JavaScript blob filename without link

Question

How do you set the name of a blob file in JavaScript when force downloading it through window.location?

function newFile(data) {
    var json = J         


        

Answer 1

Working example of a download button, to save a cat photo from an url as "cat.jpg":

HTML:

<button onclick="downloadUrl('https://i.imgur.com/AD3MbBi.jpg', 'cat.jpg')">Download</button>

JavaScript:

function downloadUrl(url, filename) {
  let xhr = new XMLHttpRequest();
  xhr.open("GET", url, true);
  xhr.responseType = "blob";
  xhr.onload = function(e) {
    if (this.status == 200) {
      const blob = this.response;
      const a = document.createElement("a");
      document.body.appendChild(a);
      const blobUrl = window.URL.createObjectURL(blob);
      a.href = blobUrl;
      a.download = filename;
      a.click();
      setTimeout(() => {
        window.URL.revokeObjectURL(blobUrl);
        document.body.removeChild(a);
      }, 0);
    }
  };
  xhr.send();
}

Answer 2

saveFileOnUserDevice = function(file){ // content: blob, name: string
        if(navigator.msSaveBlob){ // For ie and Edge
            return navigator.msSaveBlob(file.content, file.name);
        }
        else{
            let link = document.createElement('a');
            link.href = window.URL.createObjectURL(file.content);
            link.download = file.name;
            document.body.appendChild(link);
            link.dispatchEvent(new MouseEvent('click', {bubbles: true, cancelable: true, view: window}));
            link.remove();
            window.URL.revokeObjectURL(link.href);
        }
    }