Javascript XMLHttpRequest - 获取响应时间

Question

如何检索像这样的请求的响应时间..

let xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4 && this.status == 200) {

}
};

Answer 1

可以存储请求前的时间，获取请求结束后的时间，将两者相减得到差值：

const before = new Date();
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
  if (this.readyState == 4 && this.status == 200) {
    const now = new Date();
    const diff = now - before;
    console.log("Took " + diff + " milliseconds");
  }
};

Javascript XMLHttpRequest - 获取响应时间

Javascript XMLHttpRequest - obtain response time

javascript

xmlhttprequest