我知道有很多这种性质的问题，但我需要使用JavaScript来做到这一点。我使用Dojo 1.8并在数组中拥有所有属性信息，它看起来像这样:
[["name1", "city_name1", ...]["name2", "city_name2", ...]]
知道我如何在客户端将此导出为CSV吗?
当前回答
就是这样:
<!doctype html>
<html>
<head></head>
<body>
<a href='#' onclick='downloadCSV({ filename: "stock-data.csv" });'>Download CSV</a>
<script type="text/javascript">
var stockData = [
{
Symbol: "AAPL",
Company: "Apple Inc.",
Price: "132.54"
},
{
Symbol: "INTC",
Company: "Intel Corporation",
Price: "33.45"
},
{
Symbol: "GOOG",
Company: "Google Inc",
Price: "554.52"
},
];
function convertArrayOfObjectsToCSV(args) {
var result, ctr, keys, columnDelimiter, lineDelimiter, data;
data = args.data || null;
if (data == null || !data.length) {
return null;
}
columnDelimiter = args.columnDelimiter || ',';
lineDelimiter = args.lineDelimiter || '\n';
keys = Object.keys(data[0]);
result = '';
result += keys.join(columnDelimiter);
result += lineDelimiter;
data.forEach(function(item) {
ctr = 0;
keys.forEach(function(key) {
if (ctr > 0) result += columnDelimiter;
result += item[key];
ctr++;
});
result += lineDelimiter;
});
return result;
}
window.downloadCSV = function(args) {
var data, filename, link;
var csv = convertArrayOfObjectsToCSV({
data: stockData
});
if (csv == null) return;
filename = args.filename || 'export.csv';
if (!csv.match(/^data:text\/csv/i)) {
csv = 'data:text/csv;charset=utf-8,' + csv;
}
data = encodeURI(csv);
link = document.createElement('a');
link.setAttribute('href', data);
link.setAttribute('download', filename);
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
</script>
</body>
</html>
其他回答
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('，')。
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);
};
我添加到Xavier Johns函数也包括字段头，如果需要，使用jQuery。美元的。对于原生javascript循环，每个位都需要更改
function exportToCsv(filename, rows, headers = false) {
var processRow = function (row) {
row = $.map(row, function(value, index) {
return [value];
});
var finalVal = '';
for (var j = 0; j < row.length; j++) {
if(i == 0 && j == 0 && headers == true){
var ii = 0;
$.each(rows[i], function( index, value ) {
//console.log(index);
var fieldName = index === null ? '' : index.toString();
//console.log(fieldName);
var fieldResult = fieldName.replace(/"/g, '""');
//console.log(fieldResult);
if (fieldResult.search(/("|,|\n)/g) >= 0){
fieldResult = '"' + fieldResult + '"';
}
//console.log(fieldResult);
if (ii > 0){
finalVal += ',';
finalVal += fieldResult;
}else{
finalVal += fieldResult;
}
ii++;
//console.log(finalVal);
});
finalVal += '\n';
//console.log('end: '+finalVal);
}
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;
}else{
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);
}
}
}
这个解决方案应该适用于Internet Explorer 10+， Edge，新旧版本的Chrome, FireFox, Safari， ++
已接受的答案不能在IE和Safari中使用。
// Example data given in question text var data = [ ['name1', 'city1', 'some other info'], ['name2', 'city2', 'more info'] ]; // Building the CSV from the Data two-dimensional array // Each column is separated by ";" and new line "\n" for next row var csvContent = ''; data.forEach(function(infoArray, index) { dataString = infoArray.join(';'); csvContent += index < data.length ? dataString + '\n' : dataString; }); // The download function takes a CSV string, the filename and mimeType as parameters // Scroll/look down at the bottom of this snippet to see how download is called var download = function(content, fileName, mimeType) { var a = document.createElement('a'); mimeType = mimeType || 'application/octet-stream'; if (navigator.msSaveBlob) { // IE10 navigator.msSaveBlob(new Blob([content], { type: mimeType }), fileName); } else if (URL && 'download' in a) { //html5 A[download] a.href = URL.createObjectURL(new Blob([content], { type: mimeType })); a.setAttribute('download', fileName); document.body.appendChild(a); a.click(); document.body.removeChild(a); } else { location.href = 'data:application/octet-stream,' + encodeURIComponent(content); // only this mime type is supported } } download(csvContent, 'dowload.csv', 'text/csv;encoding:utf-8');
运行代码片段将下载csv格式的模拟数据
归功于dandavis https://stackoverflow.com/a/16377813/1350598
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();
});
