The code editor you see is Monaco is configure to eval JS code per column

From functions to Math library, you have full browser javascript support

Don't forget to add a `return` in your code, else nothing you will be generate

The generator will eval your code each n time the number of row you choose. The code don't know other column's code neither previous eval, so you cannot write a incremental counter

You can choose a preset JS function to generate random values but if you leave it blank, it will produce undefined which remove the property/column. It can be used for AutoIncrement/Serial columns or default value

It's exactly the same if you add 'Empty Rows', if you don't set a value, the cell is undefined

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