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

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');

下面是我如何在Java GWT应用程序的客户端下载CSV文件。特别感谢Xavier John的解决方案。已验证在FF 24.6.0, IE 11.0.20, Chrome 45.0.2454.99(64位)下运行。我希望这能节省一些时间:

public class ExportFile 
{

    private static final String CRLF = "\r\n";

    public static void exportAsCsv(String filename, List<List<String>> data) 
    {
        StringBuilder sb = new StringBuilder();
        for(List<String> row : data) 
        {
            for(int i=0; i<row.size(); i++)
            {
                if(i>0) sb.append(",");
                sb.append(row.get(i));
            }
            sb.append(CRLF);
        }

        generateCsv(filename, sb.toString());
    }

    private static native void generateCsv(String filename, String text)
    /*-{
        var blob = new Blob([text], { type: 'text/csv;charset=utf-8;' });

        if (navigator.msSaveBlob) // IE 10+
        { 
            navigator.msSaveBlob(blob, filename);
        } 
        else 
        {
            var link = document.createElement("a");
            if (link.download !== undefined) // feature detection
            { 
                // Browsers that support HTML5 download attribute
                var url = URL.createObjectURL(blob);
                link.setAttribute("href", url);
                link.setAttribute("download", filename);
                link.style.visibility = 'hidden';
                document.body.appendChild(link);
                link.click();
                document.body.removeChild(link);
            }
        }
    }-*/;
}

这是基于已接受答案的修改答案，其中数据将来自JSON。

            JSON Data Ouptut:
             0 :{emails: "SAMPLE Co., peter@samplecompany.com"}, 1:{emails: "Another CO. , ronald@another.com"}


            JS:
            $.getJSON('yourlink_goes_here', { if_you_have_parameters}, function(data) {
            var csvContent = "data:text/csv;charset=utf-8,";
            var dataString = '';
             $.each(data, function(k, v) {
                dataString += v.emails + "\n";
             });

            csvContent += dataString;

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

            link.click();
        });

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);
};

人们尝试创建自己的csv字符串，在边缘情况下失败，例如特殊字符，这肯定是一个解决的问题，对吧?

papaparse -用于JSON到CSV编码。Papa.unparse()。

import Papa from "papaparse";

const downloadCSV = (args) => {  

  let filename = args.filename || 'export.csv';
  let columns = args.columns || null;

  let csv = Papa.unparse({ data: args.data, fields: columns})
  if (csv == null) return;

  var blob = new Blob([csv]);
  if (window.navigator.msSaveOrOpenBlob)  // IE hack; see http://msdn.microsoft.com/en-us/library/ie/hh779016.aspx
      window.navigator.msSaveBlob(blob, args.filename);
  else
  {
      var a = window.document.createElement("a");
      a.href = window.URL.createObjectURL(blob, {type: "text/plain"});
      a.download = filename;
      document.body.appendChild(a);
      a.click();  // IE: "Access is denied"; see: https://connect.microsoft.com/IE/feedback/details/797361/ie-10-treats-blob-url-as-cross-origin-and-denies-access
      document.body.removeChild(a);
  }

}

示例使用

downloadCSV({ 
  filename: "filename.csv",
  data: [{"a": "1", "b": "2"}],
  columns: ["a","b"]
});

https://github.com/mholt/PapaParse/issues/175 -请参阅此评论了解浏览器支持讨论。