验证结束日期等于大于开始日期

Question

我想检查结束日期是否大于或等于开始日期，使用jquery验证。据验证结束日期大于开始日期，但不允许结束日期等于开始日期，

这里是我的代码 -

jQuery.validator.addMethod("greaterThan", 
function(value, element, params) { 
    if (!/Invalid|NaN/.test(new Date(value))) { 
     return new Date(value) > new Date($(params).val()); 
    } 
    return isNaN(value) && isNaN($(params).val()) 
     || (Number(value) > Number($(params).val())); 
},'Must be greater than {0}.'); 

jQuery("#collect_and_delivery").validate({ 
     errorElement:'div',    
     rules: {      
       from:{ 
         required:true 
        }, 
       to:{ 
        required:true 
       }, 
       start_date:{ 
        required:true 
       }, 
       end_date:{ 
        required:true, 
        greaterThan: "#start_date"    
       } 
     }, 
     messages: { 
       from:"Please enter collect address", 
       to:"Please enter delivery address", 
       start_date:"Please enter shipping collect date", 
       end_date: 
       { 
        required:"Please enter shipping delivery date", 
        greaterThan:"Delivery date and Collect date should be proper" 
       } 
     }     
    }); 

Answer 1

您应该使用is greater than or equal to（>=）在您的自定义方法greaterThan。

改变这一行：

return new Date(value) > new Date($(params).val()); 

要：

return new Date(value) >= new Date($(params).val()); 

享受...

Answer 2

如果你想用简单的JavaScript来比较e下日期。这是一个;简单和容易。

function compareDate() { 
    var str = document.getElementById("start_date").value; 
    var end = document.getElementById("end_date").value; 
    var year = str.substring(0,4); 
    var month = str.substring(5,7); 
    var date = str.substring(8,10); 
    var endYear = end.substring(0,4); 
    var endMonth = end.substring(5,7); 
    var endDate = end.substring(8,10); 
    var startDate = new Date(year, month-1, date); 
    var endDate = new Date(endYear, endMonth-1, endDate); 

    if (startDate > endDate) { 
     alert('start date should be less than end date'); 
     return false; 
    } 
    else { return true; } 
}