how to change display from none to showing code example

Example: display none in jquery

// The correct way to do this is to use show and hide:
<div id="check"> 
  <h3> Hello we check hide / show by jquery </h3>
</div>

//Syntex
$('#yourid').hide();
$('#yourid').show();

// Example 
$('#check').hide();
$('#check').show();

// Alternate way is to use the jQuery by css method:

//Syntex
$("#yourid").css("display", "none");
$("#yourid").css("display", "block");

//Example
$("#clear").css("display", "none");
$("#clear").css("display", "block");