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)}`);
}
};
其他回答
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
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>
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'],
])
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')
