[ES6] ES6 Parameter Object Destructuring with Required Values

Not only can you provide default values when using ES6 parameter object destructuring, but you can also require the presence of certain properties.

function ajax({
  type = "get",
  url = requiredParameter("url"),
  data = {},
  success = requiredParameter("success"),
  error = () => {},
  isAsync = true } = {}) {
    console.log(JSON.stringify({ type, url, data, success, error, isAsync }, null, 2));
}

function requiredParameter(name){
  console.log(`parameter missing: "${name}"`);
}

try{
 ajax({url: ‘http://api.com‘, data: {name: ‘Zhentian‘}, success: false})
}catch(e){
  console.log(JSON.stringify(e))
}

Now, success and url are rueqired, if we don‘t passin success, then it will show:

//"parameter missing: \"success\""