remove and add class javascript button code example

Example 1: javascript remoev css class

//remove a css class from an element
document.getElementById("myElementID").classList.remove("class_name");

Example 2: jquery remove and add class

$( "#foo" ).toggleClass( 'className', addOrRemoveOptional );

//OR
if ($( "#foo" ).hasClass('className')) {
	$( "#foo" ).removeClass( 'className');
} else {
  $( "#foo" ).addClass( 'className');
}

Example 3: how to remove an class in javascript

document.getElementsByClassName("legend").style.display="none";

Example 4: add and remove class in jquery

$('#toggle li').on('click', function () {
    $(this).toggleClass('open')
});