-我有一個下拉列表上有從中用戶可以選擇一個一些選項。驗證下拉列表以獲得基於期權正確的日期選擇
- 選項爲1天,1周,2周,1個月和6個月
-現在,當我選擇選項1天,今天的日期應該由一個遞增和顯示下一個日期。
-如果我選擇1周,一週後落的日期應顯示。
-現在的問題是,當我選擇一個選項它有時顯示日期大於30/31。
-我使用下面javacript
功能:
function select_duration(ddlcupon) {
var skillsSelect = document.getElementById("ddlcupon");
var selectedText = skillsSelect.options[skillsSelect.selectedIndex].text;
if (selectedText == "1 Day") {
var currentTime = new Date();
var month = currentTime.getMonth() + 1;
var day = currentTime.getDate() + 1;
var year = currentTime.getFullYear();
var exdate = month + "/" + day + "/" + year;
document.getElementById('<%=txtEventDate.ClientID%>').value = exdate.toString();
}
if (selectedText == "1 Week") {
var currentTime = new Date();
var month = currentTime.getMonth() + 1;
var day = currentTime.getDate() + 7;
var year = currentTime.getFullYear();
var exdate = month + "/" + day + "/" + year;
document.getElementById('<%=txtEventDate.ClientID%>').value = exdate.toString();
}
if (selectedText == "2 Weeks") {
var currentTime = new Date();
var month = currentTime.getMonth() + 1;
var day = currentTime.getDate() + 14;
var year = currentTime.getFullYear();
var exdate = month + "/" + day + "/" + year;
document.getElementById('<%=txtEventDate.ClientID%>').value = exdate.toString();
}
if (selectedText == "1 Month") {
var currentTime = new Date();
var month = currentTime.getMonth() + 2;
var day = currentTime.getDate();
var year = currentTime.getFullYear();
var exdate = month + "/" + day + "/" + year;
document.getElementById('<%=txtEventDate.ClientID%>').value = exdate.toString();
}
if (selectedText == "6 Months") {
var currentTime = new Date();
var month = currentTime.getMonth() + 7;
var day = currentTime.getDate();
var year = currentTime.getFullYear();
var exdate = month + "/" + day + "/" + year;
document.getElementById('<%=txtEventDate.ClientID%>').value = exdate.toString();
}
-有人可以幫助我得到一個合適的日期?
我相信moment.js將是在這裏你的朋友。它是一個非常好的JavaScript日期操作工具 – Hoopdady