Perfect solution to NODE. JS cross-origin problems

This article mainly introduces NODE. the perfect solution for JS cross-origin problems is of great reference value. If you need a good solution, you can refer to the company's colleagues (front-end) who wrote the page over the past few days and always said they could not get the desired JSON, android iOS can get it, but he is also a newbie and doesn't know why he only knows JavaScript cross-origin problems, and then asks me why I don't know the front-end. I started Baidu,

Some people say that Google Chrome needs to be configured for cross-origin, and then I add -- disable-web-security next to Google Chrome's target.

However, it was found that an error was still reported and the desired data still could not be obtained. There will be no eyebrows when you keep searching.

Today, Baidu inspired me by the PHP cross-domain, So Baidu found node. js cross-origin problem, and finally I am in the app. the js routing settings contain a piece of cross-origin code to perfectly solve the problem:

Var express = require ('express '); var app = express (); // sets the cross-origin access 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 (0, 8088 );

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