Incubator-echarts: Datazoom: Cannot set property xxx of undefined

[sunpcm]

https://echarts.apache.org/examples/en/editor.html?c=line-aqi

if I drag datazoom，in console, will show the error as blow. I think it should be improved.
I track all errors in my website, the error is the most.

In Chrome

In Firfox, the same error will show different info.

please have a check, thanks

[Ovilia]

Cannot reproduce. Can you be more specific on how you drag the datazoom?

[sunpcm]

@Ovilia Sorry, my bad, a little fast. Can you see the gif in the blow?

As the amount of data in chart increases, the chance of errors is higher

[wf123537200]

I think it is just an error in console, the function does not affect.
And i find it‘s a error in zrender, and make a pr zrender #606

[sunpcm]

I think it is just an error in console, the function does not affect.
And i find it‘s a error in zrender, and make a pr zrender #606

OK, I see, thanks.