简单地尝试一下，这里的一些答案不处理unicode数据和有逗号的数据，例如date。

function downloadUnicodeCSV(filename, datasource) {
    var content = '', newLine = '\r\n';
    for (var _i = 0, datasource_1 = datasource; _i < datasource_1.length; _i++) {
        var line = datasource_1[_i];
        var i = 0;
        for (var _a = 0, line_1 = line; _a < line_1.length; _a++) {
            var item = line_1[_a];
            var it = item.replace(/"/g, '""');
            if (it.search(/("|,|\n)/g) >= 0) {
                it = '"' + it + '"';
            }
            content += (i > 0 ? ',' : '') + it;
            ++i;
        }
        content += newLine;
    }
    var link = document.createElement('a');
    link.setAttribute('href', 'data:text/csv;charset=utf-8,%EF%BB%BF' + encodeURIComponent(content));
    link.setAttribute('download', filename);
    link.style.visibility = 'hidden';
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
};

下面是一个Angular友好的版本:

  constructor(private location: Location, private renderer: Renderer2) {}

  download(content, fileName, mimeType) {

    const a = this.renderer.createElement('a');

    mimeType = mimeType || 'application/octet-stream';

    if (navigator.msSaveBlob) {

      navigator.msSaveBlob(new Blob([content], {
        type: mimeType
      }), fileName);
    }
    else if (URL && 'download' in a) {

      const id = GetUniqueID();

      this.renderer.setAttribute(a, 'id', id);
      this.renderer.setAttribute(a, 'href', URL.createObjectURL(new Blob([content], {
        type: mimeType
      })));

      this.renderer.setAttribute(a, 'download', fileName);

      this.renderer.appendChild(document.body, a);

      const anchor = this.renderer.selectRootElement(`#${id}`);

      anchor.click();

      this.renderer.removeChild(document.body, a);
    }
    else {
      this.location.go(`data:application/octet-stream,${encodeURIComponent(content)}`);
    }
  };

用csv数据创建一个blob。ie var blob = new blob ([data]， type:"text/csv");

如果浏览器支持保存blob，即如果window.navigator. msaveoropenblob)===true，则使用:window.navigator保存csv数据。“filename.csv”msSaveBlob (blob)

如果浏览器不支持保存和打开blob，则将csv数据保存为:

var downloadLink = document.createElement('<a></a>');
downloadLink.attr('href', window.URL.createObjectURL(blob));
downloadLink.attr('download', filename);
downloadLink.attr('target', '_blank');
document.body.append(downloadLink);

完整代码片段:

var filename = 'data_'+(new Date()).getTime()+'.csv';
var charset = "utf-8";
var blob = new Blob([data], {
     type: "text/csv;charset="+ charset + ";"
});
if (window.navigator.msSaveOrOpenBlob) {
     window.navigator.msSaveBlob(blob, filename);
} else {
    var downloadLink = document.element('<a></a>');
    downloadLink.attr('href', window.URL.createObjectURL(blob));
    downloadLink.attr('download', filename);
    downloadLink.attr('target', '_blank');  
    document.body.append(downloadLink); 
    downloadLink[0].click(); 
}

如果你正在寻找一个真正快速的解决方案，你也可以给这个小库一个机会，它将为你创建和下载CSV文件:https://github.com/mbrn/filefy

用法非常简单:

import { CsvBuilder } from 'filefy';

var csvBuilder = new CsvBuilder("user_list.csv")
  .setColumns(["name", "surname"])
  .addRow(["Eve", "Holt"])
  .addRows([
    ["Charles", "Morris"],
    ["Tracey", "Ramos"]
  ])
  .exportFile();

老问题，有很多好的答案，但这里有另一个简单的选择，它依赖于两个流行的库来完成。有些回答提到了Papa Parse，但在下载部分提供了自己的解决方案。结合Papa Parse和FileSaver.js，你可以尝试以下方法:

const dataString = Papa.unparse(data, config);
const blob = new Blob([dataString], { type: 'text/csv;charset=utf-8' });
FileSaver.saveAs(blob, 'myfile.csv');

这里描述了unparse的配置选项。

从react-admin:

function downloadCsv(csv, filename) {
    const fakeLink = document.createElement('a');
    fakeLink.style.display = 'none';
    document.body.appendChild(fakeLink);
    const blob = new Blob([csv], { type: 'text/csv' });
    if (window.navigator && window.navigator.msSaveOrOpenBlob) {
        // Manage IE11+ & Edge
        window.navigator.msSaveOrOpenBlob(blob, `${filename}.csv`);
    } else {
        fakeLink.setAttribute('href', URL.createObjectURL(blob));
        fakeLink.setAttribute('download', `${filename}.csv`);
        fakeLink.click();
    }
};

downloadCsv('Hello World', 'any-file-name.csv');