myChart.showLoading(); myChart.hideLoading(); myChart.setOption(option = { tooltip: { trigger: 'item', triggerOn: 'mousemove' }, series: [ { type: 'tree', data: [{ "children": [ { "name": "实践", "hasChild":false, "collapsed":true }, { "name": "理论", "hasChild":false, "collapsed":true } ], "name": "学习方法" }], top: '1%', left: '7%', bottom: '1%', right: '20%', symbolSize: 14, label: { normal: { position: 'left', verticalAlign: 'middle', align: 'right', fontSize:16 } }, leaves: { label: { normal: { position: 'right', verticalAlign: 'middle', align: 'left' } } }, expandAndCollapse: true, animationDuration: 550, animationDurationUpdate: 750 } ] });