将对象转换为二维数组

Question

How I can transform an object to a 2d array?

for example :

{ field : 'name',
  value : 'peter',
  field1 : 'email',
  value1 : 'test@gmail.com',
  field2 : 'id',
  value2 : '2345',
  ............
  .....
  ...
 }

to

  [['name', 'peter],['email','test@gmail.com'],['id','2345'] .......]

thanks!

Answer 1

You could check the field and get the value for a new array.

 var object = { field: 'name', value: 'peter', field1: 'email', value1: 'test@gmail.com', field2: 'id', value2: '2345'}, array = Object.keys(object).reduce((r, k) => r.concat(k.slice(0, 5) === 'field'? [[object[k], object['value' + k.slice(5)]]] : []) , []); console.log(array); 

 .as-console-wrapper { max-height: 100% !important; top: 0; } 

Answer 2

 let obj = { field: 'name', value: 'peter', field1: 'email', value1: 'test@gmail.com', field2: 'id', value2: '2345' }; let result = Object.keys(obj) .filter(key => key.indexOf("field") === 0) // we're only interested in the "fieldX" keys .map(field => [obj[field], obj[field.replace("field", "value")]]); // build the array from the "fieldX"-keys console.log(result); 

Answer 3

  let obj = { field : 'name', value : 'peter', field1 : 'email', value1 : 'test@gmail.com', field2 : 'id', value2 : '2345' }; let results = []; Object.values(obj).forEach((e, i, arr) => { if (!(i % 2)) { results.push([e, arr[i+1]]); } }); console.log(results); 

Answer 4

Try this function, it will do it for you:

var objectToPairs = function(object) {
  var array = [];

  for (var key in object) {
    if (object.hasOwnProperty(key)) {
      if (key.indexOf('field') === 0) {
        var index = key.replace(/^\D+/g, '');
        var valueKey = 'value' + index;

        if (object.hasOwnProperty(key)) {
          array.push([object[key], object[valueKey]]);
        }
      }
    }
  }

  return array;
}

JSFIddle:

https://jsfiddle.net/mucwvqpz/1/