标签:body nbsp roc text console sda exp str catch
html页面
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script> </head> <body> <script> var params={val:"值"} $.ajax({ type: ‘GET‘, url: ‘http://127.0.0.1:3000/‘, data: JSON.stringify(params), processData: false,//jquery是否是否处理data数据 contentType: ‘application/json‘, dataType: ‘json‘ }).then(function(ret){ console.log(ret); }).catch(function(err){ console.log(err.statusText) }) </script> </body> </html>
express服务器:
这里记得安装cors插件,为了解决跨域
npm install cors
express 服务器代码:
var express = require("express");//引入express var cors = require(‘cors‘); var app = express();//创建express实例 app.use(cors());//为了解决跨域问题 app.get("/",function(req,res){//定义路由 还有post delete方法 是express定义的 var responseObject = {//也可以是数组 数组也会转化为json name:"大伟", age:27 } res.json(responseObject) }); app.listen(3000); console.log("listening to port 3000")
启动这个服务器后,打开上面的html页面,会请求到数据!!!!
标签:body nbsp roc text console sda exp str catch
原文地址:https://www.cnblogs.com/fqh123/p/11562835.html