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
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();
其他回答
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/
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'],
])
下面是一个Angular友好的版本:
constructor(private location: Location, private renderer: Renderer2) {}
download(content, fileName, mimeType) {
const a = this.renderer.createElement('a');
mimeType = mimeType || 'application/octet-stream';
if (navigator.msSaveBlob) {
navigator.msSaveBlob(new Blob([content], {
type: mimeType
}), fileName);
}
else if (URL && 'download' in a) {
const id = GetUniqueID();
this.renderer.setAttribute(a, 'id', id);
this.renderer.setAttribute(a, 'href', URL.createObjectURL(new Blob([content], {
type: mimeType
})));
this.renderer.setAttribute(a, 'download', fileName);
this.renderer.appendChild(document.body, a);
const anchor = this.renderer.selectRootElement(`#${id}`);
anchor.click();
this.renderer.removeChild(document.body, a);
}
else {
this.location.go(`data:application/octet-stream,${encodeURIComponent(content)}`);
}
};
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();
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。
