regions=db.query(`SELECT DISTINCT destination FROM takkyubin`)
region_list=regions.map((d)=>d.destination)
rates=db.query(
`SELECT size, destination, "${region_from}" FROM takkyubin where size like $1 AND destination like $2`,
[`%${d}%`,`%${region_to}%`]
)
max_shipping_rate=parseInt(rates[0][region_from])
model_item_fee=per_order+per_item*q
model_weight_fee=per_order+M_t*per_kg
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.