how to add or remove class in javascript code example

Example 1: javascript remoev css class

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

Example 2: how to remove a class from element with javascript

const div =  document.querySelector('div') // Get element from DOM
div.classList.remove('info') // Remove class "info"

Example 3: how to remove an class in javascript

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

Example 4: js remove class

const removeClass = (element, name) => {
    const pattern = new RegExp('(?:^|\\s)'+ name + '(?:\\s|$)', 'g');
    element.className = element.className.replace(pattern, "");
};