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下拉框显示当天日期
分类:电脑知识 发表于:2010-12-19 09:49:10 评论(1)


下拉框显示当天日期代码:

<SCRIPT>

now = new Date();

function writeYears(obj, date)

{

var years = date.getYear()+100

for (var i=2010; i<2015; i++)

{

var opt = document.createElement("option")

opt.text = opt.value = i

obj.add(opt)

}

}

function writeMonths(obj)

{

for (var i=1; i<13; i++)

{

var opt = document.createElement("option")

opt.text = opt.value = Math.floor(i/10) ? i : "0"+i

obj.add(opt)

}

}

function writeDate(obj, year, month)

{

var date = new Date(""+year+"/"+(parseInt(month)+1)+"/"+0).getDate()

var selectedIndex = (date-1)<obj.selectedIndex ? (date-1) : obj.selectedIndex

var len = obj.options.length

if (date>len)

for (var i=len+1; i<=date; i++)

{

var opt = document.createElement("option")

opt.text = opt.value = Math.floor(i/10) ? i : "0"+i

obj.add(opt)

}

else

for (var i=date; i<len; i++)

{

obj.remove(obj.length-1)

}

obj.selectedIndex = selectedIndex

}

function changeDate()

{

var c_year = eval("document.forms[0].c_year")

var c_month = eval("document.forms[0].c_month")

var c_day = eval("document.forms[0].c_day")

writeDate(c_day, c_year.options(c_year.selectedIndex).value,

c_month.options(c_month.selectedIndex).value)

}

</SCRIPT>

<FORM><SELECT onchange=changeDate() name=c_year></SELECT>年<SELECT

onchange=changeDate() name=c_month></SELECT>月<SELECT

name=c_day></SELECT>日</FORM>

<SCRIPT language=javascript type=text/javascript>

writeYears(document.forms[0].c_year, now)

document.forms[0].c_year.value = now.getYear()

writeMonths(document.forms[0].c_month)

this_month = now.getMonth()+1

if (this_month<10){this_month = "0"+this_month}

document.forms[0].c_month.value = this_month

writeDate(document.forms[0].c_day, now.getYear(), now.getMonth()+1)

nowday = now.getDate()

if (nowday<10){nowday="0"+(now.getDate())*1}

document.forms[0].c_day.value = nowday

</SCRIPT>

  
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  • Lvtu 金粉Lv3 (2010-12-19 21:57:29)
    这个new好看多了! 得之,我幸;失之,我命。如是而已!