我想創建一個日曆,我有兩個問題。在Javascript中創建日曆(Html)
- 月份不會顯示爲文本,而是顯示爲數字。
- 當我更改月份時,日子也不會更新。幾個月有不同的天數,因此選擇的天數選擇需要根據月份選擇中的選擇進行更新。
日/月/年。
下面是HTML代碼:
<form>
<select id="day" name="day">
</select>
<select id ="month" onchange = "changeDays(this)" name="month" >
</select>
<select id="year" name="year">
</select>
</form>
</div>
下面是Javascript代碼:
setCalendar('day',1, 31, false);
setCalendar('month',1, 12, false);
setCalendar('year',1910, 2017, false);
function setCalendar(id, min, max, logic){
if(logic){
removeOptions(id);
}
var monthsarray = ["January", "February","March" ,"April" ,"May" ,"June" ,"July" ,"August" ,"September", "October", "November" , "December"];
for (i = min; i <= max; i++){
select = document.getElementById(id);
var opti = document.createElement("option");
opti.value = i;
opti.text = id === "day" || "year" ? i.toString() : monthsarray[i-1];
select.add(opti);
}
}
function changeDays(SelectObject){
switch(SelectObject){
case 1:
//January
setCalendar('day',1,31,true);
break;
case 2:
//February
setCalendar('day',1,28,true);
break;
case 3:
//March
setCalendar('day',1,31,true);
break;
case 4:
//April
setCalendar('day',1,30,true);
break;
case 5:
//May
setCalendar('day',1,31,true);
break;
case 6:
//June
setCalendar('day',1,30,true);
break;
case 7:
//July
setCalendar('day',1,31,true);
break;
case 8:
//August
setCalendar('day',1,31,true);
break;
case 9:
//September
setCalendar('day',1,30,true);
break;
case 10:
//October
setCalendar('day',1,31,true);
break;
case 11:
//November
setCalendar('day',1,30,true);
break;
case 12:
//December
setCalendar('day',1,31,true);
break;
}
}
function removeOptions(selectObject)
{
var i;
for(i = selectObject.options.length - 1 ; i >= 0 ; i--)
{
selectObject.remove(i);
}
}
'ID ===「日「|| 「year」'錯了:應該是'id ===「day」|| id ===「year」' – Pointy
您確定不想使用該工作中已有的幾千個插件之一嗎? – Dinei
你不應該把'this'作爲參數傳遞給那個函數。它應該已經可以訪問。 –