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| <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script> | | <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script> |
− | <script type="text/javascript">
| + | <script type="text/javascript"> |
− | | + | $(function() { |
− | (function (root, factory) { | + | $('a[href*=#]:not([href=#])').click(function() { |
− | if ( typeof define === 'function' && define.amd ) {
| + | if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) { |
− | define([], factory(root));
| + | var target = $(this.hash); |
− | } else if ( typeof exports === 'object' ) {
| + | target = target.length ? target : $('[name=' + this.hash.slice(1) +']'); |
− | module.exports = factory(root);
| + | if (target.length) { |
− | } else {
| + | $('html,body').animate({ |
− | root.smoothScroll = factory(root);
| + | scrollTop: target.offset().top |
− | }
| + | }, 1000); |
− | })(typeof global !== 'undefined' ? global : this.window || this.global, function (root) {
| + | return false; |
− | | + | } |
− | 'use strict';
| + | } |
− | | + | |
− | //
| + | |
− | // Variables
| + | |
− | //
| + | |
− | | + | |
− | var smoothScroll = {}; // Object for public APIs
| + | |
− | var supports = 'querySelector' in document && 'addEventListener' in root; // Feature test
| + | |
− | var settings, eventTimeout, fixedHeader, headerHeight;
| + | |
− | | + | |
− | // Default settings
| + | |
− | var defaults = {
| + | |
− | selector: '[data-scroll]',
| + | |
− | selectorHeader: '[data-scroll-header]',
| + | |
− | speed: 500,
| + | |
− | easing: 'easeInOutCubic',
| + | |
− | offset: 0,
| + | |
− | updateURL: true,
| + | |
− | callback: function () {}
| + | |
− | };
| + | |
− | | + | |
− | | + | |
− | //
| + | |
− | // Methods
| + | |
− | //
| + | |
− | | + | |
− | /**
| + | |
− | * Merge two or more objects. Returns a new object.
| + | |
− | * @private
| + | |
− | * @param {Boolean} deep If true, do a deep (or recursive) merge [optional]
| + | |
− | * @param {Object} objects The objects to merge together
| + | |
− | * @returns {Object} Merged values of defaults and options
| + | |
− | */
| + | |
− | var extend = function () {
| + | |
− | | + | |
− | // Variables
| + | |
− | var extended = {};
| + | |
− | var deep = false;
| + | |
− | var i = 0;
| + | |
− | var length = arguments.length;
| + | |
− | | + | |
− | // Check if a deep merge
| + | |
− | if ( Object.prototype.toString.call( arguments[0] ) === '[object Boolean]' ) {
| + | |
− | deep = arguments[0];
| + | |
− | i++;
| + | |
− | }
| + | |
− | | + | |
− | // Merge the object into the extended object
| + | |
− | var merge = function (obj) {
| + | |
− | for ( var prop in obj ) {
| + | |
− | if ( Object.prototype.hasOwnProperty.call( obj, prop ) ) {
| + | |
− | // If deep merge and property is an object, merge properties
| + | |
− | if ( deep && Object.prototype.toString.call(obj[prop]) === '[object Object]' ) {
| + | |
− | extended[prop] = extend( true, extended[prop], obj[prop] );
| + | |
− | } else {
| + | |
− | extended[prop] = obj[prop];
| + | |
− | }
| + | |
− | }
| + | |
− | }
| + | |
− | };
| + | |
− | | + | |
− | // Loop through each object and conduct a merge
| + | |
− | for ( ; i < length; i++ ) {
| + | |
− | var obj = arguments[i];
| + | |
− | merge(obj);
| + | |
− | }
| + | |
− | | + | |
− | return extended;
| + | |
− | | + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Get the height of an element.
| + | |
− | * @private
| + | |
− | * @param {Node} elem The element to get the height of
| + | |
− | * @return {Number} The element's height in pixels
| + | |
− | */
| + | |
− | var getHeight = function ( elem ) {
| + | |
− | return Math.max( elem.scrollHeight, elem.offsetHeight, elem.clientHeight );
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Get the closest matching element up the DOM tree.
| + | |
− | * @private
| + | |
− | * @param {Element} elem Starting element
| + | |
− | * @param {String} selector Selector to match against (class, ID, data attribute, or tag)
| + | |
− | * @return {Boolean|Element} Returns null if not match found
| + | |
− | */
| + | |
− | var getClosest = function ( elem, selector ) {
| + | |
− | | + | |
− | // Variables
| + | |
− | var firstChar = selector.charAt(0);
| + | |
− | var supports = 'classList' in document.documentElement;
| + | |
− | var attribute, value;
| + | |
− | | + | |
− | // If selector is a data attribute, split attribute from value
| + | |
− | if ( firstChar === '[' ) {
| + | |
− | selector = selector.substr(1, selector.length - 2);
| + | |
− | attribute = selector.split( '=' );
| + | |
− | | + | |
− | if ( attribute.length > 1 ) {
| + | |
− | value = true;
| + | |
− | attribute[1] = attribute[1].replace( /"/g, '' ).replace( /'/g, '' );
| + | |
− | }
| + | |
− | }
| + | |
− | | + | |
− | // Get closest match
| + | |
− | for ( ; elem && elem !== document; elem = elem.parentNode ) {
| + | |
− | | + | |
− | // If selector is a class
| + | |
− | if ( firstChar === '.' ) {
| + | |
− | if ( supports ) {
| + | |
− | if ( elem.classList.contains( selector.substr(1) ) ) {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | } else {
| + | |
− | if ( new RegExp('(^|\\s)' + selector.substr(1) + '(\\s|$)').test( elem.className ) ) {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | }
| + | |
− | }
| + | |
− | | + | |
− | // If selector is an ID
| + | |
− | if ( firstChar === '#' ) {
| + | |
− | if ( elem.id === selector.substr(1) ) {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | }
| + | |
− | | + | |
− | // If selector is a data attribute
| + | |
− | if ( firstChar === '[' ) {
| + | |
− | if ( elem.hasAttribute( attribute[0] ) ) {
| + | |
− | if ( value ) {
| + | |
− | if ( elem.getAttribute( attribute[0] ) === attribute[1] ) {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | } else {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | }
| + | |
− | }
| + | |
− | | + | |
− | // If selector is a tag
| + | |
− | if ( elem.tagName.toLowerCase() === selector ) {
| + | |
− | return elem;
| + | |
− | }
| + | |
− | | + | |
− | }
| + | |
− | | + | |
− | return null;
| + | |
− | | + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Escape special characters for use with querySelector
| + | |
− | * @private
| + | |
− | * @param {String} id The anchor ID to escape
| + | |
− | * @author Mathias Bynens
| + | |
− | * @link https://github.com/mathiasbynens/CSS.escape
| + | |
− | */
| + | |
− | var escapeCharacters = function ( id ) {
| + | |
− | var string = String(id);
| + | |
− | var length = string.length;
| + | |
− | var index = -1;
| + | |
− | var codeUnit;
| + | |
− | var result = '';
| + | |
− | var firstCodeUnit = string.charCodeAt(0);
| + | |
− | while (++index < length) {
| + | |
− | codeUnit = string.charCodeAt(index);
| + | |
− | // Note: there’s no need to special-case astral symbols, surrogate
| + | |
− | // pairs, or lone surrogates.
| + | |
− | | + | |
− | // If the character is NULL (U+0000), then throw an
| + | |
− | // `InvalidCharacterError` exception and terminate these steps.
| + | |
− | if (codeUnit === 0x0000) {
| + | |
− | throw new InvalidCharacterError(
| + | |
− | 'Invalid character: the input contains U+0000.'
| + | |
− | );
| + | |
− | }
| + | |
− | | + | |
− | if (
| + | |
− | // If the character is in the range [\1-\1F] (U+0001 to U+001F) or is
| + | |
− | // U+007F, […]
| + | |
− | (codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F ||
| + | |
− | // If the character is the first character and is in the range [0-9]
| + | |
− | // (U+0030 to U+0039), […]
| + | |
− | (index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) ||
| + | |
− | // If the character is the second character and is in the range [0-9]
| + | |
− | // (U+0030 to U+0039) and the first character is a `-` (U+002D), […]
| + | |
− | (
| + | |
− | index === 1 &&
| + | |
− | codeUnit >= 0x0030 && codeUnit <= 0x0039 &&
| + | |
− | firstCodeUnit === 0x002D
| + | |
− | )
| + | |
− | ) {
| + | |
− | // http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point
| + | |
− | result += '\\' + codeUnit.toString(16) + ' ';
| + | |
− | continue;
| + | |
− | }
| + | |
− | | + | |
− | // If the character is not handled by one of the above rules and is
| + | |
− | // greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or
| + | |
− | // is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to
| + | |
− | // U+005A), or [a-z] (U+0061 to U+007A), […]
| + | |
− | if (
| + | |
− | codeUnit >= 0x0080 ||
| + | |
− | codeUnit === 0x002D ||
| + | |
− | codeUnit === 0x005F ||
| + | |
− | codeUnit >= 0x0030 && codeUnit <= 0x0039 ||
| + | |
− | codeUnit >= 0x0041 && codeUnit <= 0x005A ||
| + | |
− | codeUnit >= 0x0061 && codeUnit <= 0x007A
| + | |
− | ) {
| + | |
− | // the character itself
| + | |
− | result += string.charAt(index);
| + | |
− | continue;
| + | |
− | }
| + | |
− | | + | |
− | // Otherwise, the escaped character.
| + | |
− | // http://dev.w3.org/csswg/cssom/#escape-a-character
| + | |
− | result += '\\' + string.charAt(index);
| + | |
− | | + | |
− | }
| + | |
− | return result;
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Calculate the easing pattern
| + | |
− | * @private
| + | |
− | * @link https://gist.github.com/gre/1650294
| + | |
− | * @param {String} type Easing pattern
| + | |
− | * @param {Number} time Time animation should take to complete
| + | |
− | * @returns {Number}
| + | |
− | */
| + | |
− | var easingPattern = function ( type, time ) {
| + | |
− | var pattern;
| + | |
− | if ( type === 'easeInQuad' ) pattern = time * time; // accelerating from zero velocity
| + | |
− | if ( type === 'easeOutQuad' ) pattern = time * (2 - time); // decelerating to zero velocity
| + | |
− | if ( type === 'easeInOutQuad' ) pattern = time < 0.5 ? 2 * time * time : -1 + (4 - 2 * time) * time; // acceleration until halfway, then deceleration
| + | |
− | if ( type === 'easeInCubic' ) pattern = time * time * time; // accelerating from zero velocity
| + | |
− | if ( type === 'easeOutCubic' ) pattern = (--time) * time * time + 1; // decelerating to zero velocity
| + | |
− | if ( type === 'easeInOutCubic' ) pattern = time < 0.5 ? 4 * time * time * time : (time - 1) * (2 * time - 2) * (2 * time - 2) + 1; // acceleration until halfway, then deceleration
| + | |
− | if ( type === 'easeInQuart' ) pattern = time * time * time * time; // accelerating from zero velocity
| + | |
− | if ( type === 'easeOutQuart' ) pattern = 1 - (--time) * time * time * time; // decelerating to zero velocity
| + | |
− | if ( type === 'easeInOutQuart' ) pattern = time < 0.5 ? 8 * time * time * time * time : 1 - 8 * (--time) * time * time * time; // acceleration until halfway, then deceleration
| + | |
− | if ( type === 'easeInQuint' ) pattern = time * time * time * time * time; // accelerating from zero velocity
| + | |
− | if ( type === 'easeOutQuint' ) pattern = 1 + (--time) * time * time * time * time; // decelerating to zero velocity
| + | |
− | if ( type === 'easeInOutQuint' ) pattern = time < 0.5 ? 16 * time * time * time * time * time : 1 + 16 * (--time) * time * time * time * time; // acceleration until halfway, then deceleration
| + | |
− | return pattern || time; // no easing, no acceleration
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Calculate how far to scroll
| + | |
− | * @private
| + | |
− | * @param {Element} anchor The anchor element to scroll to
| + | |
− | * @param {Number} headerHeight Height of a fixed header, if any
| + | |
− | * @param {Number} offset Number of pixels by which to offset scroll
| + | |
− | * @returns {Number}
| + | |
− | */
| + | |
− | var getEndLocation = function ( anchor, headerHeight, offset ) {
| + | |
− | var location = 0;
| + | |
− | if (anchor.offsetParent) {
| + | |
− | do {
| + | |
− | location += anchor.offsetTop;
| + | |
− | anchor = anchor.offsetParent;
| + | |
− | } while (anchor);
| + | |
− | }
| + | |
− | location = location - headerHeight - offset;
| + | |
− | return location >= 0 ? location : 0;
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Determine the document's height
| + | |
− | * @private
| + | |
− | * @returns {Number}
| + | |
− | */
| + | |
− | var getDocumentHeight = function () {
| + | |
− | return Math.max(
| + | |
− | root.document.body.scrollHeight, root.document.documentElement.scrollHeight,
| + | |
− | root.document.body.offsetHeight, root.document.documentElement.offsetHeight,
| + | |
− | root.document.body.clientHeight, root.document.documentElement.clientHeight
| + | |
− | );
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Convert data-options attribute into an object of key/value pairs
| + | |
− | * @private
| + | |
− | * @param {String} options Link-specific options as a data attribute string
| + | |
− | * @returns {Object}
| + | |
− | */
| + | |
− | var getDataOptions = function ( options ) {
| + | |
− | return !options || !(typeof JSON === 'object' && typeof JSON.parse === 'function') ? {} : JSON.parse( options );
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Update the URL
| + | |
− | * @private
| + | |
− | * @param {Element} anchor The element to scroll to
| + | |
− | * @param {Boolean} url Whether or not to update the URL history
| + | |
− | */
| + | |
− | var updateUrl = function ( anchor, url ) {
| + | |
− | if ( root.history.pushState && (url || url === 'true') ) {
| + | |
− | root.history.pushState( null, null, [root.location.protocol, '//', root.location.host, root.location.pathname, root.location.search, anchor].join('') );
| + | |
− | }
| + | |
− | };
| + | |
− | | + | |
− | var getHeaderHeight = function ( header ) {
| + | |
− | return header === null ? 0 : ( getHeight( header ) + header.offsetTop );
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Start/stop the scrolling animation
| + | |
− | * @public
| + | |
− | * @param {Element} toggle The element that toggled the scroll event
| + | |
− | * @param {Element} anchor The element to scroll to
| + | |
− | * @param {Object} options
| + | |
− | */
| + | |
− | smoothScroll.animateScroll = function ( toggle, anchor, options ) {
| + | |
− | | + | |
− | // Options and overrides
| + | |
− | var overrides = getDataOptions( toggle ? toggle.getAttribute('data-options') : null );
| + | |
− | var settings = extend( settings || defaults, options || {}, overrides ); // Merge user options with defaults
| + | |
− | anchor = '#' + escapeCharacters(anchor.substr(1)); // Escape special characters and leading numbers
| + | |
− | | + | |
− | // Selectors and variables
| + | |
− | var anchorElem = anchor === '#' ? root.document.documentElement : root.document.querySelector(anchor);
| + | |
− | var startLocation = root.pageYOffset; // Current location on the page
| + | |
− | if ( !fixedHeader ) { fixedHeader = root.document.querySelector( settings.selectorHeader ); } // Get the fixed header if not already set
| + | |
− | if ( !headerHeight ) { headerHeight = getHeaderHeight( fixedHeader ); } // Get the height of a fixed header if one exists and not already set
| + | |
− | var endLocation = getEndLocation( anchorElem, headerHeight, parseInt(settings.offset, 10) ); // Scroll to location
| + | |
− | var animationInterval; // interval timer
| + | |
− | var distance = endLocation - startLocation; // distance to travel
| + | |
− | var documentHeight = getDocumentHeight();
| + | |
− | var timeLapsed = 0;
| + | |
− | var percentage, position;
| + | |
− | | + | |
− | // Update URL
| + | |
− | updateUrl(anchor, settings.updateURL);
| + | |
− | | + | |
− | /**
| + | |
− | * Stop the scroll animation when it reaches its target (or the bottom/top of page)
| + | |
− | * @private
| + | |
− | * @param {Number} position Current position on the page
| + | |
− | * @param {Number} endLocation Scroll to location
| + | |
− | * @param {Number} animationInterval How much to scroll on this loop
| + | |
− | */
| + | |
− | var stopAnimateScroll = function (position, endLocation, animationInterval) {
| + | |
− | var currentLocation = root.pageYOffset;
| + | |
− | if ( position == endLocation || currentLocation == endLocation || ( (root.innerHeight + currentLocation) >= documentHeight ) ) {
| + | |
− | clearInterval(animationInterval);
| + | |
− | anchorElem.focus();
| + | |
− | settings.callback( toggle, anchor ); // Run callbacks after animation complete
| + | |
− | }
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Loop scrolling animation
| + | |
− | * @private
| + | |
− | */
| + | |
− | var loopAnimateScroll = function () {
| + | |
− | timeLapsed += 16;
| + | |
− | percentage = ( timeLapsed / parseInt(settings.speed, 10) );
| + | |
− | percentage = ( percentage > 1 ) ? 1 : percentage;
| + | |
− | position = startLocation + ( distance * easingPattern(settings.easing, percentage) );
| + | |
− | root.scrollTo( 0, Math.floor(position) );
| + | |
− | stopAnimateScroll(position, endLocation, animationInterval);
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Set interval timer
| + | |
− | * @private
| + | |
− | */
| + | |
− | var startAnimateScroll = function () {
| + | |
− | animationInterval = setInterval(loopAnimateScroll, 16);
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Reset position to fix weird iOS bug
| + | |
− | * @link https://github.com/cferdinandi/smooth-scroll/issues/45
| + | |
− | */
| + | |
− | if ( root.pageYOffset === 0 ) {
| + | |
− | root.scrollTo( 0, 0 );
| + | |
− | }
| + | |
− | | + | |
− | // Start scrolling animation
| + | |
− | startAnimateScroll();
| + | |
− | | + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * If smooth scroll element clicked, animate scroll
| + | |
− | * @private
| + | |
− | */
| + | |
− | var eventHandler = function (event) {
| + | |
− | var toggle = getClosest( event.target, settings.selector );
| + | |
− | if ( toggle && toggle.tagName.toLowerCase() === 'a' ) {
| + | |
− | event.preventDefault(); // Prevent default click event
| + | |
− | smoothScroll.animateScroll( toggle, toggle.hash, settings); // Animate scroll
| + | |
− | }
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * On window scroll and resize, only run events at a rate of 15fps for better performance
| + | |
− | * @private
| + | |
− | * @param {Function} eventTimeout Timeout function
| + | |
− | * @param {Object} settings
| + | |
− | */
| + | |
− | var eventThrottler = function (event) {
| + | |
− | if ( !eventTimeout ) {
| + | |
− | eventTimeout = setTimeout(function() {
| + | |
− | eventTimeout = null; // Reset timeout
| + | |
− | headerHeight = getHeaderHeight( fixedHeader ); // Get the height of a fixed header if one exists
| + | |
− | }, 66);
| + | |
− | }
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Destroy the current initialization.
| + | |
− | * @public
| + | |
− | */
| + | |
− | smoothScroll.destroy = function () {
| + | |
− | | + | |
− | // If plugin isn't already initialized, stop
| + | |
− | if ( !settings ) return;
| + | |
− | | + | |
− | // Remove event listeners
| + | |
− | root.document.removeEventListener( 'click', eventHandler, false );
| + | |
− | root.removeEventListener( 'resize', eventThrottler, false );
| + | |
− | | + | |
− | // Reset varaibles
| + | |
− | settings = null;
| + | |
− | eventTimeout = null;
| + | |
− | fixedHeader = null;
| + | |
− | headerHeight = null;
| + | |
− | };
| + | |
− | | + | |
− | /**
| + | |
− | * Initialize Smooth Scroll
| + | |
− | * @public
| + | |
− | * @param {Object} options User settings
| + | |
− | */
| + | |
− | smoothScroll.init = function ( options ) {
| + | |
− | | + | |
− | // feature test
| + | |
− | if ( !supports ) return;
| + | |
− | | + | |
− | // Destroy any existing initializations
| + | |
− | smoothScroll.destroy();
| + | |
− | | + | |
− | // Selectors and variables
| + | |
− | settings = extend( defaults, options || {} ); // Merge user options with defaults
| + | |
− | fixedHeader = root.document.querySelector( settings.selectorHeader ); // Get the fixed header
| + | |
− | headerHeight = getHeaderHeight( fixedHeader );
| + | |
− | | + | |
− | // When a toggle is clicked, run the click handler
| + | |
− | root.document.addEventListener('click', eventHandler, false );
| + | |
− | if ( fixedHeader ) { root.addEventListener( 'resize', eventThrottler, false ); }
| + | |
− | | + | |
− | };
| + | |
− | | + | |
− | | + | |
− | //
| + | |
− | // Public APIs
| + | |
− | //
| + | |
− | | + | |
− | return smoothScroll;
| + | |
− | | + | |
| }); | | }); |
− | </script>
| + | }); |
− | | + | </script> |
− |
| + | |
− | <script>
| + | |
− | smoothScroll.init({
| + | |
− | speed: 200,
| + | |
− | easing: 'easeInOutCubic',
| + | |
− | offset: 0,
| + | |
− | updateURL: true,
| + | |
− | callbackBefore: function ( toggle, anchor ) {},
| + | |
− | callbackAfter: function ( toggle, anchor ) {}
| + | |
− | });
| + | |
− | </script>
| + | |
| | | |
| <style type="text/css"> | | <style type="text/css"> |