Enkille,
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
span {
display: table-row;
}
td{
border: solid 1px #0000FF;
}
table {
border-collapse: collapse;
border: 1px solid #0000FF;
}
</style>
</head>
<body>
<table></table>
<script>
var tabelDays = {
Monday: [
"Завтрак",
"Зарядка",
"Тв",
"Душ"
],
Thuesday: [
"Завтрак"
],
Wednesdey: [
"Тв"
]
}
var table = document.querySelector("table");
Object.keys(tabelDays).forEach(function (key,c) {
var tr = table.insertRow(c);
var td = tr.insertCell(0);
td.textContent = key;
td = tr.insertCell(1);
tabelDays[key].forEach(function(key) {
var span = document.createElement("span");
span.textContent = key;
td.appendChild(span)
})
});
</script>
</body>
</html>