简单的datepicker验证 [英] Simple datepicker validation

问题描述

有人可以帮我写一个函数，显示一个jquery datepicker的文本行（最好是显示一个css类）通知必须出现如果选择的日期从今天到今天21天之间。

这是我需要帮助的功能，因为我不知道如何写

 < script> 
 $（function（）{
 $（#delivery_date）.datepicker（{
 dateFormat：dd / mm / yy，
}）; 
 }）; 
< / script> 
 
< input type =textid =delivery_datename =delivery_daterequired /> 
  

解决方案

您可能可以使用 date.js ，它具有流畅的API，可以很容易地表达您的条件。

示例代码可能是：

  var enteredDate = $（＃delivery_date）。 prop（value）; 
 var parsed = Date.parse（enteredDate）; 
 var start = Date.today（）; 
 var end = Date.today（）。add（21）.days（）; 
 if（！parsed.between（start，end））{
 alert（Date is valid）; 
} else {
 alert（Date not valid）; 
} 
  

Test plunker

Can someone help me write a function for showing a line of text (preferably by showing a css class) for a jquery datepicker after someone has clicked a date?

The notice has to appear IF the date picked falls between TODAY and 21 DAYS FROM TODAY.

It's the function I need help with, as I don't know how to write it.

<script>
     $(function() {
          $( "#delivery_date" ).datepicker({ 
                dateFormat: "dd/mm/yy",
          });
     });
 </script>

<input type="text" id="delivery_date" name="delivery_date" required  />

解决方案

You might be able to validate it using date.js, it has a fluent API which makes it very easy to express your conditions.

Example code might be:

var enteredDate = $("#delivery_date").prop("value");
var parsed = Date.parse(enteredDate); 
var start = Date.today();
var end = Date.today().add(21).days(); 
if (!parsed.between(start, end)) {
    alert("Date is valid");
} else {
    alert("Date is not valid");
}

Test plunker

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