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?
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
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');
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')
下面是一个原生的js解决方案。
function export2csv() { let data = ""; const tableData = []; const rows = [ ['111', '222', '333'], ['aaa', 'bbb', 'ccc'], ['AAA', 'BBB', 'CCC'] ]; for (const row of rows) { const rowData = []; for (const column of row) { rowData.push(column); } tableData.push(rowData.join(",")); } data += tableData.join("\n"); const a = document.createElement("a"); a.href = URL.createObjectURL(new Blob([data], { type: "text/csv" })); a.setAttribute("download", "data.csv"); document.body.appendChild(a); a.click(); document.body.removeChild(a); } <button onclick="export2csv()">Export array to csv file</button>
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'],
])