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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2022/06/27 02:43:58 UTC
[GitHub] [echarts] loadingwyn opened a new issue, #17284: [Feature] filter dispatched events in event listener
loadingwyn opened a new issue, #17284:
URL: https://github.com/apache/echarts/issues/17284
### What problem does this feature solve?
When I dispatch an 'datazoom' event manually, my 'datazoom' listener can know it is from code instead of user operations
### What does the proposed API look like?
myChart.dispatchAction({
type: 'dataZoom',
**emitEvent: false,**
start: 20,
end: 30
});
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[GitHub] [echarts] loadingwyn closed issue #17284: [Feature] filter dispatched events in event listener
Posted by GitBox <gi...@apache.org>.
loadingwyn closed issue #17284: [Feature] filter dispatched events in event listener
URL: https://github.com/apache/echarts/issues/17284
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[GitHub] [echarts] loadingwyn commented on issue #17284: [Feature] filter dispatched events in event listener
Posted by GitBox <gi...@apache.org>.
loadingwyn commented on issue #17284:
URL: https://github.com/apache/echarts/issues/17284#issuecomment-1168818608
@plainheart thanks, but it would be better if you can show this use case in documents
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[GitHub] [echarts] plainheart commented on issue #17284: [Feature] filter dispatched events in event listener
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #17284:
URL: https://github.com/apache/echarts/issues/17284#issuecomment-1166785002
Currently, you can put an extra parameter as a flag into the action payload and check it in the event handler. For example,
```js
chart.on('datazoom', e => {
if (e.emitEvent) {
// do something
}
})
```
```js
chart.dispatchAction('datazoom', {
type: 'dataZoom',
emitEvent: false,
start: 20,
end: 30
})
```
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