小编Lea*_*des的帖子

下面的片段揭示了疑问

var foo = 'something'
var baz = 'other thing'

var obj = {
  prop1 : 'my prop',
  prop2 : foo,        //referencing external variable
  prop3 : baz         //referencing external variable
}

// here we get the expected obj to be printed
console.log(obj)

// now I change one of the initial variable
foo = 'changed'

// here we get the sabe print as the first, that is the ~problem~   
console.log(obj)

那么,如何在没有重新分配的情况下在prop2上打印"已更改" obj.prop2 = foo