echarts折线图（柱状图设置图例换行）

效果: 方法: legend: { orient: “vertical”, left: “right”, top: “top”, itemWidth: 30, itemHeight: 16.8, data: [“满分完成”, “审验完成”,"", “满分未完成”, “审验未完成”], itemGap: 20, textStyle: { fontSize: 18, color: “#d1c6da”,

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