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();
        });

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。

上面的答案是可行的，但请记住，如果你以.xls格式打开，列~~可能会用'\t'而不是'，'分隔，答案https://stackoverflow.com/a/14966131/6169225对我来说很好，只要我在数组上使用.join('\t')而不是.join('，')。

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(); 
}

基于上面的答案，我创建了这个函数，并在IE 11、Chrome 36和Firefox 29上进行了测试

function exportToCsv(filename, rows) {
    var processRow = function (row) {
        var finalVal = '';
        for (var j = 0; j < row.length; j++) {
            var innerValue = row[j] === null ? '' : row[j].toString();
            if (row[j] instanceof Date) {
                innerValue = row[j].toLocaleString();
            };
            var result = innerValue.replace(/"/g, '""');
            if (result.search(/("|,|\n)/g) >= 0)
                result = '"' + result + '"';
            if (j > 0)
                finalVal += ',';
            finalVal += result;
        }
        return finalVal + '\n';
    };

    var csvFile = '';
    for (var i = 0; i < rows.length; i++) {
        csvFile += processRow(rows[i]);
    }

    var blob = new Blob([csvFile], { 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);
        }
    }
}

例如: https://jsfiddle.net/jossef/m3rrLzk0/

我使用这个函数将字符串[][]转换为csv文件。如果单元格包含"，a或其他空格(空格除外)，则引用该单元格:

/**
 * Takes an array of arrays and returns a `,` sparated csv file.
 * @param {string[][]} table
 * @returns {string}
 */
function toCSV(table) {
    return table
        .map(function(row) {
            return row
                .map(function(cell) {
                    // We remove blanks and check if the column contains
                    // other whitespace,`,` or `"`.
                    // In that case, we need to quote the column.
                    if (cell.replace(/ /g, '').match(/[\s,"]/)) {
                        return '"' + cell.replace(/"/g, '""') + '"';
                    }
                    return cell;
                })
                .join(',');
        })
        .join('\n'); // or '\r\n' for windows

}

注意:不工作在Internet Explorer < 11除非地图是填充。

注意:如果单元格包含数字，你可以在If (cell.replace…将数字转换为字符串。

或者你可以用ES6在一行中写:

t.map(r=>r.map(c=>c.replace(/ /g, '').match(/[\s,"]/)?'"'+c.replace(/"/g,'""')+'"':c).join(',')).join('\n')