I am developing a web page in Wordpress. The webpage needs to have a combobox with all counties. I have a dataset in csv format which has some 10k rows for all these counties.
When the user selects a county in the dropdown, I want only the selected county data displayed in the web page. This is my requirement.

In wordpress, my web page I am adding the js file using 

```
<script type="text/javascript" src="http://xxx/wp     content/uploads/2014/05/countyList1.js"></script>

```

and the code for webpage dropdown is 

```
<select name="county" id="county" onload="setCounties();" onchange="getSelectedCountyData();"></select>

```

In countyList1.js file I have the setCounties() and getSelectedCountyData() functions.

So far I can see the dropdown with counties list. I don't know how to read the CSV file and apply the selected county filter to this list.

I tried the FileReader object and I can load the CSV contents on the web page but I don't want the user to select the CSV. I have the dataset already.

I am trying to use this jquery.csv-0.71 library from this SO post [How to read data From \*.CSV file using javascript?](https://stackoverflow.com/questions/7431268/how-read-data-from-csv-file-using-javascript/12289296#12289296) but I need help.

Here's the code which gets called when a county is selected

```
function getSelectedCountyData() {
        cntrySel = document.getElementById('county');
        //selCty = countyList[cntrySel.value];
        handleFiles();
}

function handleFiles() {

    $(document).ready(function () {
        $.ajax({
            type: "GET",
            url: "D:\Docs\Desktop\csvfile.csv",
            dataType: "csv",
            success: function (data) { processData(data); }
        });
    });
}

function processData(allText) {
    var allTextLines = allText.split(/\r\n|\n/);
    var headers = allTextLines[0].split(',');
    var lines = [];

    for (var i = 1; i < allTextLines.length; i++) {
        var data = allTextLines[i].split(',');
        if (data.length == headers.length) {

            var tarr = [];
            for (var j = 0; j < headers.length; j++) {
                tarr.push(headers[j] + ":" + data[j]);
            }
            lines.push(tarr);
        }
    }
    console.log(lines);
    drawOutput(lines);
}

function drawOutput(lines) {
    //Clear previous data
    document.getElementById("output").innerHTML = "";
    var table = document.createElement("table");
    for (var i = 0; i < lines.length; i++) {
        var row = table.insertRow(-1);
        for (var j = 0; j < lines[i].length; j++) {
            var firstNameCell = row.insertCell(-1);
            firstNameCell.appendChild(document.createTextNode(lines[i][j]));
        }
    }
    document.getElementById("output").appendChild(table);
}

```