当有javascript按钮时，如何从互联网下载csv文件？

<button id="downloadButton">下载CSV文件</button>

<script>
  document.getElementById("downloadButton").addEventListener("click", function() {
    // 下载CSV文件的逻辑代码
  });
</script>

document.getElementById("downloadButton").addEventListener("click", function() {
  var xhr = new XMLHttpRequest();
  xhr.open("GET", "http://example.com/path/to/csvfile.csv", true);
  xhr.responseType = "blob";

  xhr.onload = function() {
    if (xhr.status === 200) {
      var blob = xhr.response;
      var link = document.createElement("a");
      link.href = window.URL.createObjectURL(blob);
      link.download = "filename.csv";
      link.click();
    }
  };

  xhr.send();
});