JavaScript中Date对象的常用方法示例

(编辑：jimmy 日期: 2024/10/5 浏览：2)
getFullYear()
使用 getFullYear() 获取年份。
源代码:
</script>
<!DOCTYPE html>
<html>
<body>
"demo">Click the button to display the full year of todays date.</p>
"myFunction()">Try it</button>
"demo");
x.innerHTML=d.getFullYear();
}
</script>
"htmlcode">

2015





getTime()

getTime() 返回从 1970 年 1 月 1 日至今的毫秒数。

源代码:


<!DOCTYPE html>
<html>
<body>
"demo">Click the button to display the number of milliseconds since midnight, January 1, 1970.</p>
"myFunction()">Try it</button>
"demo");
x.innerHTML=d.getTime();
}
</script>
"htmlcode">

1445669203860



setFullYear()

如何使用 setFullYear() 设置具体的日期。

源代码:


<!DOCTYPE html>
<html>
<body>
"demo">Click the button to display a date after changing the year, month, and day.</p>
"myFunction()">Try it</button>
"demo");
x.innerHTML=d;
}
</script>
"htmlcode">

Tue Nov 03 2020 14:47:46 GMT+0800 (中国标准时间)



toUTCString()

如何使用 toUTCString() 将当日的日期（根据 UTC）转换为字符串。
源代码:


<!DOCTYPE html>
<html>
<body>
"demo">Click the button to display the UTC date and time as a string.</p>
"myFunction()">Try it</button>
"demo");
x.innerHTML=d.toUTCString();
}
</script>
"htmlcode">

Sat, 24 Oct 2015 06:49:05 GMT



getDay()

如何使用 getDay() 和数组来显示星期，而不仅仅是数字。

源代码:


<!DOCTYPE html>
<html>
<body>
"demo">Click the button to display todays day of the week.</p>
"myFunction()">Try it</button>
"Sunday";
weekday[1]="Monday";
weekday[2]="Tuesday";
weekday[3]="Wednesday";
weekday[4]="Thursday";
weekday[5]="Friday";
weekday[6]="Saturday";
"demo");
x.innerHTML=weekday[d.getDay()];
}
</script>
"htmlcode">

Saturday



Display a clock

如何在网页上显示一个钟表。

源代码:


<!DOCTYPE html>
<html>
<head>
<script>
function startTime()
{
var today=new Date();
var h=today.getHours();
var m=today.getMinutes();
var s=today.getSeconds();
// add a zero in front of numbers<10
m=checkTime(m);
s=checkTime(s);
document.getElementById('txt').innerHTML=h+":"+m+":"+s;
t=setTimeout(function(){startTime()},500);
}
"0" + i;
 }
return i;
}
</script>
</head>
"startTime()">
<div id="txt"></div>
</body>
</html>    








        
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JavaScript中Date对象的常用方法示例

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