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)}`);
    }
  };

//It work in Chrome and IE ... I reviewed and readed a lot of answer. then i used it and tested in both ... 

var link = document.createElement("a");

if (link.download !== undefined) { // feature detection
    // Browsers that support HTML5 download attribute
    var blob = new Blob([CSV], { type: 'text/csv;charset=utf-8;' });
    var url = URL.createObjectURL(blob);            
    link.setAttribute("href", url);
    link.setAttribute("download", fileName);
    link.style = "visibility:hidden";
}

if (navigator.msSaveBlob) { // IE 10+
   link.addEventListener("click", function (event) {
     var blob = new Blob([CSV], {
       "type": "text/csv;charset=utf-8;"
     });
   navigator.msSaveBlob(blob, fileName);
  }, false);
}

document.body.appendChild(link);
link.click();
document.body.removeChild(link);

//Regards

ES6的一个箭头函数:

const dataToCsvURI = (data) => encodeURI(
`data:text/csv;charset=utf-8,${data.map((row, index) =>  row.join(',')).join(`\n`)}`
);

然后:

window.open(
  dataToCsvURI(
   [["name1", "city_name1"/*, ...*/], ["name2", "city_name2"/*, ...*/]]
  )
);

如果有人在reactjs中需要这个，react-csv就在那里

您可以在原生JavaScript中做到这一点。你必须把你的数据解析成正确的CSV格式(假设你在问题中描述的数据使用数组的数组):

const rows = [
    ["name1", "city1", "some other info"],
    ["name2", "city2", "more info"]
];

let csvContent = "data:text/csv;charset=utf-8,";

rows.forEach(function(rowArray) {
    let row = rowArray.join(",");
    csvContent += row + "\r\n";
});

或者更简单的方法(使用箭头函数):

const rows = [
    ["name1", "city1", "some other info"],
    ["name2", "city2", "more info"]
];

let csvContent = "data:text/csv;charset=utf-8," 
    + rows.map(e => e.join(",")).join("\n");

然后就可以使用JavaScript的窗口了。open和encodeURI函数下载CSV文件，如下所示:

var encodedUri = encodeURI(csvContent);
window.open(encodedUri);

编辑:如果你想给你的文件一个特定的名字，你必须做一些不同的事情，因为这是不支持访问一个数据URI使用窗口。开放的方法。为了实现这一点，你可以创建一个隐藏的<a> DOM节点，并将其下载属性设置如下:

var encodedUri = encodeURI(csvContent);
var link = document.createElement("a");
link.setAttribute("href", encodedUri);
link.setAttribute("download", "my_data.csv");
document.body.appendChild(link); // Required for FF

link.click(); // This will download the data file named "my_data.csv".

这个库有很大帮助:https://www.npmjs.com/package/json-to-csv-in-browser

它自动将json数组转换为csv文件，甚至为您提供下载功能，以防您想提示web用户下载csv文件。 它用很少的代码就像一个魅力。

import { JsonArray, download } from 'json-to-csv-in-browser'

const arr = [
    {name : ` vader`, age : 53},
    {name : "what", age : 38},
    {name : "ever", age : 22}
]
const jsonArray = new JsonArray(arr);
const str = jsonArray.convertToCSVstring();
download("my.csv", str);

干杯!

编辑:再测试一下，如果你的值上有逗号，它就不能很好地工作了

适用于所有语言

        function convertToCsv(fName, rows) {
        var csv = '';
        for (var i = 0; i < rows.length; i++) {
            var row = rows[i];
            for (var j = 0; j < row.length; j++) {
                var val = row[j] === null ? '' : row[j].toString();
                val = val.replace(/\t/gi, " ");
                if (j > 0)
                    csv += '\t';
                csv += val;
            }
            csv += '\n';
        }

        // for UTF-16
        var cCode, bArr = [];
        bArr.push(255, 254);
        for (var i = 0; i < csv.length; ++i) {
            cCode = csv.charCodeAt(i);
            bArr.push(cCode & 0xff);
            bArr.push(cCode / 256 >>> 0);
        }

        var blob = new Blob([new Uint8Array(bArr)], { type: 'text/csv;charset=UTF-16LE;' });
        if (navigator.msSaveBlob) {
            navigator.msSaveBlob(blob, fName);
        } else {
            var link = document.createElement("a");
            if (link.download !== undefined) {
                var url = window.URL.createObjectURL(blob);
                link.setAttribute("href", url);
                link.setAttribute("download", fName);
                link.style.visibility = 'hidden';
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
                window.URL.revokeObjectURL(url);
            }
        }
    }



    convertToCsv('download.csv', [
        ['Order', 'Language'],
        ['1', 'English'],
        ['2', 'Español'],
        ['3', 'Français'],
        ['4', 'Português'],
        ['5', 'čeština'],
        ['6', 'Slovenščina'],
        ['7', 'Tiếng Việt'],
        ['8', 'Türkçe'],
        ['9', 'Norsk bokmål'],
        ['10', 'Ελληνικά'],
        ['11', 'беларускі'],
        ['12', 'русский'],
        ['13', 'Українська'],
        ['14', 'հայերեն'],
        ['15', 'עִברִית'],
        ['16', 'اردو'],
        ['17', 'नेपाली'],
        ['18', 'हिंदी'],
        ['19', 'ไทย'],
        ['20', 'ქართული'],
        ['21', '中国'],
        ['22', '한국어'],
        ['23', '日本語'],
    ])