Javascript表单验证，检查日期是否通过

Question

我正在尝试验证此处的表单，并且快完成了。唯一的问题是我无法找到一种方法来验证日期字段以检查输入的日期是否尚未过去。它必须通过 Javascript 完成...顺便说一句，这是 HTML:

<label for="reservationDate">Date of reservation (DD/MM/YYYY):</label>

<input type="text" id="date" name="date" onblur="validateDate(date)">

<span id="dateError" style="display: none;">Please enter your date of reservation in this format DD/MM/YYYY</span>

这是 JavaScript:

function validateDate(x) {
   var re = /^(\d{1,2})[-/.](\d{1,2})[-/.](\d{4})$/;
   if(re.test(document.getElementById(x).value)){ 
        document.getElementById(x).style.background ='#ccffcc'; 
        document.getElementById(x + 'Error').style.display = "none"; 
        return true;
   } else{ 
        document.getElementById(x).style.background ='#e35152'; 
        document.getElementById(x + 'Error').style.display = "block"; 
        return false; 
   }
}

希望有人能帮忙:)

Answer 1

这里有一些代码可以使其成为满足您需求的特定答案:

function validateDate(x) {
   var re = /^(\d{1,2})[-/.](\d{1,2})[-/.](\d{4})$/;
   var entered = new Date(document.getElementById(x).value);
   var today = new Date();
   if( entered > today ) {
        document.getElementById(x).style.background ='#ccffcc'; 
        document.getElementById(x + 'Error').style.display = "none"; 
        return true;
   } else{ 
        document.getElementById(x).style.background ='#e35152'; 
        document.getElementById(x + 'Error').style.display = "block"; 
        return false; 
   }
}

这是经过测试的工作代码:http://jsfiddle.net/digitalextremist/rwhhg/1/

过去的一些答案只是一些片段，但并不是全部:

• Check if date is in the past Javascript
• Validate that end date is greater than start date with jQuery
• Javascript to validate date entered