ES6 arrow pointing function and this

Function arrow (=>) : Function abbreviated

• No parameters:() => {}
• A single parameter:x => {}
• A number of parameters:(x, y) => {}
• Deconstruction parameters:({x, y}) => {}
• Nesting: deployment pipeline mechanism
• this point immobilization
  • Not because of internal binding thismechanism, but it did not own this, resulting in internal thisis the outer layer of code blocksthis
  • Because there is no this, and therefore can not be used as a constructor

Arrow function Mistakes

• Function in the body thisis 定义时所在的对象not the使用时所在的对象
• Allows thispoint immobilization, this feature is very beneficial to the callback function package
• Not as 构造函数therefore can not use the arrow functionsnew命令
• It can not be used yield命令, and therefore can not function as the arrowGenerator函数
• Not available Arguments对象, this object does not exist (in a function in vivo rest/spread参数in place)
• You must put parentheses around the outside of the object when the object is returned