如何在Javascript中将对象转换为数组

Question

I need to transform these objects in Javascript:

const tables = [
      {
      table_name: "Table",
      columns: [
        {
          column_name: 'column_1',
          values: [{value: 'data1_c1', other:25}, {value: 'data2_c1', other:25}]
        },
        {
          column_name: 'column_2',
          values: [{value: 'data1_c2', other:30}, {value: 'data2_c2', other:30}]
        },
        {
          column_name: 'column_3',
          values: [{value: 'data1_c3', other:40}, {value: 'data2_c3', other:40}]
        }
      ]
     }
  ]

to this array

result = [['data1_c1, 'data2_c1'], ['data1_c2, 'data2_c2'], ['data1_c3, 'data2_c3']]

Please, I need help with this exercise.

---

I was trying with this

let result = []

tables.map(table =>(
  table.columns.map(column => (
    column.values.map(value => (
      result.push(value.value)
    ))
  ))
))

Answer 1

This could be a simple answer

    var result = []
    table[0].columns.forEach(colum => { 
      var cols = []
      colum.values.forEach(valueObj => cols.push(valueObj.value))
      result.push(cols)
    })

Answer 2

If you have only one item in the tables array, you can use

const result = tables[0].columns.map((column) => {
  return column.values.map((item) => item.value)
})

If you have multiple items, it is a bit more complex:

const result = tables.reduce((acc, table) => {
  return acc.concat(
    table.columns.map(column => {
      return column.values.map(item => item.value);
    })
  );
}, []);

 const tables = [ { table_name: "Table", columns: [ { column_name: "column_1", values: [ { value: "data1_c1", other: 25 }, { value: "data2_c1", other: 25 } ] }, { column_name: "column_2", values: [ { value: "data1_c2", other: 30 }, { value: "data2_c2", other:30 } ] }, { column_name: "column_3", values: [ { value: "data1_c3", other: 40 }, { value: "data2_c3", other: 40 } ] } ] } ]; const result1 = tables[0].columns.map((column) => { return column.values.map((item) => item.value) }) console.log(result1); const result2 = tables.reduce((acc, table) => { return acc.concat( table.columns.map(column => { return column.values.map(item => item.value); }) ); }, []); console.log(result2);