legend: {type: 'scroll',orient: 'vertical',x: 'left',y: 'bottom',top: "42%",left: '13%',data: this.dutyNames,textStyle: { color: '#fff' },triggerEvent: true,tooltip: {show: true,trigger: 'item',//鼠标移动上去展示全称},formatter: function (params) {var val = "";if (params.length > 6) {val = params.substr(0, 16) + '...';return val;} else {return params;}}},

显示效果：