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You're asked to build an HTML table with JavaScript. Starting from an array of "mountains" your task is to generate the table assigning every key to a column and one row per object. As you can see the table has a thead (table head) containing a tr (table row) which in turn contains three th (table header).
Slightly shorter code using insertRow and insertCell:
function tableCreate() {
const body = document.body,
tbl = document.createElement('table');
tbl.style.width = '100px';
tbl.style.border = '1px solid black';
for (let i = 0; i < 3; i++) {
const tr = tbl.insertRow();
for (let j = 0; j < 2; j++) {
if (i === 2 && j === 1) {
break;
} else {
const td = tr.insertCell();
td.appendChild(document.createTextNode(`Cell I${i}/J${j}`));
td.style.border = '1px solid black';
if (i === 1 && j === 1) {
td.setAttribute('rowSpan', '2');
}
}
}
}
body.appendChild(tbl);
}
tableCreate();Also, this doesn't use some "bad practices", such as setting a border attribute instead of using CSS, and it accesses the body through document.body instead of document.getElementsByTagName('body')[0];
This should work (from a few alterations to your code above).
function tableCreate() {
var body = document.getElementsByTagName('body')[0];
var tbl = document.createElement('table');
tbl.style.width = '100%';
tbl.setAttribute('border', '1');
var tbdy = document.createElement('tbody');
for (var i = 0; i < 3; i++) {
var tr = document.createElement('tr');
for (var j = 0; j < 2; j++) {
if (i == 2 && j == 1) {
break
} else {
var td = document.createElement('td');
td.appendChild(document.createTextNode('\u0020'))
i == 1 && j == 1 ? td.setAttribute('rowSpan', '2') : null;
tr.appendChild(td)
}
}
tbdy.appendChild(tr);
}
tbl.appendChild(tbdy);
body.appendChild(tbl)
}
tableCreate();function addTable() {
var myTableDiv = document.getElementById("myDynamicTable");
var table = document.createElement('TABLE');
table.border = '1';
var tableBody = document.createElement('TBODY');
table.appendChild(tableBody);
for (var i = 0; i < 3; i++) {
var tr = document.createElement('TR');
tableBody.appendChild(tr);
for (var j = 0; j < 4; j++) {
var td = document.createElement('TD');
td.width = '75';
td.appendChild(document.createTextNode("Cell " + i + "," + j));
tr.appendChild(td);
}
}
myTableDiv.appendChild(table);
}
addTable();<div id="myDynamicTable"></div><html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<table id="myTable" cellpadding="2" cellspacing="2" border="1" onclick="tester()"></table>
<script>
var student;
for (var j = 0; j < 10; j++) {
student = {
name: "Name" + j,
rank: "Rank" + j,
stuclass: "Class" + j,
};
var table = document.getElementById("myTable");
var row = table.insertRow(j);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
var cell3 = row.insertCell(2);
cell1.innerHTML = student.name,
cell2.innerHTML = student.rank,
cell3.innerHTML = student.stuclass;
}
</script>
</body>
</html>
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