跨域问题汇总（2021-12-21）

[yaogengzhu]

服务端设置

response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Methods", "GET,HEAD,OPTIONS,POST,PUT");
response.setHeader("Access-Control-Allow-Headers", "Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Access-Control-Request-Headers");

[yaogengzhu]

window.postMessage

• 可以利用来解决跨域问题的通信
• 客户端 与 h5之间的交互

window.postMessage('数据： xxx')

function receive(data) {
   console.log(data) // '数据： xxx'
}
window.addEventListener('message', receive)