node设置跨域笔记源码
读心 -/*
* @Author: yongyuan at <yongyuan253015@gmail.com>
* @Date: 2021-08-05 22:48:27
* @LastEditTime: 2021-08-07 19:09:27
* @LastEditors: yongyuan at <yongyuan253015@gmail.com>
* @Description: 项目主体js文件
* @FilePath: \nodeJS\app.js
*
*/
const express = require("express");
const app = express();
const arr = [
{ id: 1, value: 8, done: false, delete: false },
{ id: 2, value: 43, done: false, delete: false },
{ id: 3, value: 3, done: false, delete: false }
]
app.all('*', (req, res, next) => {
// 允许跨域,*表示允许任意域名跨域
res.header('Access-Control-Allow-Origin', "*");
res.header('Access-Control-Allow-Headers', "content-type");
res.header('Access-Control-Allow-Methods', "DELETE,PUT,POST,GET,OPTTONS");
next()
})
app.get("/todoList", (req, res) => {
res.send(arr)
});
app.listen(3000, () => {
console.log("服务启动了")
})
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