Why would you need session storage for this, and any server-side operation at all? This is the action which happens on the same page which does not need a postback. There is nothing to store in session data. You can just use JavaScript to read the control
value
and write this value elsewhere, such as in:
var myTextBox = document.getElementById("textBox");
var someParagraph = document.getElementById("someParagraph");
someParagraph.innerHTML = myTextBox.value;
Something like that…
—SA