getFullYear()
使用 getFullYear() 獲取年份。
源代碼:
</script><!DOCTYPE html><html><body><p id="demo">Click the button to display the full year of todays date.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var d = new Date();var x = document.getElementById("demo");x.innerHTML=d.getFullYear();}</script></body></html> 測試結果:
2015
getTime()
getTime() 返回從 1970 年 1 月 1 日至今的毫秒數。
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to display the number of milliseconds since midnight, January 1, 1970.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var d = new Date();var x = document.getElementById("demo");x.innerHTML=d.getTime();}</script></body></html>
測試結果:
1445669203860
setFullYear()
如何使用 setFullYear() 設置具體的日期。
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to display a date after changing the year, month, and day.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var d = new Date();d.setFullYear(2020,10,3);var x = document.getElementById("demo");x.innerHTML=d;}</script><p>Remember that JavaScript counts months from 0 to 11.Month 10 is November.</p></body></html> 測試結果:
Tue Nov 03 2020 14:47:46 GMT+0800 (中國標準時間)
toUTCString()
如何使用 toUTCString() 將當日的日期（根據 UTC）轉換為字符串。
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to display the UTC date and time as a string.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var d = new Date();var x = document.getElementById("demo");x.innerHTML=d.toUTCString();}</script></body></html> 測試結果:
Sat, 24 Oct 2015 06:49:05 GMT
getDay()
如何使用 getDay() 和數組來顯示星期，而不僅僅是數字。
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to display todays day of the week.</p><button onclick="myFunction()">Try it</button><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 x = document.getElementById("demo");x.innerHTML=weekday[d.getDay()];}</script></body></html>
測試結果:
Saturday
Display a clock
如何在網頁上顯示一個鐘表。
源代碼:
<!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<10m=checkTime(m);s=checkTime(s);document.getElementById('txt').innerHTML=h+":"+m+":"+s;t=setTimeout(function(){startTime()},500);}function checkTime(i){if (i<10) { i="0" + i; }return i;}</script></head><body onload="startTime()"><div id="txt"></div></body></html> 新聞熱點
疑難解答
