如何过滤到 Object (js) 只查看所需的属性

Question

I'm Using SheetJS ( https://github.com/SheetJS/sheetjs ) to use information from an excel table. What I got till now is an object with the cell names as objects, so like this:

Sheet1 = {
  A1: {
    t: "s",
    v: "Jhon"
  },
  A2: {
    t: "s",
    v: "Doe"
  }
}

and so on. And now I need to find the number I want (depending on the day) only looking between cells B14 to AF14) and return the seven cells bellow the cell I got on the previous step. The hardest part for me is to look only at the objects B14, C14.. AF14.

Answer 1

I'm pretty sure that sheetjs gives an ability to retrieve certain cells instead of whole grid, but I never used it.

What I would do:

const sheet = {
  A1: {
    t: "s",
    v: "Jhon"
  },
  A2: {
    t: "s",
    v: "Doe"
  }
}

const start = 'B'.charCodeAt(0)
const end = 'F'.charCodeAt(0)

const objs = {}

for (let i = start; i <= end; i += 1) {
  const key = String.fromCharCode(i) + '14'
  if (key in sheet) {
    objs[key] = sheet[key]
  }
}

This code should return an object of objects representing cells between B14 and F14.

You can do this too:

const sheet = {
  A1: {
    t: "s",
    v: "Jhon"
  },
  A2: {
    t: "s",
    v: "Doe"
  }
}

const array = Object.entries(sheet).filter(([key]) => key.match(/^[B-F]14$/))

This will give you array of filtered objects.

If you want the 7 cells under that just make a second loop.