javascript - HTTP请求Readystate = 4和Status = 400

我正在尝试对基于JSON的API进行POST调用，但是我一直收到Status：400，错误的请求。这是我当前的代码：

    <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>API TEST</title>
</head>
<body>
    <button onclick="myFunction()">Test</button>
    <div id="result"></div>

  <script>
      function myFunction() {
          const xhr = new XMLHttpRequest();
          xhr.onreadystatechange = function() {
              //alert(this.status);
              alert(this.readyState);
              if (this.readyState == 4 && this.status == 200) {
                  document.getElementById("result").innerHTML = this.responseText;
              }
          };
          xhr.open("POST", URL);
          xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
          xhr.send(JSON.stringify({username: "test", password: "test"}))
      }

  </script>
</body>
</html>

HTTP请求Readystate = 4和Status = 400

0 个答案: