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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<!--
Simple Attendance System by Victor
github.com/lin-ycv/AttendanceSystem | @lin-ycv
Free for personal and commercial use under the MIT license
-->
<head>
<meta charset="UTF-8">
<meta name="author" content="Yu Chieh (Victor) Lin">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>簽到系統 - Attendance</title>
<style>
body {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
text-align: center;
transition: background-color 0.5s ease;
/* Smooth background color transition */
}
#ipContainer {
height: 50vh;
display: flex;
flex-direction: column;
justify-content: flex-end;
}
#submissionContainer {
height: 50vh;
display: flex;
flex-direction: column;
justify-content: flex-start;
align-items: center;
}
.green-background {
background-color: lightgreen;
}
.subtle-text {
color: #6b6b6b;
/* Subtle grey color */
}
</style>
<script>
let ipAddress = '';
function getIP(json) {
ipAddress = json.ip;
document.getElementById("ipAddress").textContent = ipAddress;
const submitButton = document.getElementById("submitButton");
submitButton.removeAttribute("disabled");
// Enable background color change only after IP is fetched
document.body.classList.add("ip-fetched");
}
function handleSubmit(event) {
event.preventDefault();
const idValue = document.getElementById("idField").value;
if (/^[A-Za-z0-9]+$/.test(idValue)) {
//disable the submit button
document.getElementById("submitButton").disabled = true;
const submissionTime = new Date().toLocaleString();
document.getElementById("idField").style.display = "none";
document.getElementById("submitButton").style.display = "none";
const submissionInfo = document.createElement("div");
submissionInfo.innerHTML = idValue + "<br><span class='subtle-text'>" + submissionTime + "</span>";
submissionInfo.id = "submissionInfo";
const submissionContainer = document.getElementById("submissionContainer");
submissionContainer.innerHTML = `
<div>
${idValue}<br>
<span class='subtle-text'>${submissionTime}</span>
</div>
`;
// Change background color to light green
document.body.classList.add("green-background");
// Send POST request to a placeholder URL without handling response
const postData = {
id: idValue,
ip: ipAddress
};
const postUrl = "https://script.google.com/macros/s/web-app-ID/exec"; // Placeholder, replace with your own
fetch(postUrl, {
method: "POST",
body: JSON.stringify(postData)
});
} else {
alert("請輸入ID - Please enter your ID");
}
}
</script>
</head>
<body>
<div>
<div id="ipContainer">
<h1 id="ipAddress">Fetching IP address...</h1>
</div>
<div id="submissionContainer">
<form onsubmit="handleSubmit(event)">
<input type="text" id="idField" placeholder="ID">
<button id="submitButton" disabled>Submit</button>
</form>
</div>
<script src="https://api.ipify.org?format=jsonp&callback=getIP"></script>
</div>
</body>
</html>