|  | 
 | <!-- | 
 | Licensed to the Apache Software Foundation (ASF) under one | 
 | or more contributor license agreements.  See the NOTICE file | 
 | distributed with this work for additional information | 
 | regarding copyright ownership.  The ASF licenses this file | 
 | to you under the Apache License, Version 2.0 (the | 
 | "License"); you may not use this file except in compliance | 
 | with the License.  You may obtain a copy of the License at | 
 |  | 
 |    http://www.apache.org/licenses/LICENSE-2.0 | 
 |  | 
 | Unless required by applicable law or agreed to in writing, | 
 | software distributed under the License is distributed on an | 
 | "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | 
 | KIND, either express or implied.  See the License for the | 
 | specific language governing permissions and limitations | 
 | under the License. | 
 | --> | 
 |  | 
 | <html> | 
 |     <head> | 
 |         <meta charset="utf-8"> | 
 |         <script src="lib/simpleRequire.js"></script> | 
 |         <script src="lib/config.js"></script> | 
 |         <meta name="viewport" content="width=device-width, initial-scale=1" /> | 
 |     </head> | 
 |     <body> | 
 |         <style> | 
 |             html, body, #main { | 
 |                 width: 100%; | 
 |                 height: 100%; | 
 |                 margin: 0; | 
 |             } | 
 |             #main { | 
 |                 background: #fff; | 
 |             } | 
 |         </style> | 
 |  | 
 |         <p>select</p> | 
 |         <button onclick="select('A')">A</button> | 
 |         <button onclick="select(1)">B</button> | 
 |         <p>unselect</p> | 
 |         <button onclick="unselect(0)">A</button> | 
 |         <button onclick="unselect('B')">B</button> | 
 |  | 
 |         <div id="main"></div> | 
 |         <script> | 
 |  | 
 |             require([ | 
 |                 'echarts' | 
 |             ], function (echarts) { | 
 |  | 
 |  | 
 |                 chart = echarts.init( | 
 |                     document.getElementById('main'), | 
 |                     null, | 
 |                     { | 
 |  | 
 |                     } | 
 |                 ); | 
 |  | 
 |                 chart.setOption({ | 
 |                     series: [{ | 
 |                         type: 'pie', | 
 |                         selectedMode:'single', | 
 |                         data: [{ | 
 |                             value: 100, | 
 |                             name: 'A' | 
 |                         }, { | 
 |                             value: 200, | 
 |                             name: 'B' | 
 |                         }, { | 
 |                             value: 300, | 
 |                             name: 'C' | 
 |                         }, { | 
 |                             value: 400, | 
 |                             name: 'D' | 
 |                         }] | 
 |                     }] | 
 |                 }); | 
 |             }); | 
 |  | 
 |             function select(name) { | 
 |                 if (typeof name === 'string') { | 
 |                     chart.dispatchAction({ | 
 |                         type: 'pieSelect', | 
 |                         name: name | 
 |                     }); | 
 |                 } | 
 |                 else { | 
 |                     chart.dispatchAction({ | 
 |                         type: 'pieSelect', | 
 |                         dataIndex: name | 
 |                     }); | 
 |                 } | 
 |             } | 
 |  | 
 |             function unselect(name) { | 
 |                 if (typeof name === 'string') { | 
 |                     chart.dispatchAction({ | 
 |                         type: 'pieUnSelect', | 
 |                         name: name | 
 |                     }); | 
 |                 } | 
 |                 else { | 
 |                     chart.dispatchAction({ | 
 |                         type: 'pieUnSelect', | 
 |                         dataIndex: name | 
 |                     }); | 
 |                 } | 
 |             } | 
 |         </script> | 
 |     </body> | 
 | </html> |