure you want to delete this update? There is NO undo!')) <br />{var f = document.createElement('form'); f.style.display = 'none'; this.parentNode.appendChild(f); f.method = <br />'POST'; f.action = this.href;var m = document.createElement('input'); m.setAttribute('type', 'hidden'); <br />m.setAttribute('name', '_method'); m.setAttribute('value', 'delete'); f.appendChild(m);var s = <br />document.createElement('input'); s.setAttribute('type', 'hidden'); s.setAttribute('name', 'authenticity_token'); <br />s.setAttribute('value', 'd0057265c3784d2a6dc6cdb2c26083f638152151'); f.appendChild(s);f.submit(); };return false;" <br />title="Delete this update?"> <br /></code> <br /> <br />same code as above but with comments. <br /><code> <br /><a href="/status/destroy/719423092" onclick=" <br /> <br /> // if the user clicks the 'OK' button the confirm function will return true <br />if (confirm('Sure you want to delete this update? There is NO undo!')) { <br /> <br /> // -- dhtml: creating html elements on-the-fly ------------------------------- <br /> var f = document.createElement('form'); // create the dhtml 'form' (<form/>) element <br /> f.style.display = 'none'; // hide the form <br /> this.parentNode.appendChild(f); // append the form element to the parent of the current node (<a/>) <br /> f.method = 'POST'; // add the method to the form <br /> f.action = this.href; // add the action using the href of the current node (<a/>) <br /> <br /> var m = document.createElement('input'); // create the input (<input/>) 'element' <br /> m.setAttribute('type', 'hidden'); // set the input type to 'hidden' <br /> m.setAttribute('name', '_method'); // set the input name to '_method' <br /> m.setAttribute('value', 'delete'); // set the input value to 'delete' <br /> f.appendChild(m); // append the input element to the form element <br /> <br /> var s = document.createElement('input'); // create another input element <br /> s.setAttribute('type', 'hidden'); // set the type to 'hidden' <br /> s.setAttribute('name', 'authenticity_token'); // set the name to 'authenticity_token' <br /> <br /> // set the input element's value using a unique id. <br /> s.setAttribute('value', 'd0057265c3784d2a6dc6cdb2c26083f638152151'); <br /> <br /> f.appendChild(s); // apend the input element to the form element <br /> // -- end of dhtml: creating html elements on-the-fly ------------------------------- <br /> <br /> f.submit(); // post the form data back to the server to delete the record, <br /> // just as if the user had pressed the submit button. <br />}; <br /> <br /> return false; // returning false cancels the default <a href="..."> request. <br /> // However if JavaScript had been disabled for some reason the <br /> // <a href="..."> would have acted normally, meaning the record <br /> // would have been deleted from following the URL request directly. <br /> " <br /></code> <br />Note: Twitter needs JavaScript for the web page to work properly, I've tried and it is not possible to delete a record without JavaScript. The authenticity_token has been altered by me to prevent any malicious activity on my Twitter account. <br /> Sat, 16 Feb 2008 13:17:07 GMT http://snippets.dzone.com/posts/show/5145 jrobertson (James Robertson)