如何从Chrome扩展向api发出http请求

"permissions": [
  "http://*/"
]

var xhr = new XMLHttpRequest();
xhr.open("GET", "http://api.example.com/data", true);
xhr.onreadystatechange = function() {
  if (xhr.readyState === 4 && xhr.status === 200) {
    var response = JSON.parse(xhr.responseText);
    // 处理API响应数据
  }
};
xhr.send();

var xhr = new XMLHttpRequest();
xhr.open("POST", "http://api.example.com/data", true);
xhr.setRequestHeader("Content-Type", "application/json");
xhr.onreadystatechange = function() {
  if (xhr.readyState === 4 && xhr.status === 200) {
    var response = JSON.parse(xhr.responseText);
    // 处理API响应数据
  }
};
var data = {
  key1: "value1",
  key2: "value2"
};
xhr.send(JSON.stringify(data));