Question

这是我的代码，

function getDateonperiod(elem)
{
    var periodval=$("#period"+elem).val();
    var days = periodval * 30;
    var startDate=new Date();
    var endDate = new Date();
    endDate.setDate(endDate.getDate() + days);
    var strDate = startDate.getFullYear() + "-" + (startDate.getMonth()+1) + "-" + startDate.getDate();
    $("#from_date"+elem).val(strDate);
    $("#to_date"+elem).val((endDate.getFullYear()+'-'+endDate.getMonth() + 1)+'-'+endDate.getDate());
}

更改输入字段值获取天数days。我正确地获取了开始日期，但是如果输入值1工作正常，则结束日期，但是从当前日期开始，它会返回多个2016-11-27 2016-21-28。如何解决这个问题？

Answer 1

你错过了一个括号：

endDate.getFullYear()+'-'+(endDate.getMonth() + 1)+'-'+endDate.getDate();

试试这个：

$( "#period" ).change(function() {
    var periodval=$("#period").val();
    var days = periodval * 30;
    var startDate=new Date();
    var endDate = new Date();
    endDate.setDate(endDate.getDate() + days);
    var strDate = startDate.getFullYear() + "-" + (startDate.getMonth()+1) + "-" + startDate.getDate();
    $("#from_date").val(strDate);
    $("#to_date").val(endDate.getFullYear()+'-'+(endDate.getMonth() + 1)+'-'+endDate.getDate());
  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" id="period"  />
<input type="text" id="from_date" />
<input type="text" id="to_date" />

Answer 2

您可以在这里使用moment.js

[user@salikhov ~/workspace/mqtt-rust $ RUST_BACKTRACE=1 cargo run
   Compiling mqtt v0.1.0 (file:///home/user/workspace/mqtt-rust)

     Running `target/debug/mqtt`
thread '<main>' panicked at 'I want line numbers!', src/proto/client.rs:33
stack backtrace:
   1:     0x7ff049fa47d9 - sys::backtrace::tracing::imp::write::he18882fa84e6b00ePnt
   2:     0x7ff049fa39b8 - panicking::on_panic::h495226a97f084523enx
   3:     0x7ff049f9dcce - sys_common::unwind::begin_unwind_inner::h7a4ee06c0d57e26affs
   4:     0x7ff049f95f47 - sys_common::unwind::begin_unwind::h13029855766851973181
                        at ../src/libstd/sys/common/unwind/mod.rs:232
   5:     0x7ff049f95e8a - proto::client::MqttConnection::connect::h633d3d42c15a3dedgYa
                        at /home/user/workspace/mqtt-rust/<std macros>:3
   6:     0x7ff049f80416 - main::h1d77c75265710f92gaa
                        at src/main.rs:5
   7:     0x7ff049fa6084 - sys_common::unwind::try::try_fn::h4848098439110500489
   8:     0x7ff049fa3098 - __rust_try
   9:     0x7ff049fa5cf8 - rt::lang_start::hcf64c98c1a7c0031Zkx
  10:     0x7ff049f834f6 - main
  11:     0x7ff049170ec4 - __libc_start_main
  12:     0x7ff049f802a8 - <unknown>
  13:                0x0 - <unknown>
An unknown error occurred

var days = 10;
var dateFormat = 'YYYY-MM-DD';
var startFormatted = moment().format(dateFormat);
var endFormatted = moment().add(days, 'day').format(dateFormat);
console.log(startFormatted)
console.log(endFormatted)

Answer 3

您没有正确添加日期。

function getDateonperiod(elem)
{
    var periodval=$("#period"+elem).val();
    var days = periodval * 30;
    var startDate=new Date();
    var endDate = new Date(startDate.getFullYear(),startDate.getMonth(),startDate.getDate()+n);
    var strDate = startDate.getFullYear() + "-" + (startDate.getMonth()+1) + "-" + startDate.getDate();
    $("#from_date"+elem).val(strDate);
    $("#to_date"+elem).val((endDate.getFullYear()+'-'+endDate.getMonth() + 1)+'-'+endDate.getDate());
}

Answer 4

只需使用此库 http://momentjs.com/

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.6/moment.min.js">

你的代码与momentjs

function getDateonperiod(elem)
{
   var periodval=$("#period"+elem).val();
   var days = periodval * 30;
   var startDate = new moment();
   var endDate = new moment();
   endDate.add(days,'days');
   var strStartDate = startDate.format("YYYY - MM - DD");
   var strEndDate = endDate.format("YYYY - MM - DD");
   $("#from_date"+elem).val(strDate);
   $("#to_date"+elem).val(strEndDate);
 }

Answer 5

我只是扩展日期功能以添加天数。这可能会对您有所帮助：

Date.prototype.addDays = function(days) {
    this.setDate(this.getDate() + parseInt(days));
    return this;
};
$("#period").change(function() {
    var periodval = $("#period").val();
    var days = periodval;
    var startDate = new Date();
    var endDate = new Date();
    endDate.addDays(days);
    //endDate.setDate(endDate.getDate() + days);
    var strDate = startDate.getFullYear() + "-" + (startDate.getMonth() + 1) + "-" + startDate.getDate();
    $("#from_date").val(strDate);
    $("#to_date").val(endDate.getFullYear() + '-' + (endDate.getMonth() + 1) + '-' + endDate.getDate());
});

根据获取开始日期和结束日期的天数

5 个答案: