Javascript 将对象列表转换为具有键值的 object

Question

var mappings = [ { character: '1', symbol: '$' }, { character: 's', symbol: '@' } ]

I want to turn this into:

{
  1: "$",
  s: "@"
}

Is there any easy way to accomplish this in JavaScript?

Answer 1

Extract the values of each object in the array using Array.prototype.map , then construct an object from those entries using Object.fromEntries .

 var mappings = [ { character: '1', symbol: '$' }, { character: 's', symbol: '@' } ] let result = Object.fromEntries(mappings.map(e => Object.values(e))) console.log(result)

Answer 2

 var mappings = [ { character: '1', symbol: '$' }, { character: 's', symbol: '@' } ] const newMappings = mappings.map(item => ({[item.character]: item.symbol})) const reduceMapping = newMappings.reduce((acc, current) => ({...acc, ...current}),{}) console.log(reduceMapping)