express js cors
var express = require('express')
var cors = require('cors') //use this
var app = express()
app.use(cors()) //and this
app.get('/user/:id', function (req, res, next) {
res.json({user: 'CORS enabled'})
})
app.listen(5000, function () {
console.log('CORS-enabled web server listening on port 5000')
})cors npm
/*
Installation
$ npm install cors
*/
// Simple Usage (Enable All CORS Requests)
var express = require("express");
var cors = require("cors");
var app = express();
app.use(cors());
app.get("/products/:id", function (req, res, next) {
res.json({ msg: "This is CORS-enabled for all origins!" });
});
app.listen(3000, function () {
console.log("CORS-enabled web server listening on port 3000");
});cors express
var allowedOrigins = ['http://localhost:3000',
'http://yourapp.com'];
app.use(cors({
origin: function(origin, callback){
// allow requests with no origin
// (like mobile apps or curl requests)
if(!origin)
return callback(null, true);
if(allowedOrigins.indexOf(origin) === -1){
var msg = 'The CORS policy for this site does not ' +
'allow access from the specified Origin.';
return callback(new Error(msg), false);
}
return callback(null, true);
}
}));Copyright © 2021 Codeinu
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