版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/jacke121/article/details/83684606
location.origin
var socket = io.connect(location.protocol + '//' + document.domain + ':' + location.port + namespace);
location.origin
var socket = io.connect(location.protocol + '//' + document.domain + ':' + location.port + namespace);