Convert 2 element list into dict in Javascript

Question

I am having 2 element list which is like this,

a = ['first_name', 'user']
b = ['last_name', 'abcd']

I want to convert it into,

{
  'first_name' : 'user',
  'last_name' : 'abcd'
}

This is what I tried:

 a = ['first_name', 'user'] b = ['last_name', 'abcd'] new_dict = {} new_dict[a[0]] = a[1] new_dict[b[0]] = b[1] console.log(new_dict) 

Are there any simple/native JS method than this?

Answer 1

您可以将a和b数组放置在外部数组中，然后将该数组简化为单个对象。

var o = [a,b].reduce(function(p, c) { p[c[0]] = c[1]; return p; }, {});

Answer 2

You can use Object.assign with map() and spread syntax.

 var a = ['first_name', 'user'], b = ['last_name', 'abcd'] var obj = Object.assign({}, ...[a, b].map(([k, v]) => ({[k]: v}))) console.log(obj) 

Answer 3

You could use Array#reduce with Object.assign and computed property names with a previous destructuring assignment .

 var a = ['first_name', 'user'], b = ['last_name', 'abcd'], object = [a, b].reduce((r, [k, v]) => Object.assign(r, { [k]: v }), {}); console.log(object);