完全坚持将JQuery加载到WordPress网站

Question

this may seem like a simple error but I've been stuck on it.

I am running a WordPress installation with a script that I found which hides the header based on scroll. They script worked perfectly while on the page itself enclosed in tags until I started loading it into the WordPress theme with a separate file.

wp_enqueue_script( 'greycanary-effects', get_template_directory_uri() . '/js/effects.js', array(), '20120206', true );

And the script...

( function() {
    var didScroll;
    var lastScrollTop = 0;
    var delta = 5;
    var navbarHeight = $('.main-navigation').outerHeight();

    jQuery(window).scroll(function(event){
        didScroll = true;
    });

    setInterval(function() {
        if (didScroll) {
            hasScrolled();
            didScroll = false;
        }
    }, 250);

    function hasScrolled() {
        var st = $(this).scrollTop();

        // Make sure they scroll more than delta
        if(Math.abs(lastScrollTop - st) <= delta)
            return;

        // If they scrolled down and are past the navbar, add class .nav-up.
        // This is necessary so you never see what is "behind" the navbar.
        if (st > lastScrollTop && st > navbarHeight){
            // Scroll Down
            $('.main-navigation').removeClass('nav-down').addClass('nav-up');
        } else {
            // Scroll Up
            if(st + $(window).height() < $(document).height()) {
                $('.main-navigation').removeClass('nav-up').addClass('nav-down');
            }
        }

        lastScrollTop = st;
    };
});

Answer 1

In the wordpress jquery you cannot use the $ sign they use this to prevent conflicting javascript. Use jQuery instead. I see you did use jQuery but on some lines you used the dollar sign