Auto fill a column with data from the same row

Without getting into the nitty gritty of matching field type to field type, the most basic javascript to copy one field value from the record on which a button was clicked into another field in all records:

let config = input.config({
    title: 'Copy one value from one record into all records',
    description: 'Test script developed by Kamille Parks, provided without warranty, to answer the following question from the Community Forums: https://community.airtable.com/t/auto-fill-a-column-with-data-from-the-same-row/43196',
    items: [
        input.config.table('table', {
            label: 'Table'
        }),
        input.config.field('originField', {
            label: 'Origin Field',
            description: 'Field from which a value will be copied',
            parentTable: 'table'
        }),
        input.config.field('destinationField', {
            label: 'Destination Field',
            description: 'Field into which the value will be pasted',
            parentTable: 'table'
        }),
    ]
})

let {table, originField, destinationField} = config

let query = await table.selectRecordsAsync({fields: [destinationField, originField]})
let records = query.records

let record = await input.recordAsync('Selected Record', table)

if (record) {
    let originValue = record.getCellValueAsString(originField)
    let updates = records.map(x => {
        return {
            id: x.id,
            fields: {
                [destinationField.id]: originValue
            }
        }
    })
    while (updates.length > 0) {
        await table.updateRecordsAsync(updates.slice(0, 50))
        updates = updates.slice(50)
    }
    output.markdown("*Done!*")
} else {
    output.text("No record selected")
}