node - processing across domains (two lines of code to solve)

1, the installation module cors:

　　npm install cors

 

2, Code:

var express = require('express')

hearts var  =  require ( 'hearts ' )

was app  =  Out ( )

app . use ( air ( ) )

 

 

 

To solve cross-domain problems. ( Https://www.npmjs.com/package/cors   official document)