You can map the native array reversal method to a jQuery function.
$.fn.reverse = [].reverse; // e.g., loop through list elements in reverse order. $("ul").children("li").reverse().each( function() { ... } );
You can map the native array reversal method to a jQuery function.
$.fn.reverse = [].reverse; // e.g., loop through list elements in reverse order. $("ul").children("li").reverse().each( function() { ... } );
I’ve been using the Google Code Prettify plugin for my code samples, which is nice for syntax highlighting, but still lacks something I think every code sample should have: line numbers.
I didn’t want to have to add them manually to every code sample I put up, so I came up with a quick solution to auto-generate line numbers with JavaScript. Because I wanted a quick solution, this code uses jQuery for all the heavy lifting.
Here it is, complete with line numbers:
$(document).ready( function() { $("pre.prettyprint").each( function() { var code = $(this).html(); code = escape(code); // %0A is a line feed, %0D is a carriage return if (code.indexOf("%0D%0A") > -1) { linecount = code.match(/%0D%0A/g).length; } else if (code.indexOf("%0A") > -1) { linecount = code.match(/%0A/g).length; } else if (code.indexOf("%0D") > -1) { linecount = code.match(/%0D/g).length; } code = unescape(code); var linenumbers = 1; for (i = 1; i < linecount; i++) { linenumbers += "<br />" + (i + 1); } $(this).before("<pre class=\"linenumbers\">" + linenumbers + "</pre>") } ); } );
And then this little bit of CSS so it matches the prettify.css that comes with the Google Code Prettify plugin:
pre.linenumbers { width: auto; background-color: #EEE; border-width: 1px 0 1px 1px; border-style: solid; border-color: #888; float: left; margin: 0; padding: 2px 4px; color: #888; text-align: right; }
I purposefully keep the numbers in a separate element from the code, so they don’t interfere when you try to copy the code samples to your clipboard.
And there you have it. Now I can easily reference specific line numbers in my code.
Here’s the JavaScript:
function externalLinks() { var domainList = new Array("andycouch.com", "google.com"); // Your domain(s). // Links to anything on these domains are considered internal. // Enclose each domain in quotes, separated by a comma. (e.g. "domain1", "domain2") // You do not need to list sub-domains. This function already assumes all sub-domains // are internal. // Open external links in a new window? true = yes, false = no var newWindow = true; // Add a special class to external links? true = yes, false = no var addClass = true; // Class name for external links. var extClass = "external"; // Add a warning dialog to external links? true = yes, false = no var addWarning = true; // Text for warning dialog. var warning = "You are about to leave my site."; if (!document.getElementsByTagName) return false; var anchorList = document.getElementsByTagName("a"); var protocolStart = "^http[s]?:\/\/"; var protocol = new RegExp(protocolStart, "i"); var domains = ""; for (var i=0; i < domainList.length; i++) { domains += "(" + domainList[i] + ")"; if (i < (domainList.length - 1)) { domains += "|"; } } var mySites = new RegExp(protocolStart + "([a-z0-9-\.]*\.)?" + domains, "i"); for (var i=0; i < anchorList.length; i++) { if (anchorList[i].href.match(protocol) && !anchorList[i].href.match(mySites)) { if (newWindow) anchorList[i].setAttribute("target", "_blank"); if (addClass) anchorList[i].className=extClass; if (addWarning) anchorList[i].onclick=function() { var leave = window.confirm(warning); return leave; } } } } window.onload=externalLinks;
Here’s some extra CSS:
a.external { padding-right: 17px; background: url("/images/icon_globe.png") right center no-repeat; }
I’ll add some more text to this entry eventually.