Eddie On Everything » javascript

Evil Reddit Javascript Code

eddie — Thu, 31 Dec 2009 18:57:51 +0000

Reddit.com is a user community where people share new ideas and insightful commentary. Nah, just kidding – it’s just a website where you can find links to certain mob-approved topics. If you’re so inclined,you can even argue with and insult other people over those links. Ain’t the internet grand?

One silly feature of Reddit is the “karma” feature, where uses can vote a topic or comment “up” or “down” based on their opinion of the topic, the commenter, the commenter’s mom, or even the commenter’s command of the English language. At first, this might sound like a good idea. After all, if something is useful or insightful, it will then garner a lot of votes, right?

Wrong. In practice, what really happens is that anyone who disagrees with your viewpoint will vote your comment “down” for any reason at all, thus ensuring that differing viewpoints are never heard or considered. For instance, say you posted that you kind-of liked Microsoft’s new search engine “Bing,” and stated that its map feature had a couple of innovative ideas. Well you’d be instantly voted down by people who hate Microsoft, by geeks that love Google, by denizens that worship Apple, by GPS-fanatics, and people who just don’t care. You’ll garner just a few measly “upvotes” from people who might have had a chance to read your comments before they were down-voted to internet oblivion. Ain’t the internet grand?

And that’s if you’re lucky. If you’re unlucky, the disagreeing party will go through all of your past comments and vote them all “down,” thus ruining your “karma” score and decreasing your standing on the site.

In the end, it’s a pretty silly system.

So, here’s a little code that will help send that message:

Downvote every comment on a page:
javascript:(function f(){var u=$(".down");if(u.length-1){setTimeout(f,100);u[1].onclick()} })()
Upvote every comment on a page:
javascript:(function f(){var u=$(".up");if(u.length-1){setTimeout(f,100);u[1].onclick()} })()

Just paste the above code into your browser’s location bar and it will either upvote or downvote every comment on a page.

Ain’t the internet grand?

Calculate the Days Since a Given Date (Javascript)

eddie — Sat, 14 Nov 2009 23:12:28 +0000

I recently needed to calculate the number of days that had elapsed since a given date. Not happy with any of the code snippets I found on the internet, I wrote my own. A demo is below, along with the the javascript code. Note that the code uses a bit of dynamic HTML so no page refresh is necessary. The answer will appear beneath the form.

Feel free to use these in your projects.

Demo – Calculate the number of days since a given date

To get this to work on your website, you’ll need the following javascript function, along with the HTML file below.

The JavaScript:

function daysSince(m,d,y){
   if (d == '' || m=='' || y==''){
      alert ("All fields must be entered");
      return;
   }

   if (isNaN(m) || isNaN(y) || isNaN(d)){
      alert("Only numbers .");
      return;
   }

   var myDate=new Date();
   var yourDate=new Date(y,m-1,d);

   var secondsInADay = 1000*60*60*24;
   var diff = Math.floor( (myDate.getTime() - yourDate.getTime()) / secondsInADay );
   document.getElementById("result").innerHTML= "It has been " +
      diff + " days since " + m + "/" + d + "/" + y +".";
}

The HTML:


Day

Month

Year

If you make any useful alterations, feel free to share them in the comments.

Make any website editable with this handy javascript snippet

eddie — Wed, 24 Dec 2008 01:30:12 +0000

I recently spotted this handy little tip at blogstorm.co.uk.

Ever wanted to edit the text of a web page to create an annotated screenshot or mockup? Simply paste this line of code into your browser’s location bar, and voila, the page text can be edited:

javascript:document.body.contentEditable='true'; document.designMode='on'; void 0

No, you it doesn’t enable you to edit the original page. It does, however, let you easily alter your local copy.

Handy, eh?