Переписал немного функцию, чтоб было понятнее
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span {padding-left:50px; width: 50px; height: 50px;}
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<script src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(function() {
traffic_lights = [
[{color:'green' ,time:9 },
{color:'yellow' ,time:6 },
{color:'red' ,time:19 },],
[{color:'green' ,time:9 },
{color:'yellow' ,time:6 },
{color:'red' ,time:19 },],
[{color:'green',time:30},
{color:'yellow',time:6},
{color:'red',time:17},],
[{color:'green',time:30},
{color:'yellow',time:6},
{color:'red',time:17},],
[{color:'red',time:29},
{color:'yellow',time:6},
{color:'red',time:27},],
[{color:'red',time:29},
{color:'yellow',time:6},
{color:'red',time:27},],
[{color:'green',time:32},
{color:'yellow',time:6},
{color:'red',time:40},],
[{color:'green',time:32},
{color:'yellow',time:6},
{color:'red',time:40},],
[{color:'green',time:37},
{color:'yellow',time:6},
{color:'red',time:33},],
[{color:'green',time:37},
{color:'yellow',time:6},
{color:'red',time:33},],
[{color:'red',time:23},
{color:'yellow',time:3},
{color:'green',time:80},
{color:'yellow',time:6},],
[{color:'red',time:56},
{color:'yellow',time:3},
{color:'green',time:21},
{color:'yellow',time:6},],
]
var traffic_locations = [
{x1:47,y1:63,x2:70,y2:84},
{x1:47,y1:103,x2:70,y2:124},
{x1:47,y1:194,x2:70,y2:215},
{x1:47,y1:234,x2:70,y2:255},
{x1:47,y1:363,x2:70,y2:384},
{x1:47,y1:403,x2:70,y2:424},
{x1:47,y1:578,x2:70,y2:599},
{x1:47,y1:618,x2:70,y2:639},
{x1:47,y1:709,x2:70,y2:730},
{x1:47,y1:749,x2:70,y2:770},
{x1:47,y1:878,x2:70,y2:899},
{x1:47,y1:918,x2:70,y2:939},
]
for (var a = 0, f; a < traffic_lights.length; a++) {
var g = traffic_lights[a];
f = $("#c" + a);
(function (el, colorsForThis, num) {
var b = 0,
time = 0;
return function s() {
if(!time) {
var coord = traffic_locations[num];//перехожу к координатам светофоров
var toWrite = '';
toWrite += '(' + num; //номер светофора
toWrite += ' - ' + coord.x1 + '.' + coord.y1 + '.' + coord.x2 + '.' + coord.y2 + ' - '; //координаты
toWrite += colorsForThis[b].color + ') '//цвет
$('#log').html($('#log').html() + toWrite);
el.css({"background-color": colorsForThis[b].color});
time = colorsForThis[b].time;
b = ++b % colorsForThis.length;
}
el.html(time);
time--;
window.setTimeout(s, 1e3);
}
})(f, g, a)();
}
})
</script>
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<span id="c0"></span>
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