如何给一个对象添加动态属性

Question

var options = {pageName: 'index', position: 1800}var obj = {}现在要把这个属性添加到obj中变成obj = {  index:{position: options.position}}前面的index根据上面的pageName动态变化如何处理？

Answer 1

var options = {pageName: 'index', position: 1800}

var obj = {} 

obj = {

  [options.pageName]:{position: options.position}

}