JavaScript Date() 日期與時間

JavaScript Date() 日期與時間

<table border="5" rules="all" style="width:100%;font-size: 22px ;height:100%"><tbody><tr><th>Method</th><th>Description</th></tr><tr><td>getDate()</td><td>Get the day as a number (1-31)</td></tr><tr><td>getDay()</td><td>Get the weekday as a number (0-6)</td></tr><tr><td>getFullYear()</td><td>Get the four digit year (yyyy)</td></tr><tr><td>getHours()</td><td>Get the hour (0-23)</td></tr><tr><td>getMilliseconds()</td><td>Get the milliseconds (0-999)</td></tr><tr><td>getMinutes()</td><td>Get the minutes (0-59)</td></tr><tr><td>getMonth()</td><td>Get the month (0-11)</td></tr><tr><td>getSeconds()</td><td>Get the seconds (0-59)</td></tr><tr><td>getTime()</td><td>Get the time (milliseconds since January 1, 1970)</td></tr></tbody></table

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<style>.Cc {width: 100%;font-size: 20px ;} .Cc td {padding: 0px 5px;} .Cc caption{font-size: 30px ;} </style> <table border="2" class ="Cc" ><tbody><caption>JavaScript Date() 日期與時間</caption> <tr><td width="350px">Date.now() </td><td><Script>document.write( Date.now()); </Script></td></tr> <tr><td>new Date().getTime() </td><td><Script>document.write(new Date().getTime()); </Script></td></tr> <tr><td>Date() </td><td><Script>document.write(Date()); </Script></td></tr> <tr><td>new Date().getFullYear()+"年"; </td><td><Script>document.write(new Date().getFullYear()+"年" ); </Script></td></tr> <tr><td>new Date().getMonth()+1+"月"; </td><td><Script>document.write(new Date().getMonth()+1+"月" ); </Script></td></tr> <tr><td>new Date().getDate()+"日"; </td><td><Script>document.write(new Date().getDate() +"日" ); </Script></td></tr> <tr><td>V= ["日","一,"二","三","四","五","六"];<br>V [ new Date().getDay() ]; </td><td><Script>var V= ["日","一","二","三","四","五","六"]; document.write(V[new Date().getDay()] ); </Script></td></tr> <tr><td>new Date().getHours()+"時"; </td><td><Script>document.write(new Date().getHours()+"時" ); </Script></td></tr> <tr><td> new Date().getMinutes()+"分"; </td><td><Script>document.write(new Date().getMinutes() +"分" ); </Script></td></tr> <tr><td> new Date().getSeconds() +"秒"; </td><td><Script>document.write(new Date().getSeconds() +"秒" ); </Script></td></tr> </tbody></table>

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<center><font size= 8> age calculator 計算年齡<br> <select style="font-size:16px;" id="Month" onchange="MD(1)"><option value="01">Jan</option><option value="02">Feb</option><option value="03">Mar</option><option value="04">Apr</option><option value="05">May</option><option value="06">Jun</option><option value="07">Jul</option><option value="08">Aug</option><option value="09">Sep</option><option value="10">Oct</option><option value="11">Nov</option><option value="12">Dec</option></select> <select style="font-size:16px;" id="DD" onchange="MD()"></select> <select style="font-size:16px;" id="Yy" onchange="MD(1)"></select> <div id="DP" style="font-size:30px;" ></div></center> <script>function SD(){ Month.options.selectedIndex =new Date().getMonth() ; var Tyy = new Date().getFullYear() ; for (i = Tyy-1 ; i > Tyy -100 ; i--){ var option = document.createElement("option"); option.text = parseInt(i)+1 ; Yy.add(option); } Yy.options.selectedIndex = 0; MD(); } SD(); function MD(xx){ /** 获取某个月的总天数 **/ var date=new Date( Yy.options[Yy.selectedIndex].text , Month.options.selectedIndex + 1 , 0); /** 获取某个月的总天数 **/ var DDD = DD.options.selectedIndex; var days=date.getDate(); var length = DD.options.length; for (i = length-1; i >= 0; i--) {DD.options[i] = null;} for (i = 0; i < days ; i++){ var option = document.createElement("option"); option.text = parseInt(i)+1 ; DD.add(option); } if(DDD == -1) {DD.options.selectedIndex=new Date().getDate()-1} else{DD.options.selectedIndex=DDD;} var ageD = Yy.options[Yy.selectedIndex].text + Month.options[Month.selectedIndex].value+ DD.options[DD.selectedIndex].text ; Show(ageD.toString() ) } function Show(d){ var today=new Date(),year=d.substr(0,4),jmonth=parseInt(d.substr(4,2),10)-1,date=d.substr(6,2); today.setHours(12,0,0,0); var hy=hm=hd=0; while (new Date(+year+1,jmonth,date).valueOf() < today.valueOf()) {year++;hy++;} while (new Date(year,+jmonth+1,date).valueOf() < today.valueOf()) {jmonth++;hm++;} while (new Date(year,jmonth,+date+1).valueOf() < today.valueOf()) {date++;hd++;} document.getElementById("DP").innerHTML=hy + " year , " + hm + " month , " + hd + " day "; } </script>

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<font size =8><center>/** 獲取某個月的總天數 **/<br><select style="font-size:16px;" id="Month" onchange="MD(1)"><option value="01">Jan</option><option value="02">Feb</option><option value="03">Mar</option><option value="04">Apr</option><option value="05">May</option><option value="06">Jun</option><option value="07">Jul</option><option value="08">Aug</option><option value="09">Sep</option><option value="10">Oct</option><option value="11">Nov</option><option value="12">Dec</option></select> <select style="font-size:16px;" id="Yy" onchange="MD(1)"></select> <div id="DP" style="font-size:30px;" ></div></center> <script>function SD(){ Month.options.selectedIndex =new Date().getMonth() ; var Tyy = new Date().getFullYear() ; for (i = Tyy-1 ; i > Tyy -100 ; i--){ var option = document.createElement("option"); option.text = parseInt(i)+1 ; Yy.add(option); } Yy.options.selectedIndex = 0; MD(); } SD(); function MD(xx){ /** 获取某个月的总天数 **/ var xx = new Date(Yy.options[Yy.selectedIndex].text , Month.options.selectedIndex + 1 , 0 ); xx = xx.getDate(); DP.innerHTML= Yy.options[Yy.selectedIndex].text + " Year " + (Month.options.selectedIndex+1) + " Month " + "共有" + xx + "days"; /** 获取某个月的总天数 **/ } </script>

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#html getDate()#html getFullYear()#html getHours()#html getMilliseconds()#html getSeconds()#html getTime()#html Date.now()#html new Date()#html Date()#html 日期與時間()#html UTC()()
#script getDate()#script getFullYear()#script getHours()#script getMilliseconds()#script getSeconds()#script getTime()#script Date.now()#script new Date()#script Date()#script 日期與時間()#script UTC()