Question

bg.js

var blob = new Blob(['dummy content'], {type: 'text/plain'});
var url = URL.createObjectURL(blob);
var fileName = fileNamePrefix + (new Date()).getTime();
console.log('debug: fileNamePrefix: ' + fileNamePrefix);
console.log('debug: fileName: ' + fileName + '.txt');
chrome.downloads.download({
  url: url,
  filename: fileName + '.txt',
  saveAs: false
}, function(id) {
  console.log('debug: download callback: id: ' + id);
});

控制台输出

bg.js:11 debug: fileNamePrefix: dummy-prefix--
bg.js:12 debug: fileName: dummy-prefix--1514054609088.txt
bg.js:18 debug: download callback: id: 39

的manifest.json

{
  "name": "DemoExt",
  "description": "",
  "version": "0.1",
  "minimum_chrome_version": "16.0.884",
  "permissions": ["contextMenus", "downloads", "storage", "<all_urls>"],
  "background": {"scripts": ["bg.js"], "persistent": false},
  "manifest_version": 2
}

为什么文件名是所有ID，而不是我提供的文件名？

Robs-Mac:~ rob$ ls Downloads/
31f4efac-2fc9-40e5-bb0b-c5aaa95d1212.txt
49833a51-e3a1-4c5a-a2c6-1f209eae7a34.txt
4b045f60-7359-42fe-89ae-df09f42a6777.txt
6f138ef2-f9da-4783-98d2-012a0fea533d.txt
6fb5f779-385e-4516-989c-aed2691e21b7.txt

Answer 1

我没有使用chrome扩展，但我以不同的方式做同样希望这对你有所帮助。这是我使用的代码

var blob = new Blob(['dummy content'], {type: 'text/plain'});
var fileName = "dummyprefix.txt";
var pom = document.createElement('a');
document.body.appendChild(pom);
pom.style = "display: none";
var url = window.URL.createObjectURL(blob)
pom.setAttribute('href', url);
pom.setAttribute('download', fileName);
pom.dataset.downloadurl = ['text/plain', pom.download, pom.href].join(':');
pom.click();
window.URL.revokeObjectURL(url);

您可能需要添加对Internet Explorer的检查。

Chrome扩展程序在将字符串下载到文件时提供文件名

1 个答案: