【发布时间】：2020-11-05 06:40:21
【问题描述】：
我正在创建一个 google chrome 扩展程序并尝试在 html 表中记录数据。我目前无法尝试将行附加到我的 html 表中。我正在尝试将其移至每次用户访问新网址时另一行添加到表中的位置。
以下是我当前的代码：
Manifest.json
{
//Required naming
"name" : "Activity logger",
"version": "1.0",
"manifest_version": 2,
"description": "This support includes the development of a Chrome Browser Activity Logger.",
"content_scripts": [
{
"matches": ["<all_urls>"],
"js": ["content.js", "popup.js"]
}
],
"browser_action": {
"default_icon": "act.png",
"default_title": "Activity",
"default_popup": "popup.html"
},
"background": {
"scripts": ["background.js"]
},
"permissions": ["tabs", "storage"]
}
popup.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>
Activity Logger
</title>
<style>
*{
color:#2b2b2b;
font-family: "Roboto Condensed";
}
table{ width:40%;}
th{ text-align:left; color:#4679bd}
tbody > tr:nth-of-type(even) { background-color:#daeaff;)
button( cursor:pointer; margin-top:1rem;)
</style>
</head>
<body>
<script src="popup.js" charset="utf-8"></script>
<h2>Activity Logger</h2>
<table id = "tableID" border="1">
<!--Example table header row with the user, url visited, and time they visited the url etc-->
<tr>
<!--categories-->
<th>Browser</th>
<th>Timestamp</th>
<th>URL</th>
<th>Protocol</th>
<th>Downloaded File Names</th>
<th>Description</th>
</tr>
<tr id='myRow'>
<!--1st row-->
<td>Google</td>
<td>000000</td>
<td>https://stackoverflow.com/questions/ask</td>
<td>example</td>
<td>example</td>
<td>example</td>
</tr>
<!--Goal is to append to this table-->
</table>
<!--when clicked it, ID uses function, exportTableToCSV to download file-->
<a id="click-this">
<u> Save as CSV </u>
</a>
</body>
</html>
popup.js
//loads element url on page--draft
document.addEventListener('DOMContentLoaded', function () {
const bg = chrome.extension.getBackgroundPage()
Object.keys(bg.bears).forEach(function (url) {
const div = document.createElement('div')
div.textContent = `${url}`
document.body.appendChild(div)
})
}, false)
// creates ID to export table to csv--works
document.addEventListener('DOMContentLoaded', function() {
document.getElementById("click-this").addEventListener("click", exportTableToCSV);
});
//--underwork--
document.addEventListener('DOMContentLoaded', function() {
document.getElementById("tableID").addEventListener("click", addRow);
});
//function to append row to HTML table --underwork--
function addRow() {
//perhaps need an for loop for every page visited
//get html table
// Append product to the table
var table = document.getElementByID("tableID");
// add new empty row to the table
// 1 = in the top (say you wanna have the most recent link visited at the top row after the header)
// table.rows.length = the end
// table.rows.length/2+1 = the center (probably not useful for you)
var newRow = table.insertRow(1);
// add cells to the row
var nameCell = newRow.insertCell(0);
var urlCell = newRow.insertCell(1);
var timeCell = newRow.insertCell(2);
// add the data to the cells
nameCell.innerHTML = USERNAME;
urlCell.innerHTML = URL_VISITED;
timeCell .innerHTML = TIMESTAM;
}
//perhaps add row using JQuery--underwork
/*function addRowUsingJquery() {
// Get a reference to your table
let table = document.querySelector('#tableID');
// Build the row
let template = `
<tr>
<td>${USERNAME}</td>
<td>${URL_VISITED}</td>
<td>${TIMESTAMP}</td>
</tr>`;
// Add the row to the end of the table
table.innerHTML += template;
}
*/
//function to for onClick function--works
function downloadCSV(csv, filename) {
var csvFile;
var downloadLink;
csvFile = new Blob([csv], {type:"text/csv"});
downloadLink = document.createElement("a");
downloadLink.download = filename;
downloadLink.href = window.URL.createObjectURL(csvFile);
downloadLink.style.display = "none";
downloadLink.setAttribute("download", "data.csv");
document.body.appendChild(downloadLink);
downloadLink.click();
}
//function to export HTML table to csv file--works
function exportTableToCSV(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 file
downloadCSV(csv.join("\n"), filename);
}
【问题讨论】：
标签： javascript url google-chrome-extension html-table append