name : effect-bounce.js /*! * jQuery UI Effects Bounce 1.13.3 * https://jqueryui.com * * Copyright OpenJS Foundation and other contributors * Released under the MIT license. * https://jquery.org/license */ //>>label: Bounce Effect //>>group: Effects //>>description: Bounces an element horizontally or vertically n times. //>>docs: https://api.jqueryui.com/bounce-effect/ //>>demos: https://jqueryui.com/effect/ ( function( factory ) { "use strict"; if ( typeof define === "function" && define.amd ) { // AMD. Register as an anonymous module. define( [ "jquery", "../version", "../effect" ], factory ); } else { // Browser globals factory( jQuery ); } } )( function( $ ) { "use strict"; return $.effects.define( "bounce", function( options, done ) { var upAnim, downAnim, refValue, element = $( this ), // Defaults: mode = options.mode, hide = mode === "hide", show = mode === "show", direction = options.direction || "up", distance = options.distance, times = options.times || 5, // Number of internal animations anims = times * 2 + ( show || hide ? 1 : 0 ), speed = options.duration / anims, easing = options.easing, // Utility: ref = ( direction === "up" || direction === "down" ) ? "top" : "left", motion = ( direction === "up" || direction === "left" ), i = 0, queuelen = element.queue().length; $.effects.createPlaceholder( element ); refValue = element.css( ref ); // Default distance for the BIGGEST bounce is the outer Distance / 3 if ( !distance ) { distance = element[ ref === "top" ? "outerHeight" : "outerWidth" ]() / 3; } if ( show ) { downAnim = { opacity: 1 }; downAnim[ ref ] = refValue; // If we are showing, force opacity 0 and set the initial position // then do the "first" animation element .css( "opacity", 0 ) .css( ref, motion ? -distance * 2 : distance * 2 ) .animate( downAnim, speed, easing ); } // Start at the smallest distance if we are hiding if ( hide ) { distance = distance / Math.pow( 2, times - 1 ); } downAnim = {}; downAnim[ ref ] = refValue; // Bounces up/down/left/right then back to 0 -- times * 2 animations happen here for ( ; i < times; i++ ) { upAnim = {}; upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance; element .animate( upAnim, speed, easing ) .animate( downAnim, speed, easing ); distance = hide ? distance * 2 : distance / 2; } // Last Bounce when Hiding if ( hide ) { upAnim = { opacity: 0 }; upAnim[ ref ] = ( motion ? "-=" : "+=" ) + distance; element.animate( upAnim, speed, easing ); } element.queue( done ); $.effects.unshift( element, queuelen, anims + 1 ); } ); } );