Uploading a JSON file and using it

Question

How can I upload a JSON file on some click on a button on my web page say \"import\", and use it to store in a variable to use and update it using JavaScript.

I have

Answer 1

I have got a way to use the uploaded json file, here is the way i found.

$("#inputFile").change(function(e) {
    onChange(e);
});

function onChange(event) {
    var reader = new FileReader();
    reader.onload = onReaderLoad;
    reader.readAsText(event.target.files[0]);
}

function onReaderLoad(event){
    //alert(event.target.result);
    var obj = JSON.parse(event.target.result);
    alert(obj);
}