I'm trying to prevent the page jump when clicking on a link.

CODE UPDATE

$(document).on("click", "#mapbase" , function(e) {
    e.preventDefault();
    id = window.location.hash.substring(1);
    $('.map_tabs').attr("style", "display:none");
    
    if ( $('.map_tabs#' + id).length ) {
        $('.map_tabs#' + id).attr("style", "display:block");
    } else {
        $('.map_tabs#contact-us').attr("style", "display:block")
        $('.map_tabs#contact-us h2').text(id + ' Projects Coming Soon');
    }
});

I've tried adding e.preventDefault() but it's not stopping the page jump.