Method: 1. Use "Date('Year-Month-Day Hour:Minute:Second');" to obtain the date object of the specified time; 2. Use "date object.getDay();" to obtain the specified time The time represents the number of a certain day of the week; 3. Use the obtained number as a subscript to retrieve the day of the week in the specified array.
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
The Date object is used to process date and time.
Create a Date object: new Date()
The following four methods can also create a Date object:
var d = new Date(); var d = new Date(milliseconds); var d = new Date(dateString); var d = new Date(year, month, day, hours, minutes, seconds, milliseconds);
The getDay() method can return a week (0~6) Number for a certain day.
The syntax is:
Date.getDay()
The return value is an integer between 0 (Sunday) and 6 (Saturday).
The example is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>123</title>
</head>
<body>
<p id="demo">单击按钮显示一周中的今天</p>
<button onclick="myFunction()">点我</button>
<script>
function myFunction(){
var d = new Date('2022-4-10 11:53:04');
var x = d.getDay();
var weeks = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");
var week = weeks[x];
var y = document.getElementById("demo");
y.innerHTML=week;
}
</script>
</body>
</html>Output result:
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