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//http://appglobe.com/check-if-element-exists-with-jquery/
jQuery.fn.exists = function() { 
   return this.length > 0; 
};


// usage:
/*
if ( $('#element').exists() ) { 
   // Do something

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//http://www.paulirish.com/2008/how-to-iterate-quickly-when-debugging-css/
javascript:(function(){var%20h,a,f;a=document.getElementsByTagName('link');for(h=0;h<a.length;h++){f=a[h];if(f.rel.toLowerCase().match(/stylesheet/)&&f.href){var%20g=f.href.replace(/(&|%5C?)forceReload=\d+/,'');f.href=g+(g.match(/\?/)?'&':'?')+'forceReload='+(new%20Date().valueOf())}}})()

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//http://htmltweaks.com/Debugging_JavaScript_with_the_Console
var log = function(msg, force) {
    force ? alert(msg) : (window.console && window.console.log ? window.console.log(msg) : null);
};

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console.log(Object.keys(window));

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function getQueryVariable(variable)
{
       var query = window.location.search.substring(1);
       var vars = query.split("&");
       for (var i=0;i<vars.length;i++) {
               var pair = vars[i].split("=");
               if(pair[0] == variable){return pair[1];}
       }
       return(false);
}

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//http://www.textfixer.com/tutorials/javascript-line-breaks.php
someText = someText.replace(/(\r\n|\n|\r)/gm,"");

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(function() {
    var a = 0; // `a` is NOT a property of `window` now

    function foo() {
        alert(a);   // Alerts "0", because `foo` can access `a`
    }
})();

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/*
https://learn.jquery.com/using-jquery-core/faq/how-do-i-select-an-element-by-an-id-that-has-characters-used-in-css-notation/
The following function takes care of escaping these characters and places a "#" at the beginning of the ID string:
Example:
$( jq( "some.id" ) )
*/

function jq( myid ) {
return "#" + myid.replace( /(:|\.|\[|\])/g, "\\$1" );
}

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function sleep(millis, callback) {
    setTimeout(function()
            { callback(); }
    , millis);
}

/*
Example of usage:

console.log(process.argv);

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/*
 * robotMaze.js
 *
 * The blue key is inside a labyrinth, and extracting
 * it will not be easy.
 *
 * It's a good thing that you're a AI expert, or
 * we would have to leave empty-handed.
 */