Mother Jones
<!DOCTYPE html PUBLIC “-//W3C//DTD HTML 4.0 Transitional//EN” “http://www.w3.org/TR/REC-html40/loose.dtd”>
Metal Cats, a new book that compiles photos of headbangers with their felines, made us wonder: Who’s more metal, cat or owner? Take the quiz below, featuring some of the book’s photos, to find out.
(function($)
function make_default_how_you_did_html(nCorrect, nQuestions)
var answersWord = nCorrect === 1 ? ‘answer’ : ‘answers’;
return ‘You got ‘ + nCorrect + ‘ ‘ +
‘correct ‘ + answersWord + ‘ out of ‘ + nQuestions + ‘ questions’;
function make_default_how_you_did_htmls(nQuestions)
var ret = [];
for (var i = 0; i <= nQuestions; i++)
ret.push(make_default_how_you_did_html(i, nQuestions));
return ret;
}
$.quiz = function(quiz_data, results_data, options)
var container_elem;
var self;
var cover;
var cheater_answer_tracking = [];
var answer_tracking = [];
var how_you_did_element;
var quiz =
defaulting_behavior_on : true,
defaulting_flag : ‘!default’,
container : ‘quiz_container’,
not_finished_html : undefined,
cheating : false,
possible_display_elements :
name : ‘backgroundimage’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
if (!slide) return ”;
return $(‘<div class=”‘ +
this.name +
‘” style=”background-image: url(” +
slidethis.name +
”); height: 100%; width: 100%;position:absolute;z-index: -1″>’
);
}
},
name : ‘topimage’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
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return $(
”
);
}
},
name : ‘topvideoembed’,
finder: function(container)
return container.find(‘.’ + this.name);
,
needs_aspect_ratio : true,
create_element : function(slide)
//check aspect ratio
if (!slide.topvideoembedaspectratio) return ”;
return $(” +
slidethis.name + ”
);
}
},
name : ‘title’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
if (!slidethis.name) return ”;
return $(‘
‘ +
slidethis.name + ”
);
}
},
name : ‘middleimage’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
if (!slidethis.name) return ”;
return $(
”
);
}
},
name : ‘middlevideoembed’,
needs_aspect_ratio : true,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
//check aspect ratio
if (!slide.middlevideoembedaspectratio) return ”;
return $(” +
slidethis.name + ”
);
}
},
name : ‘subhed’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
if (!slidethis.name) return ”;
return $(” +
slidethis.name +
”
);
}
},
name : ‘text’,
finder: function(container)
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,
create_element : function(slide)
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return $(” +
slidethis.name +
”
);
}
},
name : ‘bottomimage’,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
if (!slidethis.name) return ”;
return $(”
);
}
},
name : ‘bottomvideoembed’,
needs_aspect_ratio : true,
finder: function(container)
return container.find(‘.’ + this.name);
,
create_element : function(slide)
//check aspect ratio
if (!slide.bottomvideoembedaspectratio) return ”;
return $(” +
slidethis.name + ”
);
}
}
],
init : function(quiz_data, results_data, options)
self = this;
if (options)
for ( var option in options )
selfoption = optionsoption;
}
if (typeof(quiz_data) === ‘string’)
// is a google spreadsheet.
// Will call init_data in a callback
self.load_from_google_spreadsheet(quiz_data);
else
if (!results_data)
results_data = make_default_how_you_did_htmls(quiz_data.length);
self.init_data(quiz_data, results_data);
}
return self;
},
init_data: function(quiz_data, results_data)
self.quiz_data = quiz_data;
self.results_data = results_data;
self.calculate_aspectratios(quiz_data);
self.create_cover();
for ( var i = 0; i < self.quiz_data.length; i++ )
self.append_question(i);
self.append_how_you_did_section();
self.update_how_you_did_element();
self.preload_answer_images();
},
append_how_you_did_section: function()
how_you_did_element = $(”);
cover.append(how_you_did_element);
,
load_from_google_spreadsheet: function(spreadsheet_id)
Tabletop.init(
key: spreadsheet_id,
proxy : ‘https://s3.amazonaws.com/mj-tabletop-proxy’,
callback: function(data)
var quiz_data = self.make_quiz_data_from_spreadsheet_data(data);
var results_data = self.make_results_data_from_spreadsheet_data(data, quiz_data);
self.init_data(quiz_data, results_data);
});
},
calculate_aspectratios: function(data)
for (var i = 0; i < data.length; i++)
var row = datai;
for (var k = 0; k < row.possible_answers.length; k++)
var answer = row.possible_answersk;
self.find_aspectratio_for_each_type_of_video_embed(answer);
self.find_aspectratio_for_each_type_of_video_embed(row.question);
}
},
find_aspectratio_for_each_type_of_video_embed : function(slide)
for (var i = 0; i < self.possible_display_elements.length; i++ )
var display = self.possible_display_elementsi;
if ( display.needs_aspect_ratio && slidedisplay.name )
slidedisplay.name + ‘aspectratio’ =
self.find_aspectratio(slidedisplay.name);
}
},
find_aspectratio: function(videoembed)
var height = videoembed.match(/height=”d+”/);
if (!height
height = parseInt(height0.replace(/height=”/, ”).replace(/”/, ”), 10);
var width = videoembed.match(/width=”d+”/);
if (!width || !width0)
console.log(‘Your video embed code needs a width.’);
return ”;
width = parseInt(width0.replace(/width=”/, ”).replace(/”/, ”), 10);
return (height / width)*100;
},
pull_answer_value_from_spreadsheet : function(row, value, wrong_number, correct)
correct = correct ? ‘right’ : ‘wrong’;
if (rowcorrect + wrong_number + value && rowcorrect + wrong_number + value !== self.defaulting_flag)
return (rowcorrect + wrong_number + value);
if ((self.defaulting_behavior_on && rowcorrect + wrong_number + value !== self.defaulting_flag) ||
(!self.defaulting_behavior_on && rowcorrect + wrong_number + value === self.defaulting_flag)
)
return (rowcorrect + value && rowcorrect + value !== self.defaulting_flag ?
rowcorrect + value :
(row’answer’ + value && row’answer’ + value !== self.defaulting_flag ?
row’answer’ + value :
row’question’ + value
)
);
else
return ”;
},
get_possible_answers : function(row, is_correct)
var possible_answers = [];
var right_or_wrong = (is_correct ? ‘right’ : ‘wrong’);
if (rowright_or_wrong)
possible_answers.push(self.make_possible_answer(row, ”, is_correct));
for (var i = 0; i < 10; i++ )
if (rowright_or_wrong + i)
possible_answers.push(self.make_possible_answer(row, i, is_correct));
}
return possible_answers;
},
make_possible_answer: function(row, row_number, is_correct)
var right_or_wrong = (is_correct ? ‘right’ : ‘wrong’);
var answer =
answer: rowright_or_wrong + row_number,
correct: is_correct
;
for (var i = 0; i < self.possible_display_elements.length; i++ )
var display_element = self.possible_display_elementsi.name;
answerdisplay_element = self.pull_answer_value_from_spreadsheet(
row, display_element, row_number, is_correct
);
return answer;
},
make_quiz_data_from_spreadsheet_data: function(tabletop)
var i, j, sheetName, data;
var quiz = [];
// Find a sheet that _isn’t_ named “Results”.
for (sheetName in tabletop)
if (tabletop.hasOwnProperty(sheetName) && sheetName !== ‘Results’)
break;
}
data = tabletopsheetName.elements;
for (i = 0; i < data.length; i++)
var row = datai;
var possible_wrong_answers = self.get_possible_answers(row, false);
var possible_right_answers = self.get_possible_answers(row, true);
var right_answer_placement = [];
for (j = 0; j < possible_right_answers.length; j++)
right_answer_placement.push(
Math.round(Math.random() * possible_wrong_answers.length)
);
// IMPORTANT TO SORT THIS. rather than check if a value is in, we only check the first
right_answer_placement.sort();
var possible_answers= [];
var right_answers_placed = 0;
for (j = 0; j <= possible_wrong_answers.length; j++)
while (j === right_answer_placementright_answers_placed)
//push right answer
possible_answers.push(possible_right_answersright_answers_placed);
right_answers_placed++;
if (j === possible_wrong_answers.length)
continue;
possible_answers.push(possible_wrong_answersj);
}
var question =
question :
,
possible_answers : possible_answers,
rowNumber : row.rowNumber – 1
};
for (j = 0; j < self.possible_display_elements.length; j++)
var display_value = self.possible_display_elementsj.name;
question.questiondisplay_value = row’question’ + display_value;
quiz.push(question);
}
return quiz;
},
make_results_data_from_spreadsheet_data: function(tabletop, quiz_data)
var ret = make_default_how_you_did_htmls(quiz_data.length);
var data = tabletop’Results’ ? tabletop’Results’.elements : [];
for (var i = 0; i < data.length; i++)
var index = datai.numberofrightanswers;
if (index) index = parseInt(index, 10);
if (!isNaN(index))
if (!retindex)
console.log(“Invalid number of correct answers: ” + index);
else
retindex = datai.html;
}
}
return ret;
},
append_question : function(question_index)
var question_data = self.quiz_dataquestion_index;
var question_container = $(‘<li class=”question_container row-fluid question_’ +
question_index +
‘”>’
);
question_container.append( self.build_question_element_from_row(question_data) );
question_container.append( self.build_possible_answer_elements_from_row(question_data, question_index) );
container_elem.append(question_container);
,
build_question_element_from_row: function(row)
var question_container = $(”);
for (var i = 0; i < self.possible_display_elements.length; i++)
question_container.append(
self.possible_display_elementsi.create_element(row.question)
);
return question_container;
},
build_possible_answer_elements_from_row : function(question, question_index)
var answers_container = $(”);
function bindClick(question_index, answer_index, possible_answer)
possible_answer.bind(‘click’, function()
// was it the right answer?
var was_correct = self.quiz_dataquestion_index.possible_answersanswer_index.correct;
// Add correct classes to possible answers
answers_container.find(‘.selected’).removeClass(‘selected’);
$(this).addClass(‘selected’);
$(this).removeClass(‘possible_answer’);
answers_container
.find(‘.answer_’ + answer_index)
.addClass(
was_correct ? ‘correct_answer’ : ‘wrong_answer’
);
//track how many you got right the first time
cheater_answer_trackingquestion_index = was_correct;
if ( typeof(answer_trackingquestion_index) === ‘undefined’ )
answer_trackingquestion_index = was_correct;
cover.find(‘.question_’ + question_index).addClass(
‘first_guess_’ +
(was_correct ? ‘right’ : ‘wrong’)
);
self.update_how_you_did_element();
//show new slide
self.display_answer(self.quiz_dataquestion_index, question_index, self.quiz_dataquestion_index.possible_answersanswer_index);
// track that this was selected last
self.quiz_dataquestion_index.previously_selected = self.quiz_dataquestion_index.possible_answersanswer_index;
});
}
for (var i = 0; i < question.possible_answers.length; i++)
var answer_data = question.possible_answersi;
var possible_answer = $(” +
answer_data.answer +
”);
bindClick(question_index, i, possible_answer);
answers_container.append(possible_answer);
this.note_answer_images(answer_data);
return answers_container;
},
answer_images : {},
preload_answer_images: function()
for (var url in this.answer_images)
var img=new Image();
img.src=url;
},
note_answer_images: function(answer_data)
var image_elements = ‘backgroundimage’, ‘topimage’, ‘bottomimage’;
for (var i = 0; i < image_elements.length; i++)
if (!answer_data[image_elementsi]) continue;
this.answer_images[answer_data[image_elementsi]] = true;
}
self.possible_display_elementsi.name;
},
add_display_in_correct_place: function(container, place_in_display_elements, slide)
for ( var i = place_in_display_elements; i > 0; i– )
if (self.possible_display_elementsi – 1.finder(container).length )
self.possible_display_elementsi – 1.finder(container)
.after( self.possible_display_elementsplace_in_display_elements.create_element(slide) );
return;
}
container.prepend(
self.possible_display_elementsplace_in_display_elements.create_element(slide)
);
},
display_answer : function(question, question_index, answer)
var displayed_slide = question.previously_selected ?
question.previously_selected :
question.question;
var slide = container_elem.find(‘.question_’ + question_index + ‘ .question’);
slide.addClass(‘revealed_answer’);
for (var i = 0; i < self.possible_display_elements.length; i++)
var display_value = self.possible_display_elementsi.name;
if ( answerdisplay_value !== displayed_slidedisplay_value )
if ( !answerdisplay_value )
self.possible_display_elementsi.finder(slide).remove();
else if ( !displayed_slidedisplay_value )
self.add_display_in_correct_place(slide, i, answer);
else
self.possible_display_elementsi.finder(slide).replaceWith(
self.possible_display_elementsi.create_element( answer )
);
}
}
},
create_cover : function()
cover = $(‘#’ + self.container);
container_elem = $(”);
cover.append(container_elem);
container_elem.addClass(‘quiz_container’);
container_elem.css(‘padding’, ‘0px’);
,
update_how_you_did_element: function()
var right_answers = 0;
var user_answers = self.cheating ? cheater_answer_tracking : answer_tracking;
var unfinished = false;
for (var i = 0; i < self.quiz_data.length; i++)
if (typeof(answer_trackingi) === ‘undefined’)
unfinished = true;
if (user_answersi)
right_answers++;
}
var html;
if (unfinished && typeof(this.not_finished_html) !== ‘undefined’)
html = this.not_finished_html;
else
html = this.results_dataright_answers;
how_you_did_element.html(html);
}
};
return quiz.init(quiz_data, results_data, options);
};
$.fn.quiz = function(quiz_data, results_data, options)
if (!options) options = results_data; results_data = null;
if (!options) options = ; }
options.container = this.attr(‘id’);
this.quiz = $.quiz(quiz_data, results_data, options);
return this;
};
})(jQuery);
var quiz = jQuery(‘#quiz_container’).quiz(‘0Apogs1tjp7w0dEZLUnB3QTJYVVdjUDJMUTZXU2ZzMmc’);
Photos from Metal Cats by Alexandra Crockett, published by powerHouse Books.
See original article:
Quiz: Who’s More Metal, the Cat or the Owner?
