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fileuploader.js
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fileuploader.js
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var rawData = null;
$(document).ready(
function() {
// The event listener for the file upload
document.getElementById("csvFileUpload").addEventListener("change",
upload, false);
function upload(evt) {
var file = evt.target.files[0];
var reader = new FileReader();
reader.readAsText(file);
reader.onload = function(event) {
var csvData = event.target.result;
rawData = csvJSON(csvData);
if (rawData) {
localStorage.setItem("rawData", rawData);
window.location.replace("./charts.html");
} else {
alert("No data to import!");
}
};
reader.onerror = function() {
alert("Unable to read " + file.fileName);
};
}
;
});
function csvJSON(rawData){
var lines=rawData.toString().split("\n");
var result = [];
var headers=lines[0].split(",");
for(var i=1;i<lines.length;i++){
var obj = {};
var currentline=lines[i].split(",");
for(var j=0;j<headers.length;j++){
obj[headers[j]] = currentline[j];
}
result.push(obj);
}
//return result; //JavaScript object
return JSON.stringify(result); //JSON
}