我来这里是为了寻求更多的RFC 4180遵从性，但我没有找到一个实现，所以我根据自己的需要做了一个(可能效率很低)实现。我想跟大家分享一下。

var content = [['1st title', '2nd title', '3rd title', 'another title'], ['a a a', 'bb\nb', 'cc,c', 'dd"d'], ['www', 'xxx', 'yyy', 'zzz']];

var finalVal = '';

for (var i = 0; i < content.length; i++) {
    var value = content[i];

    for (var j = 0; j < value.length; j++) {
        var innerValue =  value[j]===null?'':value[j].toString();
        var result = innerValue.replace(/"/g, '""');
        if (result.search(/("|,|\n)/g) >= 0)
            result = '"' + result + '"';
        if (j > 0)
            finalVal += ',';
        finalVal += result;
    }

    finalVal += '\n';
}

console.log(finalVal);

var download = document.getElementById('download');
download.setAttribute('href', 'data:text/csv;charset=utf-8,' + encodeURIComponent(finalVal));
download.setAttribute('download', 'test.csv');

希望这能在未来帮助到一些人。这结合了CSV的编码和下载文件的能力。在jsfiddle的例子中。您可以下载该文件(假设HTML 5浏览器)或在控制台中查看输出。

更新:

Chrome现在似乎已经失去了命名文件的能力。我不确定发生了什么或如何修复它，但每当我使用这段代码(包括jsfiddle)时，下载的文件现在被命名为download.csv。

一个极简但功能完整的解决方案:)

/** Convert a 2D array into a CSV string
 */
function arrayToCsv(data){
  return data.map(row =>
    row
    .map(String)  // convert every value to String
    .map(v => v.replaceAll('"', '""'))  // escape double colons
    .map(v => `"${v}"`)  // quote it
    .join(',')  // comma-separated
  ).join('\r\n');  // rows starting on new lines
}

例子:

let csv = arrayToCsv([
  [1, '2', '"3"'],
  [true, null, undefined],
]);

结果:

"1","2","""3"""
"true","null","undefined"

现在将其下载为文件:

/** Download contents as a file
 * Source: https://stackoverflow.com/questions/14964035/how-to-export-javascript-array-info-to-csv-on-client-side
 */
function downloadBlob(content, filename, contentType) {
  // Create a blob
  var blob = new Blob([content], { type: contentType });
  var url = URL.createObjectURL(blob);

  // Create a link to download it
  var pom = document.createElement('a');
  pom.href = url;
  pom.setAttribute('download', filename);
  pom.click();
}

下载:

downloadBlob(csv, 'export.csv', 'text/csv;charset=utf-8;')

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);
            }
        }
    }-*/;
}

如果有人需要这个敲除js，它的工作好基本上提出的解决方案:

html:

<a data-bind="attr: {download: filename, href: csvContent}">Download</a>

视图模型:

// for the download link
this.filename = ko.computed(function () {
    return ko.unwrap(this.id) + '.csv';
}, this);
this.csvContent = ko.computed(function () {
    if (!this.csvLink) {
        var data = ko.unwrap(this.data),
            ret = 'data:text/csv;charset=utf-8,';

        ret += data.map(function (row) {
            return row.join(',');
        }).join('\n');

        return encodeURI(ret);
    }
}, this);

下载CSV文件

  let csvContent = "data:text/csv;charset=utf-8,";
  rows.forEach(function (rowArray) {
    for (var i = 0, len = rowArray.length; i < len; i++) {
      if (typeof (rowArray[i]) == 'string')
        rowArray[i] = rowArray[i].replace(/<(?:.|\n)*?>/gm, '');
      rowArray[i] = rowArray[i].replace(/,/g, '');
    }

    let row = rowArray.join(",");
    csvContent += row + "\r\n"; // add carriage return
  });
  var encodedUri = encodeURI(csvContent);
  var link = document.createElement("a");
  link.setAttribute("href", encodedUri);
  link.setAttribute("download", "fileName.csv");
  document.body.appendChild(link);
  link.click();

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();
        });