Export HTML table to CSV file

export-html-table-to-csv-file.markdown

Export HTML table to CSV file

A Pen by Kirill Malakhov on CodePen.

License.

index.html

<table>
    <tr><th>Name</th><th>Age</th><th>Country</th></tr>
    <tr><td>Geronimo</td><td>26</td><td>France</td></tr>
    <tr><td>Natalia</td><td>19</td><td>Spain</td></tr>
    <tr><td>Silvia</td><td>32</td><td>Russia</td></tr>
</table>
<button>Export HTML table to CSV file</button>

script.js

function download_csv(csv, filename) {
    var csvFile;
    var downloadLink;

    // CSV FILE
    csvFile = new Blob([csv], {type: "text/csv"});

    // Download link
    downloadLink = document.createElement("a");

    // File name
    downloadLink.download = filename;

    // We have to create a link to the file
    downloadLink.href = window.URL.createObjectURL(csvFile);

    // Make sure that the link is not displayed
    downloadLink.style.display = "none";

    // Add the link to your DOM
    document.body.appendChild(downloadLink);

    // Lanzamos
    downloadLink.click();
}

function export_table_to_csv(html, filename) {
	var csv = [];
	var rows = document.querySelectorAll("table tr");
	
    for (var i = 0; i < rows.length; i++) {
		var row = [], cols = rows[i].querySelectorAll("td, th");
		
        for (var j = 0; j < cols.length; j++) 
            row.push(cols[j].innerText);
        
		csv.push(row.join(","));		
	}

    // Download CSV
    download_csv(csv.join("\n"), filename);
}

document.querySelector("button").addEventListener("click", function () {
    var html = document.querySelector("table").outerHTML;
	export_table_to_csv(html, "table.csv");
});

style.css

* {
    color: #2b2b2b;
    font-family: "Roboto Condensed";
}

th {
    text-align: left;
    color: #4679bd;
}

tbody > tr:nth-of-type(even) {
    background-color: #daeaff;
}

button {
    cursor: pointer;
    margin-top: 1rem;
}