Echarts图表的悬浮框位置的调整

下面的代码实现了悬浮框的位置不会超出界面 最多在离界面边缘5px的地方

tooltip: {
                            position: function(point, params, dom, rect, size) {
                                // 提示框位置
                                var x = 0; // x坐标位置
                                var y = 0; // y坐标位置

                                // 当前鼠标位置
                                var pointX = point[0];
                                var pointY = point[1];

                                // 提示框大小
                                var boxWidth = size.contentSize[0];
                                var boxHeight = size.contentSize[1];

                                // boxWidth > pointX 说明鼠标左边放不下提示框
                                if (boxWidth > pointX) {
                                    x = 5;
                                } else {
                                    // 左边放的下
                                    x = pointX - boxWidth;
                                }

                                // boxHeight > pointY 说明鼠标上边放不下提示框
                                if (boxHeight > pointY) {
                                    y = 5;
                                } else {
                                    // 上边放得下
                                    y = pointY - boxHeight;
                                }

                                return [x, y];
                            }
                        }

Echarts官网关于自定义悬浮框位置的链接：https://echarts.apache.org/zh/option.html#tooltip.position

转载:https://blog.csdn.net/qq_41401025/article/details/108998906