console 命令行工具 X clear

console

var foo = 'bar';
var baz = { [foo]: 'abc'};
console.log(baz)
var target = { a: 1 };

var source1 = { b: 2 };
var source2 = { c: 3 };

Object.assign(target, source1, source2);
console.log(source1)// {a:1, b:2, c:3}

var lastWord = 'last word';

var a = {
  'first word': 'hello',
  [lastWord]: 'world'
};

a['first word'] // "hello"
a[lastWord] // "world"
a['last word'] // "world"