window.location.origin显示undefined解决办法

原因：浏览器不同所导致的兼容问题

解决办法：

if (!window.location.origin) {
    let location = window.location.protocol + "//" + window.location.hostname + (window.location.port ? ':' + window.location.port: '');
}else{
    let location= window.location.origin;
}