You mention 'store', if you really mean storing value on client side, then read out
Beginner's Guide to HTML5 & CSS3 - Web Storage Wizardry[
^]
Otherwise, if you mean to create multiple text boxes dynamically on the client side, use javascript, e.g.
<!DOCTYPE html>
<html>
<body>
<table id="myTable" style="border: 1px solid black">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
</table>
<br>
<button onclick="addTextbox()">Add Text Box</button>
<script>
function addTextbox() {
var table = document.getElementById("myTable");
var row = table.insertRow(0);
var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
cell1.innerHTML = "<input type='text'>";
cell2.innerHTML = "NEW CELL2";
}
</script>
</body>
</html>