‌一、GET请求

#FBrowser浏览器测试 可用
function TestA(url){  
    var req = new XMLHttpRequest();   
    req.open('GET', url, false);   
    req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //设置协议头  
    req.send();   
    return req.responseText
}
TestA('https://lumtest.com/myip.json');

‌二、POST请求

#FBrowser浏览器测试 可用
function URL_POST(url){
  var req = new XMLHttpRequest(); 
  req.open('POST', url, false); 
  req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //设置协议头
  req.send("locationType=LOCATION_INPUT&zipCode=10021&storeContext=generic&deviceType=web&pageType=Gateway&actionSource=glow"); 
  return req.responseText
}
URL_POST('http://lumtest.com/myip.json');