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 Post subject: Javascript Snippets
PostPosted: Sun Oct 17, 2010 5:23 pm 
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Krew (Admin)
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Posts: 2331
Location: *poof*
Title: The Mad Hacker
These are just a few JS functions I wrote to make things easier at work. Couldn't find good ones on google so I wrote them myself.

A Bookmarkable 'reset forms' link:
Code:
javascript:for(x in document.getElementsByTagName("form")){document.getElementsByTagName("form")[x].reset();};




Print price from float or string (2 digits after decimal, truncate instead of rounding):
Code:
function PriceString(x){
       var cost = parseFloat(x).toString();
       return ((cost.indexOf(".")==-1?(cost+"."):(cost))+"00").replace(/^([0-9]*)\.([0-9]{2}).*/,
"$$$1.$2");
}




Substring Count
Code:
/* String prototype to use with either below */
String.prototype.ssc = function(needle) {
   return substr_count(this, needle);
}

/* Recursive substr_count */
function substr_count(haystack, needle) {
   return haystack.indexOf(needle)==-1?0:substr_count(haystack.substr(haystack.indexOf(needle)+1), needle)+1;
}

/*Non-recursive version*/
function substr_count(haystack, needle) {
   var count=0;
   for(var x=0; haystack.indexOf(needle, x)!=-1; count++)
   {
      x=haystack.indexOf(needle, x)+1;
   }
   return count;
}




Random Alpha Numeric String of length x
Code:
function randomString(x) {
   var randomstring = '';
   for (var i=0; i<x; i++)
      randomstring += "0123456789abcdefghiklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXTZ".substr(Math.floor(Math.random() * 61),1);
   return randomstring;
}





Hopefully you can use them or, even better, offer better solutions.

Please feel free to post other useful javascript functions in here too.

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 Post subject: Re: Javascript Snippets
PostPosted: Sun Oct 17, 2010 10:43 pm 
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Krew (Admin)
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Joined: Sun Oct 01, 2006 9:26 pm
Posts: 3765
Title: All in a day's work.
Isn't JavaScript great? My only suggestion is on the first one; use an anonymous self-executing function (you'll see this pattern a lot to deal with namespacing) and define document.getElementsByTagName in a variable:

Code:
javascript:(function(){var $=document.getElementsByTagName;for(x in $("form")){$("form")[x].reset();};})();


I have a couple of useful snippets like these, too. Some are at work on the LAN, so I can't reach them from here. I started developing some jQuery plugins, as well. I'll post them here when they are ready.

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 Post subject: Re: Javascript Snippets
PostPosted: Mon Oct 18, 2010 7:20 pm 
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Krew (Admin)
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Title: The Mad Hacker
Yeah; I have fun with it. =)

I'll continue to post more as I write them. I wrote a basic structure for dealing with click/shift+click/ctrl+click/shift+ctrl+click for selecting lists of items and some cross-browser-friendly shift/ctrl detection. Maybe I'll post that when I bring it home.


I look forward to seeing your snippets and plugins!

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 Post subject: Re: Javascript Snippets
PostPosted: Tue Jan 25, 2011 1:35 am 
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Komrade
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Joined: Tue Mar 27, 2007 10:18 am
Posts: 1328
Shouldn't it be "JavaScript"-

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 Post subject: Re: Javascript Snippets
PostPosted: Mon Feb 07, 2011 1:40 am 
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Krew (Admin)
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Title: All in a day's work.
Two resources:

http://www.crockford.com/javascript/
http://inimino.org/~inimino/blog/javascript_semicolons

Combining ideas these articles, I wrote DoodleEarth*. And then I ran it through Google's JavaScript Closure Compiler, which complained that IE doesn't support getters. *sigh* I used getters as a portable means of creating true constants. Not that IE even matters for this project, since it requires HTML canvas. Apparently, it also throws a fit when a variable is defined twice. That was an easy fix.


* As of February 7, 2011, the server hosting this project is still offline. When I get it back up, I suggest checking out the source. It's really different from most JavaScript, but kind of sexy in its own way.

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 Post subject: Re: Javascript Snippets
PostPosted: Mon Feb 07, 2011 7:54 pm 
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Krew (Admin)
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Please post again when the server is back up; I would be interested in checking it out. =)





A dirty (programatically) script to skip Ads and "Queues" on http://www.king.com/
Code:
window.location="javascript:(function(){numQueue=0;goToTarget();})();"

My mom plays games there all the time. When I saw a game lasted 30 seconds and that there was completely false 1min "queues" and/or ads in between each round, I almost vomited.

If you had greasemonkey on firefox, you can set it to run on "http://www.king.com/*" and it will automatically skip the ads and queues.

OR you can set the code above as a bookmark location and click the bookmark between rounds.

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 Post subject: Re: Javascript Snippets
PostPosted: Mon Feb 07, 2011 10:23 pm 
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Krew (Admin)
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Title: All in a day's work.
Greasemonkey is made of love. http://userscripts.org/users/49085 The SyntaxHighlighter userscript is fantastic, but I have an updated version on the server that's down. :x

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 Post subject: Re: Javascript Snippets
PostPosted: Wed Feb 09, 2011 10:06 pm 
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Krew (Admin)
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Sexy indeed.

So is userscripts.org - I just signed up.

and wrote a script:


RainyVolume
Volume control is frequently requested for http://RainyMood.com/ and this greasemonkey script I just wrote will let you have it:

Code:
// ==UserScript==
// @name           RainyVolume
// @namespace      http://kodewerx.org/
// @include        http://www.rainymood.com/
// ==/UserScript==
document.getElementsByTagNameNS("*","embed")[0].parentNode.innerHTML='' +
'<object width="300" height="16">' +
'<embed src="http://www.rainymood.com/audio/RainyMood.mp3" autostart="true" loop="true" width="300" height="16" ' +
'controller="true"></embed>' +
'</object>';


Easy install available: http://userscripts.org/scripts/show/96567

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 Post subject: Re: Javascript Snippets
PostPosted: Fri Mar 18, 2011 10:20 pm 
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Krew (Admin)
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Title: All in a day's work.
The server is back up!

http://www.doodleearth.com/
http://parasyte.kodewerx.org/userscripts/

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 Post subject: Re: Javascript Snippets
PostPosted: Sat Mar 19, 2011 7:40 am 
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Krew (Admin)
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That Syntax Highlighter works in that it parses it, but the html just prints to my screen. D=

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 Post subject: Re: Javascript Snippets
PostPosted: Sat Mar 19, 2011 12:59 pm 
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Krew (Admin)
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lulz

It worked in Firefox 4.0 beta. Never did try it in other versions. And it definitely does not work in Chrome, even though it can be installed.

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 Post subject: Re: Javascript Snippets
PostPosted: Sun Mar 20, 2011 12:59 pm 
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Do you know when it's comming out of beta? I'm using it too.

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 Post subject: Re: Javascript Snippets
PostPosted: Tue Mar 22, 2011 8:09 pm 
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Kommunist
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Chrome is actually a nice browser, too bad it doesn't work on it.


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 Post subject: Re: Javascript Snippets
PostPosted: Tue Mar 22, 2011 8:58 pm 
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Krew (Admin)
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Title: The Mad Hacker
Chrome's support for greasemonkey scripts is shit. I would consider switching if it matched FF.

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 Post subject: Re: Javascript Snippets
PostPosted: Tue Mar 22, 2011 9:49 pm 
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Krew (Admin)
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Title: All in a day's work.
Firefox 4 was released today.

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 Post subject: Re: Javascript Snippets
PostPosted: Tue Jul 12, 2011 6:35 pm 
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Krew (Admin)
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Title: The Mad Hacker
I wrote a quick konami code thing a few months ago:

Code:
<script type="text/javascript">
<!--
var kkr="65663937393740403838";
var curst="";   
document.onkeyup = function(e){
    e = e || window.event;
    k = e.keyCode || e.which;
    curst=(k.toString()+curst).substr(0,20);
    if(curst==kkr) {
        //javascript to execute when konami code is entered
    }
    return true;};
//-->
</script>


I meant to post it sooner but I forgot

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 Post subject: Re: Javascript Snippets
PostPosted: Mon Aug 04, 2014 3:58 am 
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Krew (Admin)
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Just wrote these sexy beasts:
Code:
   var byteReverse = function(hexByteStr) {
      return hexByteStr.match(/../g).reverse().join("");
   };
   byteReverse("38384040373937396665");

   var endianConvert = function(hexByteStr, wordSize) {
      var re = new RegExp("("+(new Array(~~((wordSize||32)/8)+1)).join("..")+")", "g");
      return hexByteStr.replace(re, function(s, m) { return byteReverse(m); });
   };

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 Post subject: Re: Javascript Snippets
PostPosted: Thu Aug 21, 2014 11:30 am 
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Krew (Admin)
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Title: All in a day's work.
That reminds me of a few utility functions I wrote for something amazing:

Code:
/**
 * Pad a string on the left to specified width using given substring
 * @param {String} str Input string
 * @param {Number} width Minimum string width
 * @param {String} [pad=" "] Padding substring
 * @return {String} Padded string
 * @name padLeft
 * @method
 * @memberOf util
 */
exports.padLeft = function padLeft(str, width, pad) {
    pad = pad || " ";
    while (str.length < width) {
        str = pad + str;
    }
    return str;
};

/**
 * Pad a string on the right to specified width using given substring
 * @param {String} str Input string
 * @param {Number} width Minimum string width
 * @param {String} [pad=" "] Padding substring
 * @return {String} Padded string
 * @name padRight
 * @method
 * @memberOf util
 */
exports.padRight = function padRight(str, width, pad) {
    pad = pad || " ";
    while (str.length < width) {
        str += pad;
    }
    return str;
};

/**
 * Convert a number into hexadecimal notation
 * @param {Number} num Input number
 * @param {Number} [width=1] zero-padding width
 * @param {String} [prefix="0x"] Hex prefix
 * @return {String} Hexadecimal representation of input number
 * @name hex
 * @method
 * @memberOf util
 */
exports.hex = function hex(num, width, prefix) {
    return (typeof(prefix) === "undefined" ? "0x" : prefix) +
        exports.padLeft(num.toString(16), width || 1, "0");
};

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