Create dynamic html table using javascript from simple array

Question

I want to write some JavaScript to create a simple HTML table from an array that just contains numbers:

var array = [1,2,3,4,5,6,7,8,9,10];

Answer 1

You could iterate the array and build a new row if the remainder with 5 is zero.

var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
    tr;

array.forEach((v, i) => {
    var td = document.createElement('td');
    
    if (!(i % 5)) {
        tr = document.createElement('tr');
        document.getElementById('table0').appendChild(tr);
    }
    td.appendChild(document.createTextNode(v));
    tr.appendChild(td);
});

<table id="table0"></table>

Answer 2

var array = [1,2,3,4,5,6,7,8,9,10];

var result = "<table border=1>";
result += "<tr>";
for (var j = 0; j < array.length; j++) {
  result += "<td>" + array[j] + "</td>";
  if ((j + 1) % 5 == 0) {
    result += "</tr><tr>";
  }
}
result += "</tr>";
result += "</table>";

document.body.innerHTML = result;

Please give it a try if that works

Answer 3

How about trying something like this? Explanations in the code. Also, untested so you might need to make some adjustments.

var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
// start the table
var table = document.createElement("table");
var currentRow;
for (var i = 0; i < array.length; i++) {
  // put items in.
  var item = document.createElement("td");
  item.innerHTML = array[i];
  // if we are at the 
  if (i % 5 === 0) {
    // if it's not the first time you're creating row - first put the prev row into the table, then reassign it to a new table row.
    if (typeof currentRow !== 'undefined') table.appendChild(currentRow);
  currentRow.appendChild(item);

    currentRow = document.createElement("tr");
  }

}
// put the table into the body element, for example.
document.getElementsByTagName('body')[0].appendChild(table);