浏览器下载

download.js

download(name, data) {
        const urlObject = window.URL || window.webkitURL || window;
        const exportBlob = new Blob([data]);
        const MIME_TYPE = 'text/plain'
        const a = document.createElement('a');
        a.download = name;
        a.href = window.URL.createObjectURL(exportBlob);
        a.textContent = 'Download ready';
        a.dataset.downloadurl = [MIME_TYPE, a.download, a.href].join(':');
        a.click();
},

// use
// data 是后台返回的下载流
// this.download('test.txt', data)