0

我正在使用锚点和部分创建一个单页网站。例如，当用户单击Photography时，jQuery 将导航到该特定部分。

JavaScript / jQuery :

// When you click on an <a> that has a '#'
$('nav#primary-navwrapper a[href^="#"], #sitemap a[href^="#"]').bind('click.smoothscroll',function (e) {
    // Prevent from default action to intitiate
    e.preventDefault();
    // Targets the part of the address that comes after the '#'
    var target = this.hash;
        $target = $(target);
    $('html, body').stop().animate({
        // The .offset() method allows us to retrieve the current position of an element relative to the document.
        // Here we are using it to find the position of the target, which we defined earlier as the section of the address that will come after the '#'
        'scrollTop': $target.offset().top - $('#header').outerHeight()
    }, 500, 'swing', function () {
        window.location.hash = target;
    });
}); 

/**
 * This part handles the highlighting functionality.
 * We use the scroll functionality again, some array creation and 
 * manipulation, class adding and class removing, and conditional testing
 */
var aChildren = $("#primary-navwrapper li").children(); // find the a children of the list items
var aArray = []; // create the empty aArray
for (var i=0; i < aChildren.length; i++) {    
    var aChild = aChildren[i];
    var ahref = $(aChild).attr('href');
    aArray.push(ahref);
} // this for loop fills the aArray with attribute href values

$(window).scroll(function(){
    var windowPos = $(window).scrollTop(); // get the offset of the window from the top of page
    var windowHeight = $(window).height(); // get the height of the window
    var docHeight = $(document).height();

    for (var i=0; i < aArray.length; i++) {
        var theID = aArray[i];
        var divPos = $(theID).offset().top - $('#header').outerHeight(); // get the offset of the div from the top of page
        var divHeight = $(theID).height(); // get the height of the div in question
        if (windowPos >= divPos && windowPos < (divPos + divHeight)) {
            $("a[href='" + theID + "']").addClass("current");
        } else {
            $("a[href='" + theID + "']").removeClass("current");
        }
    }

    if(windowPos + windowHeight == docHeight) {
        if (!$("nav li:last-child a").hasClass("nav-active")) {
            var navActiveCurrent = $(".nav-active").attr("href");
            $("a[href='" + navActiveCurrent + "']").removeClass("nav-active");
            $("nav li:last-child a").addClass("nav-active");
        }
    }
});

这适用于所有浏览器，但我更改了以下行：

'scrollTop': $target.offset().top

至：

'scrollTop': $target.offset().top - $('#header').outerHeight()

（有关线路顺序，请参阅http://snippi.com/s/maod4ud。这是在第 37 行）

为了补偿我的position:fixed标题，我减去了标题的高度。如果不这样做，标题会与内容重叠。

不幸的是，这在 Firefox 和 IE 中无法正常工作。您会看到第一个转到正确的位置 - 标题高度，因此标题位于内容上方，但随后他再次像以前一样站立。（内容上方的标题）

我该如何解决这个问题？

4

0 回答 0