datazoom does not return start and end values

[Kafty]

Version

4.1.0-release

Reproduction link

https://ecomfe.github.io/echarts-examples/public/editor.html?c=doc-example/getting-started

Steps to reproduce

Please copy this into input on the left side.

// please copy this :)

option = {
    title: {
        text: 'ECharts 入门示例'
    },
    tooltip: {},
    legend: {
        data:['销量']
    },
    xAxis: {
        data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
    },
    yAxis: {},
    series: [{
        name: '销量',
        type: 'bar',
        data: [5, 20, 36, 10, 10, 20]
    }],
    toolbox: {
        feature: {
            restore: {
                title: 'Restore',
            },
            dataZoom: {
                title: {
                    zoom: 'Zoom',
                    back: 'Back',
                    clear: 'Back',
                },
                restore: {
                    title: 'Restore',
                },
            },
        },
    },
    dataZoom: [
        {
            type: 'inside',
            show: true,
            zoomOnMouseWheel: false,
            moveOnMouseMove: false,
        },    
    ]
};

myChart.on('dataZoom', function (params) {
    console.log(params);
    
    // should return percentage values, but returns undefined
    console.log(params.batch[0].start);
    console.log(params.batch[0].end);
});

myChart.on('dataZoom', function (params) {
    console.log(params);
    
    // should return percentage values, but returns undefined
    console.log(params.batch[0].start);
    console.log(params.batch[0].end);
});

then try to zoom graph, and then have a look into console

What is expected?

I thought, the dataZoom event (triggered after zooming the graph using the toolbox buttons) would return start and end values in percent

What is actually happening?

start and end (percents) returns undefined. Values are not included in the payload of an event.

---

Thank you :)

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[Kafty]

batch[0] does not include start and end values

[100pah]

start and end can get from

chart.getOption().dataZoom

But it is needed to be enhanced.

[Kafty]

I'll try that :) thanks. Is there any chance how to get it into the event? Because when the slider is moved, the event that is fired with it, have these atributes. Would be cool to have them in all zoom events

[github-actions]

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