ChartJS: Show default tooltip onclick

时间:2016-04-04 17:10:16

标签: chart.js

I have a chart.js line chart displaying properly. When you hover over the y-axis gridlines, the tooltips display as they should.

I'm trying to convert this to function on a touchscreen, so there is no hover. Is there a way to add a simple parameter to make the tooltip show on both hover and onclick?

Note, I know I could add a custom tooltip and add all of that functionality - I'm trying to see if there's just a parameter I can add as I don't need a custom tooltip.

3 个答案:

答案 0 :(得分:4)

对于Chart.js v2,您可以specify those events at the root level of chart options

options: {
    events: ['click']
}

答案 1 :(得分:3)

在指定图表的选项时,只需将"click"添加到tooltipEvents列表

    ...
    tooltipEvents: ["mousemove", "touchstart", "touchmove", "click"],
});

在下面的小提琴中,除了click之外,我已从列表中删除了所有其他事件,以便了解它在移动设备上的效果

小提琴 - http://jsfiddle.net/8uobybv3/

答案 2 :(得分:0)

对于 ChartJS版本2.8.0 ,您将需要同时添加clickmouseout事件,以使工具提示以所需的方式运行。

当鼠标指针移到图表画布区域之外时,click事件将使工具提示在单击点时显示,而mouseout事件将隐藏工具提示,这是所需的行为。

注意:如果不添加mouseout事件,即使在图表画布区域之外移动或单击鼠标,工具提示也不会隐藏。

代码:

options: {
  events: ["click", "mouseout"],
....
...
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