Extend Array prototype for export to csv.

README.md

Extend Array prototype for export to csv.

Example:

var a = [];
a.push(["Nombre", "Apellido", "Edad"]);
a.push(["Juan", "Lopez", 35]);
a.push(["Gas", "De la Llana", 32]);
a.push(["Cristian", "Bertelegni", 33]);

a.toCSV(); // return csv string
a.exportCSV(); // export csv file

array_to_csv.js

/*
Extend Array prototype:
Developer: @cbertelegni

Example:
var a = [];
a.push(["Nombre", "Apellido", "Edad"]);
a.push(["Juan", "Lopez", 35]);
a.push(["Cristian", "Bertelegni", 33]);

a.toCSV(); // return csv string
a.exportCSV(); // export csv file
*/

Array.prototype.toCSV = function(){
	var arr = this;
	var csvData = [];
	for(var i = 0; i < arr.length; i++){
		var tmpArr = [];
		for(var j = 0; j < arr.length; j++){
			var nodo = ""+arr[i][j];	
			tmpStr = nodo.replace(/"/g, '""');
			tmpArr.push('"' + tmpStr + '"');
		}
		csvData.push(tmpArr.join(','));
	}
	var output = csvData.join('\n');
	return output;
};

Array.prototype.exportCSV = function(file_name){

	var output = this.toCSV();
	
	if(!file_name) {
		file_name = document.title ? document.title.replace(/ /g, "_") + ".csv" : "data.csv";
	}

	var uri = 'data:text/csv;charset=utf-8,' + encodeURIComponent(output);
	var downloadLink = document.createElement("a");
	downloadLink.href = uri;
	downloadLink.download = file_name;
	document.body.appendChild(downloadLink);
	downloadLink.click();
	document.body.removeChild(downloadLink);
};