jQuery UI 实例 - 特效（Effect） · W3School jQuery UI 教程

# jQuery UI 实例 - 特效（Effect）对一个元素应用动画特效。如需了解更多有关 `.effect()` 方法的细节，请查看 API 文档 [.effect()](api-effect.html)。 ## .effect() 演示点击按钮预览特效。 ``` <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>jQuery UI 特效 - .effect() 演示</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css"> <script src="//code.jquery.com/jquery-1.9.1.js"></script> <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script> <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css"> <style> .toggler { width: 500px; height: 200px; position: relative; } #button { padding: .5em 1em; text-decoration: none; } #effect { width: 240px; height: 135px; padding: 0.4em; position: relative; } #effect h3 { margin: 0; padding: 0.4em; text-align: center; } .ui-effects-transfer { border: 2px dotted gray; } </style> <script> $(function() { // 运行当前选中的特效 function runEffect() { // 从中获取特效类型 var selectedEffect = $( "#effectTypes" ).val(); // 大多数的特效类型默认不需要传递选项 var options = {}; // 一些特效带有必需的参数 if ( selectedEffect === "scale" ) { options = { percent: 0 }; } else if ( selectedEffect === "transfer" ) { options = { to: "#button", className: "ui-effects-transfer" }; } else if ( selectedEffect === "size" ) { options = { to: { width: 200, height: 60 } }; } // 运行特效 $( "#effect" ).effect( selectedEffect, options, 500, callback ); }; // 回调函数 function callback() { setTimeout(function() { $( "#effect" ).removeAttr( "style" ).hide().fadeIn(); }, 1000 ); }; // 根据选择菜单值设置特效 $( "#button" ).click(function() { runEffect(); return false; }); }); </script> </head> <body> <div class="toggler"> <div id="effect" class="ui-widget-content ui-corner-all"> <h3 class="ui-widget-header ui-corner-all">特效（Effect）</h3> <p> Etiam libero neque, luctus a, eleifend nec, semper at, lorem. Sed pede. Nulla lorem metus, adipiscing ut, luctus sed, hendrerit vitae, mi. </p> </div> </div> <select name="effects" id="effectTypes"> <option value="blind">百叶窗特效（Blind Effect）</option> <option value="bounce">反弹特效（Bounce Effect）</option> <option value="clip">剪辑特效（Clip Effect）</option> <option value="drop">降落特效（Drop Effect）</option> <option value="explode">爆炸特效（Explode Effect）</option> <option value="fade">淡入淡出特效（Fade Effect）</option> <option value="fold">折叠特效（Fold Effect）</option> <option value="highlight">突出特效（Highlight Effect）</option> <option value="puff">膨胀特效（Puff Effect）</option> <option value="pulsate">跳动特效（Pulsate Effect）</option> <option value="scale">缩放特效（Scale Effect）</option> <option value="shake">震动特效（Shake Effect）</option> <option value="size">尺寸特效（Size Effect）</option> <option value="slide">滑动特效（Slide Effect）</option> <option value="transfer">转移特效（Transfer Effect）</option> </select> <a href="#" id="button" class="ui-state-default ui-corner-all">运行特效</a> </body> </html> ``` ## Easing 演示本实例使用 HTML Canvas 元素，绘制了 jQuery UI 提供的所有 easings。点击每个图可查看该 easing 的行为。。 ``` <!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>jQuery UI 特效 - Easing 演示</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css"> <script src="//code.jquery.com/jquery-1.9.1.js"></script> <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script> <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css"> <style> .graph { float: left; margin-left: 10px; } </style> <script> $(function() { if ( !$( "<canvas>" )[0].getContext ) { $( "<div>" ).text( "您的浏览器不支持 canvas，本演示需要在支持 canvas 的浏览器下进行。" ).appendTo( "#graphs" ); return; } var i = 0, width = 100, height = 100; $.each( $.easing, function( name, impl ) { var graph = $( "<div>" ).addClass( "graph" ).appendTo( "#graphs" ), text = $( "<div>" ).text( ++i + ". " + name ).appendTo( graph ), wrap = $( "<div>" ).appendTo( graph ).css( 'overflow', 'hidden' ), canvas = $( "<canvas>" ).appendTo( wrap )[ 0 ]; canvas.width = width; canvas.height = height; var drawHeight = height * 0.8, cradius = 10; ctx = canvas.getContext( "2d" ); ctx.fillStyle = "black"; // 绘制背景 ctx.beginPath(); ctx.moveTo( cradius, 0 ); ctx.quadraticCurveTo( 0, 0, 0, cradius ); ctx.lineTo( 0, height - cradius ); ctx.quadraticCurveTo( 0, height, cradius, height ); ctx.lineTo( width - cradius, height ); ctx.quadraticCurveTo( width, height, width, height - cradius ); ctx.lineTo( width, 0 ); ctx.lineTo( cradius, 0 ); ctx.fill(); // 绘制底线 ctx.strokeStyle = "#555"; ctx.beginPath(); ctx.moveTo( width * 0.1, drawHeight + .5 ); ctx.lineTo( width * 0.9, drawHeight + .5 ); ctx.stroke(); // 绘制顶线 ctx.strokeStyle = "#555"; ctx.beginPath(); ctx.moveTo( width * 0.1, drawHeight * .3 - .5 ); ctx.lineTo( width * 0.9, drawHeight * .3 - .5 ); ctx.stroke(); // 绘制 easing ctx.strokeStyle = "white"; ctx.beginPath(); ctx.lineWidth = 2; ctx.moveTo( width * 0.1, drawHeight ); $.each( new Array( width ), function( position ) { var state = position / width, val = impl( state, position, 0, 1, width ); ctx.lineTo( position * 0.8 + width * 0.1, drawHeight - drawHeight * val * 0.7 ); }); ctx.stroke(); // 点击时动态改变 graph.click(function() { wrap .animate( { height: "hide" }, 2000, name ) .delay( 800 ) .animate( { height: "show" }, 2000, name ); }); graph.width( width ).height( height + text.height() + 10 ); }); }); </script> </head> <body> <div id="graphs"></div> </body> </html> ```