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script.js
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script.js
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var table;
$('button').click(function (e) {
window.stop_that = true;
$('button').remove();
$.fn.dataTable.numString(/\d+ ms/);
table = $("table").DataTable({
"paging": false,
"info": false,
});
if (e.ctrlKey || e.altKey || e.shiftKey) {
window.open('https://www.youtube.com/watch?v=QB0Oc0GxB2E');
}
})
regions.forEach(function (region, region_id) {
var $tr = $('<tr>').addClass('region').attr('id', 'region_' + region_id).append([
$('<td>').addClass('info region_index').html(region_id + 1),
$('<td>').addClass('info region_name'),
$('<td>').addClass('info region_code'),
$('<td>').addClass('stats region_mean'),
$('<td>').addClass('stats region_median'),
$('<td>').addClass('stats region_lowest'),
$('<td>').addClass('stats region_highest')
]);
$tr.find('td.region_name').html(`${region.text1}` + (region.text2.length > 0 ? ` (<b>${region.text2}</b>)` : ""));
$tr.find('td.region_code').html("<i>" + (region.code || region.text2) + "</i>");
$tr.find('td.stats').text("-");
$('tbody').append($tr);
});
$(document).ready(function () {
// Otherwise browser keeps showing loading sign
setTimeout(function () {
ping_regions(-1, 0);
}, 500);
});
function ping_region(region_id, callback) {
var startTime = Date.now();
var image = new Image();
var a = function () {
var endTime = Date.now();
var timeElapsed = endTime - startTime;
if (undefined !== callback) {
callback(timeElapsed);
}
}
image.onerror = a;
image.onload = a;
// console.log(src(region_id));
image.src = src(region_id);
}
function ping_regions(iteration_id, region_id) {
ping_region(region_id, function (timeElapsed) {
if (0 === region_id) {
var $th = $('<th>').addClass("test test_" + iteration_id).text("Test " + (iteration_id + 1));
var $td = $('<td>').addClass("test test_" + iteration_id).text('-');
$('table').find('tr.heading').append($th);
$('table').find('tr.region').append($td);
}
var $tr = $('table').find('tr.region#region_' + region_id);
var $td = $tr.find('td.test.test_' + iteration_id);
if (timeElapsed > 0) {
$td.text(timeElapsed + " ms");
$td.data('latency', timeElapsed);
} else {
$td.text("FAILED");
$td.data('latency', 0);
}
var values = [];
$tr.find('td.test').each(function () {
var value = $(this).data('latency');
if (value > 0) {
values.push(value);
}
});
$tr.find('td.region_mean').data('latency', stats.mean(values));
$tr.find('td.region_mean').html("<b>" + stats.mean(values).toFixed(0) + " ms</b>");
$tr.find('td.region_median').data('latency', stats.median(values));
$tr.find('td.region_median').html("<b>" + stats.median(values).toFixed(0) + " ms</b>");
$tr.find('td.region_lowest').data('latency', stats.lowest(values));
$tr.find('td.region_lowest').html("<b>" + stats.lowest(values).toFixed(0) + " ms</b>");
$tr.find('td.region_highest').data('latency', stats.highest(values));
$tr.find('td.region_highest').html("<b>" + stats.highest(values).toFixed(0) + " ms</b>");
highlight_stats(['region_mean', 'region_median', 'region_lowest', 'region_highest', 'test_' + iteration_id]);
region_id++;
if (region_id === regions.length) {
region_id = 0;
if (iteration_id < 0) {
$('table').find('.test').filter('td,th').remove();
$('button').attr('disabled', false);
} else {
highlight_stats(['test_' + iteration_id]);
}
iteration_id++;
}
if (true !== window.stop_that || region_id !== 0) {
ping_regions(iteration_id, region_id);
} else {
}
});
}
function highlight_stats(arr) {
arr.forEach(function (column) {
var $rows = $('table').find('td.' + column);
$rows = $rows.filter(function () {
return (undefined !== $(this).data('latency'));
});
$rows.sort(function (a, b) {
if ($(a).data('latency') < $(b).data('latency')) {
return -1;
} else if ($(a).data('latency') > $(b).data('latency')) {
return 1;
} else {
return 0;
}
});
var least_latency = $rows.first().data('latency');
var most_latency = $rows.last().data('latency');
var diff_latency = most_latency - least_latency;
$rows.each(function () {
var latency = $(this).data('latency');
$(this).css('background-color', 'hsl(' + ((most_latency - latency) * 135 / diff_latency) + ", 100%, 50%)");
});
});
}
var stats = {
mean: function (values) {
var sum = 0;
values.forEach(function (value) {
sum = sum + value;
});
return sum / values.length;
},
median: function (values) {
values.sort(function (a, b) {
return a - b;
});
var half = Math.floor(values.length / 2);
if (values.length % 2) {
return values[half];
} else {
return (values[half - 1] + values[half]) / 2.0;
}
},
lowest: function (values) {
return Math.min.apply(null, values);
},
highest: function (values) {
return Math.max.apply(null, values);
}
}