bar-上下渐变色柱形图，提示信息自定义显示

var x_data1 = ['0', '1', '2', '3', '4', '5', '6']; // 横坐标 var jstr = [5, 6, 40, 100, 58, 99]; //进场数据 var cstr = [36, 11, 22, 69, 115, 196]; //出场数据 var option = { backgroundColor: '#8B4513', to

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