how to hide and show in html element dynamically

Question

html input element hide and show using link tag. example:yahoo mail Bcc hide and show

Answer 1

This is done in Javascript.

For simple Javascript, i.e. without using jQuery you can do that:

document.getElementById("idOfElement").style.display = "none"; // to hide    
document.getElementById("idOfElement").style.display = "block"; // to show

Here is a link with the possible values for this display CSS element.

Answer 2

yahoo does this with javascript.

using plaing JS on the onlick of a link:

document.getElementById('someDiv').style.display = 'block'; //or 'none' to hide

using a JS library like jQuery:

$('#someDiv').show(); //or .hide();