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making test data in js

JavaScript

Last updated at 2021-03-23Posted at 2021-02-25

If you want blank arbitrary number of Array data.

[...Array(n)] gives us undefined value of array with (n),

while [...Array(n).keys()], 1...(n) of array.

  const [data, setData] = React.useState(
    [...Array(167)].map((_, index) => ({
      x: index,
      y: Math.floor(Math.random() * 100) + 40,
      date: new Date(),
    })),
  )

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