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
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);
其他回答
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);
}
}
}
老问题，有很多好的答案，但这里有另一个简单的选择，它依赖于两个流行的库来完成。有些回答提到了Papa Parse，但在下载部分提供了自己的解决方案。结合Papa Parse和FileSaver.js，你可以尝试以下方法:
const dataString = Papa.unparse(data, config);
const blob = new Blob([dataString], { type: 'text/csv;charset=utf-8' });
FileSaver.saveAs(blob, 'myfile.csv');
这里描述了unparse的配置选项。
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');
在Chrome 35更新中，下载属性行为发生改变。
https://code.google.com/p/chromium/issues/detail?id=373182
要在chrome中工作，使用这个
var pom = document.createElement('a');
var csvContent=csv; //here we load our csv data
var blob = new Blob([csvContent],{type: 'text/csv;charset=utf-8;'});
var url = URL.createObjectURL(blob);
pom.href = url;
pom.setAttribute('download', 'foo.csv');
pom.click();
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'],
])
