Easy To Calculate Coursera Video Length

EasyToCalculateCourseraVideoLength

//For "# min" type
var searchCorpus = $('a.lecture-link').text();
var matches = searchCorpus.match(/(\d).+min/gm);
var bigResult = [];
for (index in matches) {bigResult.push(matches[index].match(/([\d]+)/g)[0]);}
var sum = 0;
for (index in bigResult) {sum = sum + parseInt(bigResult[index]);}

/*=============================================
=                 User Guide
=============================================*/

For Chrome:
Open your browser console by: view->developer->JavaScript Console
Then copy and paste the code below to the console, then hit "ENTER" button

It will print out a string of text like "The videos you are watching have a total time length of xxx minutes".

For IE:
I don't use IE. Go get a Chrome.

For FireFox:
Open console by: Tools->Web Developer->Web Console
Then copy and paste the code below to the console, then hit "ENTER" button

It will print out a string of text like "The videos you are watching have a total time length of xxx minutes".

Author:
Allen Nie
/*-----  End of comment  ------*/


/**
* Script Starts here: 
**/
(function($) {
  var bigResult = [];
  var sum = 0;
  var searchCorpus = $('a.lecture-link').text();
  var matches = searchCorpus.match(/((\d)(?:.+min))|((\d).?):(?:\d*)/gm);
  for (index in matches) {bigResult.push(matches[index].match(/([\d]+)(?=:)|([\d]+) /g)[0]);}
  for (index in bigResult) {sum = sum + parseInt(bigResult[index]);}
  console.log("The videos you are watching have a total time length of: "+sum+" min.");
  sum;	
})(jQuery);

/**
* Executable Script ends here. Do not copy anything below this line.
**/

var groups;
re = /([\d]+)(?=:)|([\d]+) /g; //if g is flagged, and "exec" is used, must add while loop to finish the run.
while (groups = re.exec(str)) {

}