这是我的代码完整代码:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Date Picker</title>
</head>
<body>
<strong>Departing:</strong><br/>
<select name='dateSingleMonthDeparting' onChange='changeDate(this.options[selectedIndex].value);'>
<option value='na'>Month</option>
<option value='1'>January</option>
<option value='2'>February</option>
<option value='3'>March</option>
<option value='4'>April</option>
<option value='5'>May</option>
<option value='6'>June</option>
<option value='7'>July</option>
<option value='8'>August</option>
<option value='9'>September</option>
<option value='10'>October</option>
<option value='11'>November</option>
<option value='12'>December</option>
</select>
<select name='dateSingleDayDeparting' id='day'>
<option value='na'>Day</option>
</select>
<select name='dateSingleYearDeparting' id='year'>
<option value='na'>Year</option>
</select><br/>
<strong>Returning:</strong><br/>
<select name='dateSingleMonthReturning' onChange='changeDate(this.options[selectedIndex].value);'>
<option value='na'>Month</option>
<option value='1'>January</option>
<option value='2'>February</option>
<option value='3'>March</option>
<option value='4'>April</option>
<option value='5'>May</option>
<option value='6'>June</option>
<option value='7'>July</option>
<option value='8'>August</option>
<option value='9'>September</option>
<option value='10'>October</option>
<option value='11'>November</option>
<option value='12'>December</option>
</select>
<select name='dateSingleDayReturning' id='day'>
<option value='na'>Day</option>
</select>
<select name='dateSingleYearReturning' id='year'>
<option value='na'>Year</option>
</select>
<script>
function changeDate(i){
var e = document.getElementById('day');
while(e.length>0){
e.remove(e.length-1);
var j=-1;
if(i=="na"){
k=0;
}else if(i==2){
k=28;
}else if(i==4||i==6||i==9||i==11){
k=30;
}else{
k=31;
}
}
while(j++<k){
var s=document.createElement('option');
var e=document.getElementById('day');
if(j==0){
s.text="Day";
s.value="na";
try{
e.add(s,null);
}catch(ex){
e.add(s);
}
}
else{
s.text=j;
s.value=j;
try{
e.add(s,null);
}catch(ex){
e.add(s);
}
}
}
}
var currentTime = new Date();
y = currentTime.getFullYear()+1;
while (y-->1909){
var s = document.createElement('option');
var e = document.getElementById('year');
s.text=y;
s.value=y;
try{
e.add(s,null);
}catch(ex){
e.add(s);
}
}
</script>
</body>
</html>
我有两个日期选择器。当我更改第一个时,它可以完美地工作,但是如果我改变第二个,那么函数将在第一个datepciker中起作用
我希望他们为每个日期选择器拥有自己的功能。我该怎么做才能实现这一目标?我已经尝试过这样的东西getElementById('day day2')
,但它不起作用。
答案 0 :(得分:3)
您的select
已在标记中分配了两次ID day
和year
。那是错的。 ID应该是唯一的。
请将这些ID更改为day1,year1,day2和year2。然后将这些ID作为参数传递给函数,如changeDate(this.value, "day1", "year1")
和此changeDate(this.value, "day2", "year2")
。
现在将changeDate定义为
function changeDate(i, day, year) {
var e = document.getElementById( day ); // please note that day is the variable passed
...................
}
作为不相关的旁注,this.options[selectedIndex].value
与this.value