Scrollspy显示页面上我不使用jquery代码的位置

Am currently trying to add scroll spy to my WordPress one page layout with the following code but nothing happens when I scroll down the page.

我目前正在尝试使用以下代码将滚动间谍添加到我的WordPress页面布局中,但当我向下滚动页面时没有任何反应。

The only thing that code is doing,is to remove the active class for.

代码唯一要做的就是删除活动类。

(function( $ ){
    $("nav ul li a").addClass("marker");    
    var navLinks = $('nav ul li a'),
        navH = $('nav').height(),
        section = $('section'),
        documentEl = $(document);        
        documentEl.on('scroll', function() {            
            var currentScrollPos = documentEl.scrollTop();            
            section.each(function() {
               var self = $(this);
               if (self.offset().top < (currentScrollPos + navH ) && (currentScrollPos + navH) < (self.offset().top + self.outerHeight())) {
                   var targetClass = '.' +self.attr('class') + 'marker';
                   navLinks.removeClass('active');
                   $(targetClass).addClass('active');
               }                
            });            
        });
})(jQuery);

I simply added a dark background to active class in order to see he menu item changing color when I scroll down each section.

我只是在活动类中添加了一个深色背景,以便在向下滚动每个部分时看到菜单项改变颜色。

.active{
    background-color:#000;
}

How can I apply the scroll spy properly?

如何正确应用滚动间谍?

1 个解决方案

#1

Try to wrap your js in dom ready statement

尝试将你的js包装在dom ready语句中

jQuery(function(){
    $("nav ul li a").addClass("marker");    
    var navLinks = $('nav ul li a'),
        navH = $('nav').height(),
        section = $('section'),
        documentEl = $(document);        
        documentEl.on('scroll', function() {            
            var currentScrollPos = documentEl.scrollTop();            
            section.each(function() {
               var self = $(this);
               if (self.offset().top < (currentScrollPos + navH ) && (currentScrollPos + navH) < (self.offset().top + self.outerHeight())) {
                   var targetClass = '.' +self.attr('class') + 'marker';
                   navLinks.removeClass('active');
                   $(targetClass).addClass('active');
               }                
            });            
        });
});