The perfect solution to NODE.JS cross-domain problems

In the past few days, when a company colleague (front-end) wrote a page, he kept saying that he couldn't get the JSON he wanted. It is available on Android and iOS, but he is also a newbie and doesn't know why. He only knows that it is a js cross-domain problem. , and then asked me that I didn’t understand the front-end, so I started Baidu.

Some people said that Google Chrome needs to be set up cross-domain, and then I added a --disable-web-security after the target of Google Chrome.

#But later I found that an error was still reported and the desired data was still not available. Later, I kept looking around and found nothing.

Until today, I was inspired by the cross-domain problem of PHP on Baidu, so Baidu found the cross-domain problem of node.js. Finally, I added a cross-domain code in the app.js routing settings to perfectly solve the problem:

var express = require('express');
var app = express();
//设置跨域访问
app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By",' 3.2.1');
res.header("Content-Type", "application/json;charset=utf-8");
next();
});
//app.listen(8088);

The above is the perfect solution to the NODE.JS cross-domain problem introduced by the editor. I hope it will be helpful to you. If you have any questions, please leave me a message. , the editor will reply to everyone in time. I would also like to thank you all for your support of the PHP Chinese website!

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