stellar.js - 为垂直滚动网站配置偏移量/对齐元素?

问题描述

我发现并正在尝试使用一个名为 stellar.js 的插件.主要是为网站创建视差效果，但是，我不追求这种效果——我追求的是它提供的另一种效果:

I have found, and am trying to use, a plugin called stellar.js. Primarily it is for creating a parallax effect for websites, but, I am not after this effect - I am after the other effect it offers:

Stellar.js 最强大的功能是它对齐元素的方式.

Stellar.js' most powerful feature is the way it aligns elements.

所有元素都将返回到它们的原始位置offset parent 与屏幕边缘相交——加或减你自己的可选偏移量.

All elements will return to their original positioning when their offset parent meets the edge of the screen—plus or minus your own optional offset.

偏移定位示例:http://markdalgleish.com/projects/stellar.js/#show-offsets .当您滚动 div 时，它会捕捉/重新对齐到浏览器的边缘.我正试图让它适用于垂直网站.

An example of the offset positioning: http://markdalgleish.com/projects/stellar.js/#show-offsets . When you scroll over a div it snaps/realigns to the edge of the browser. I am trying to get this to work for a vertical website.

由于我对 Javascript 和 jQuery 的新手了解，我运气不佳.我认为这只是将水平交换为垂直的情况.

I am not having much luck - due to my novice knowledge of Javascript and jQuery. I thought it would just be a case of swapping around the horizontals to verticals.

有没有人玩过这个插件，或者在类似的场景中使用过它，并得到任何提示?

Has anyone played with this plugin before, or used it for a similar scenario, and got any tips?

包含所有代码的 jsFiddle:http://jsfiddle.net/2SH2T/

The jsFiddle with all the code: http://jsfiddle.net/2SH2T/

以及 Javascript 代码:

And the Javascript code:

var STELLARJS = {
    init: function() {
        var self = this;
        $(function(){
            self.$sections = $('div.section').each(function(index){
                $(this).data('sectionIndex', index);
            });

            self.highlightSyntax();
            self.handleEvents();

            self.debugOffsets.init();
            self.debugOffsetParents.init();

            self.initParallax();
        });
    },
    initParallax: function() {
        var isHomePage = $('body').hasClass('home'),
            $main = $('div.main');

        if (isHomePage) {
            $main.height($main.height() + $(window).height() - 1000);
        }

        if ($.browser.msie) {
            $('body').removeAttr('data-stellar-background-ratio').append('<div class="ie-bg" />');
        }

        $(window).stellar({
            horizontalOffset: !isHomePage,
            verticalScrolling: 40
        });
    },
    highlightSyntax: function() {
        $('pre').addClass('prettyprint');
        if (window.prettyPrint !== undefined) prettyPrint();
    },
    handleEvents: function() {
        var self = this,
            //Debounce function from Underscore.js
            debounce = function(func, wait) {
                var timeout;
                return function() {
                    var context = this, args = arguments;
                    var later = function() {
                        timeout = null;
                        func.apply(context, args);
                    };
                    clearTimeout(timeout);
                    timeout = setTimeout(later, wait);
                }
            },
            handleScroll = function() {
                var scrollTop = $(window).scrollTop(),
                    sectionIndex = Math.round((scrollTop - 40) / self.$sections.first().outerHeight()),
                    $activeSection = self.$sections.eq(sectionIndex);

                if ($activeSection.length === 0) {
                    $activeSection = self.$sections.last();
                }

                if ($activeSection.length === 0) return;

                $(window).unbind('scroll.stellarsite');

                if (scrollLeft === 0) {
                    $(window).unbind('scroll.stellarsite').bind('scroll.stellarsite', debounce(handleScroll, 500));
                } else {
                    $('html,body').animate({
                        scrollLeft: $activeSection.offset().left - 40
                    }, 600, 'easeInOutExpo', function() {
                        setTimeout(function(){
                            $(window).unbind('scroll.stellarsite').bind('scroll.stellarsite', debounce(handleScroll, 500));
                        }, 10);
                    });
                }

                $(window).bind('mousewheel', function(){
                    $('html,body').stop(true, true);
                });

                $(document).bind('keydown', function(e){
                    var key = e.which;

                    if (key === 37 || key === 39) {
                        $('html,body').stop(true, true);
                    }
                });
            };

        if (window.location.href.indexOf('#show-offset-parents-default') === -1) {
            $(window).bind('scroll.stellarsite', debounce(handleScroll, 500));
        }
    },
    debugOffsets: {
        init: function() {
            this.$debug = $('#debugOffsets');

            if (window.location.href.indexOf('#show-offsets') > -1) {
                this.show();
            }
        },
        show: function() {
            this.$debug.fadeIn();
            $('body').addClass('debugOffsets');
            $('h2').append('<div class="debug-h2-label">Offset Parent (All parallax elements align when this meets the offsets)</div>');
        },
        hide: function() {
            this.debug.fadeOut;
            $('body').removeClass('debugOffsets');
        }
    },
    debugOffsetParents: {
        init: function() {
            this.$debug = $('#debugOffsets');

            if (window.location.href.indexOf('#show-offset-parents-default') > -1) {
                this.removeOffsetParents();
            }

            if (window.location.href.indexOf('#show-offset-parents') > -1) {
                this.show();
            }            
        },
        show: function() {
            this.$debug.fadeIn();

            $('body').addClass('debugOffsetParents');
            $('h2').append('<div class="debug-h2-label">New Offset Parent (All parallax elements align when this meets the offsets)</div>');
            $('h2').each(function(){
                $(this).find('div.constellation:last').append('<div class="debug-constellation-label">Default Offset Parents</div>');
            });
            $('body').addClass('debug');
        },
        removeOffsetParents: function() {
            $('body').addClass('debugOffsetParentsDefault');
            $('h2[data-stellar-offset-parent]').removeAttr('data-stellar-offset-parent');
        }
    }
};

STELLARJS.init();

推荐答案

我修改了原代码，得到了和stellarjs.com一样的效果.相反，它是垂直的:)

I modified the original code and came up with exact effect like in stellarjs.com. Instead it's vertical :)

看看:http://jsfiddle.net/E4uVD/38/

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