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<html>https://c.runcodex.com/
<head>
<meta charset='utf-8'>
<title>This is my first program</title>
<script>
function displayDate() {
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth() + 1;
var day = date.getDay();
var hour = date.getHours();
var minute = date.getMinutes();
var second = date.getSeconds();
if(hour<10) {
hour = "0" + hour;
}
if(minute<10) {
minute = "0" + minute;
if(second<10) {
second = "0" + second;
document.getElementById("txt").innerHTML = year+"年"+month+"月"+day+"日"+hour+":"+minute+":"+second
setTimeout("displayDate()", 1000);
</script>
</head>
<body>
<p>
这是一个时间输出功能JS
</p>
<button onclick="displayDate()">
点击这里
</button>
<p id="txt">
</body>
</html>
输入 JavaScript 代码……
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输入 CSS 代码……