Javascript Highcharts - 在一个点上手动触发悬停事件
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Highcharts - manually trigger hover event on a point
提问by Scott At Rain
When you hover over a point in a Highcharts chart, you get a nice enlarged circle under you cursor (or other symbol). What I would like to do manually trigger that hover effect.
当您将鼠标悬停在 Highcharts 图表中的某个点上时，您会在光标（或其他符号）下方看到一个漂亮的放大圆圈。我想做的是手动触发悬停效果。
I know that I can manually trigger the mouseOver event on the point, but that doesn't give me the enlarged symbol on the chart that I am going for.
我知道我可以在该点上手动触发 mouseOver 事件，但这并没有给我想要的图表上的放大符号。
回答by Scott At Rain
I found the answer by looking at the source - call "setState('hover');" on the point that you want to be highlighted.
我通过查看源找到了答案 - 调用“setState('hover');” 在您想要突出显示的点上。
回答by JMarques
Just to add an important information:
只是添加一个重要信息：
For StockChart this solution doesn't work:
对于 StockChart，此解决方案不起作用：
In this exampleyou have to replace this:
在这个例子中，你必须替换这个：
chart.tooltip.refresh(chart.series[0].data[i]);
to this:
对此：
chart.tooltip.refresh([chart.series[0].points[i]]);
One possible solution is available here.
回答by Do Async
Here is an example of how to select (hover) the last valid point in series programmatically:
以下是如何以编程方式选择（悬停）系列中最后一个有效点的示例：
// Find last not-null point in data
let last = data.indexOf(null) - 1;
last = (last === -2) ? data.length - 1 : last;
const lastPoint = this.series[0].points[last];
// Trigger the hover event
lastPoint.setState('hover');
lastPoint.state = ''; // You need this to fix hover bug
this.tooltip.refresh(lastPoint); // Show tooltip
回答by br4nnigan
To give a more direct answer (e.g. for then you don't have access to the highcharts instance):
给出更直接的答案（例如，因为那时您无权访问 highcharts 实例）：
you need to create a mouseover event and give it proper pageX and pageY attributes before you trigger it.
您需要创建一个鼠标悬停事件并在触发它之前为其提供适当的 pageX 和 pageY 属性。
