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Convert json object to csv download link javascript
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// Sample: download json as excel file (BOM + utf-16le encoding) | |
// reference: | |
// https://gist.github.com/maciejjankowski/2db91642fb9eaa771111f2c0538e4560 | |
// | |
<script> | |
function JSON2CSV(objArray) { | |
var array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray; | |
var str = ''; | |
var line = ''; | |
// header | |
var head = array[0]; | |
for (var index in array[0]) { | |
var value = index + ""; | |
line += '"' + value.replace(/"/g, '""') + '",'; | |
} | |
line = line.slice(0, -1); | |
str += line + '\r\n'; | |
// data | |
for (var i = 0; i < array.length; i++) { | |
var line = ''; | |
for (var index in array[i]) { | |
var value = array[i][index] + ""; | |
line += '"' + value.replace(/"/g, '""') + '",'; | |
} | |
line = line.slice(0, -1); | |
str += line + '\r\n'; | |
} | |
return str; | |
} | |
$(function() { | |
$("#btnDownloadCSV").click(function() { | |
var json = <%- JSON.stringify(eventDatas) %> | |
var csv = JSON2CSV(json); | |
// download link | |
var a = document.createElement("a"); | |
a.style = "display: none"; | |
// Data URI | |
var bom = decodeURIComponent("%EF%BB%BF");// "\uFEFF\n"; | |
var byteArray = []; | |
csv = bom + csv; | |
csvA = new Uint16Array(csv.split('').map( function(k, v){ | |
return k.charCodeAt(0); | |
})); | |
var blob = new Blob([csvA],{type:'text/csv;charset=UTF-16LE;'}); | |
var blobUrl=URL.createObjectURL(blob); | |
a.href = blobUrl; | |
a.download = "report.csv"; | |
document.body.appendChild(a); | |
a.click(); | |
}); | |
}); | |
</script> |
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