JavaScript的getday方法怎么用

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本文操作环境：windows7系统、javascript1.8.5版、Dell G3电脑。

JavaScript的getday方法怎么用？

getDay() 方法返回指定日期是星期几（从 0 到 6）。

注释：星期日为 0，星期一为 1，依此类推。

语法

复制代码Date.getDay()1
Date.getDay()
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参数：无参数。

返回值：数值，从 0 到 6，表示星期几。

代码示例：

复制代码<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可显示今天是星期几。</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var d = new Date();
  var weekday = new Array(7);
  weekday[0] = "Sunday";
  weekday[1] = "Monday";
  weekday[2] = "Tuesday";
  weekday[3] = "Wednesday";
  weekday[4] = "Thursday";
  weekday[5] = "Friday";
  weekday[6] = "Saturday";

  var n = weekday[d.getDay()];
  document.getElementById("demo").innerHTML = n;
}
</script>

</body>
</html>1
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<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可显示今天是星期几。</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var d = new Date();
  var weekday = new Array(7);
  weekday[0] = "Sunday";
  weekday[1] = "Monday";
  weekday[2] = "Tuesday";
  weekday[3] = "Wednesday";
  weekday[4] = "Thursday";
  weekday[5] = "Friday";
  weekday[6] = "Saturday";

  var n = weekday[d.getDay()];
  document.getElementById("demo").innerHTML = n;
}
</script>

</body>
</html>
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