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
//It work in Chrome and IE ... I reviewed and readed a lot of answer. then i used it and tested in both ...
var link = document.createElement("a");
if (link.download !== undefined) { // feature detection
// Browsers that support HTML5 download attribute
var blob = new Blob([CSV], { type: 'text/csv;charset=utf-8;' });
var url = URL.createObjectURL(blob);
link.setAttribute("href", url);
link.setAttribute("download", fileName);
link.style = "visibility:hidden";
}
if (navigator.msSaveBlob) { // IE 10+
link.addEventListener("click", function (event) {
var blob = new Blob([CSV], {
"type": "text/csv;charset=utf-8;"
});
navigator.msSaveBlob(blob, fileName);
}, false);
}
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
//Regards
其他回答
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 = '';
$.each(data, function(k, v) {
dataString += v.emails + "\n";
});
csvContent += dataString;
var encodedUri = encodeURI(csvContent);
var link = document.createElement("a");
link.setAttribute("href", encodedUri);
link.setAttribute("download", "your_filename.csv");
document.body.appendChild(link); // Required for FF
link.click();
});
一个极简但功能完整的解决方案:)
/** Convert a 2D array into a CSV string
*/
function arrayToCsv(data){
return data.map(row =>
row
.map(String) // convert every value to String
.map(v => v.replaceAll('"', '""')) // escape double colons
.map(v => `"${v}"`) // quote it
.join(',') // comma-separated
).join('\r\n'); // rows starting on new lines
}
例子:
let csv = arrayToCsv([
[1, '2', '"3"'],
[true, null, undefined],
]);
结果:
"1","2","""3"""
"true","null","undefined"
现在将其下载为文件:
/** Download contents as a file
* Source: https://stackoverflow.com/questions/14964035/how-to-export-javascript-array-info-to-csv-on-client-side
*/
function downloadBlob(content, filename, contentType) {
// Create a blob
var blob = new Blob([content], { type: contentType });
var url = URL.createObjectURL(blob);
// Create a link to download it
var pom = document.createElement('a');
pom.href = url;
pom.setAttribute('download', filename);
pom.click();
}
下载:
downloadBlob(csv, 'export.csv', 'text/csv;charset=utf-8;')
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>
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。
您可以在原生JavaScript中做到这一点。你必须把你的数据解析成正确的CSV格式(假设你在问题中描述的数据使用数组的数组):
const rows = [
["name1", "city1", "some other info"],
["name2", "city2", "more info"]
];
let csvContent = "data:text/csv;charset=utf-8,";
rows.forEach(function(rowArray) {
let row = rowArray.join(",");
csvContent += row + "\r\n";
});
或者更简单的方法(使用箭头函数):
const rows = [
["name1", "city1", "some other info"],
["name2", "city2", "more info"]
];
let csvContent = "data:text/csv;charset=utf-8,"
+ rows.map(e => e.join(",")).join("\n");
然后就可以使用JavaScript的窗口了。open和encodeURI函数下载CSV文件,如下所示:
var encodedUri = encodeURI(csvContent);
window.open(encodedUri);
编辑:如果你想给你的文件一个特定的名字,你必须做一些不同的事情,因为这是不支持访问一个数据URI使用窗口。开放的方法。为了实现这一点,你可以创建一个隐藏的<a> DOM节点,并将其下载属性设置如下:
var encodedUri = encodeURI(csvContent);
var link = document.createElement("a");
link.setAttribute("href", encodedUri);
link.setAttribute("download", "my_data.csv");
document.body.appendChild(link); // Required for FF
link.click(); // This will download the data file named "my_data.csv".