<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>日期操作</title>
<script>
function getDate(){
var date = new Date();
var base = new Date(date).getTime();
var oneDay = 24 * 3600 * 1000;
var date = [];
var data = [Math.random() * 300];
var time = new Date(base);
date.push([time.getFullYear(), time.getMonth() + 1, time.getDate()].join('/'));
for (var i = 1; i <7; i++) {//控制需要的天數
var now = new Date(base -= oneDay); //這裏控制往前一週還是往後一週
date.push([now.getFullYear(), now.getMonth() + 1, now.getDate()].join('/'));
data.push(Math.round((Math.random() - 0.5) * 20 + data[i - 1]));
}
var newdate = date.reverse(); //往後一週的話需要將數組倒敘，完後不需要
console.log(newdate);
console.log(newdate[0]);//需要哪天直接下標取就行了
//數據插入table顯示，可忽略
var str = "";
for (let i = 0; i < newdate.length; i++) {
str += '<tr>' + newdate[i] + '</tr></br>';
};
console.log(str);
document.getElementById("time").innerHTML = str;//拼接完字符串數組後用innerHTML把它渲染到頁面中
}
</script>
</head>
<body>
<button id="Timer" onclick="getDate()">獲取任意時間(此處獲取前7天時間)</button>
<table id="time">
</table>
</body>
</html>
轉載請註明轉自:https://leejason.blog.csdn.net/article/details/106808647