[Feature] I hope to get all series information when tooltip.trigger = item

[li-jia-nan]

What problem does this feature solve?

tooltip.formatter 方法接受一个 params 参数，当 tooltip.trigger = item 的，params 是当前 hover 的 series data，当 tooltip.trigger = axis 时，params 是一个数组，包含所有的 series data

我需要在 tooltip.trigger = item 的时候，在 tooltip 中也展示所有的 series 信息，所以我希望 tooltip.trigger = item 的，也可以获取到所有的 series data

---

The tooltip.formatter method accepts a params. When tooltip.trigger = item, params is the series data of the current hover. When tooltip.trigger = axis, params is an array containing all series data.

I need to display all series info in the tooltip when tooltip.trigger = item, so I hope to get all series data when tooltip.trigger = item.

What does the proposed API look like?

当 trigger = 'item' 时可以新增一个 context 参数：

tooltip: {
  trigger: 'item',
  formatter: (params, context) => {
    console.log(context);
  }
}

[echarts-bot]

@li-jia-nan It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people and get helped, we'd like to suggest using English next time. 🤗

TRANSLATED

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What problem does this feature solve?

The tooltip.formatter method accepts a params parameter. When tooltip.trigger = item, params is the series data of the current hover. When tooltip.trigger = axis, params is an array. Contains all series data

I need to display all the series information in the tooltip when tooltip.trigger = item, so I hope that when tooltip.trigger = item, I can also get all the series data

---

The tooltip.formatter method accepts a params. When tooltip.trigger = item, params is the series data of the current hover. When tooltip.trigger = axis, params is an array containing all series data.

I need to display all series info in the tooltip when tooltip.trigger = item, so I hope to get all series data when tooltip.trigger = item.

What does the proposed API look like?

When trigger = 'item' you can add a context parameter:

tooltip: {
  trigger: 'item',
  formatter: (params, context) => {
    console.log(context);
  }
}

[helgasoft]

use getOption - Demo.

[plainheart]

The getOption API is expensive and it's not first recommended. Except for this, I think there is no public API to get such information, but I still post a workaround that uses inner APIs.