强制转化成https

(function(){
  if (location.protocol !== 'https:'){
	var reg = /^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5])$/
    if(!reg.test(location.host.split(":")[0]) && location.host.indexOf('localhost') === -1){
      location.replace('https://' + location.href.split('//')[1]);
    }
  }else{
    let head = document.getElementsByTagName("head");
    let meta = document.createElement("meta");
    meta.content = "upgrade-insecure-requests";
    meta.httpEquiv = "Content-Security-Policy";
    head[0].appendChild(meta);
  }
})()