validation for start and end date in js

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hi everyone,
Can anyone show how to write the java script code for start date and end date validation ....

Posted 25-Sep-12 1:19am

GowthamVenkatesan

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2 solutions

Solution 1

Hi i think it's helpfull to you

SQL

function checkDOJ(sender, args) {
               if (sender._selectedDate < new Date()) {
                   alert("You cannot select a day earlier than today!");
                   sender._selectedDate = new Date();
                   // set the date back to the current date
                   sender._textbox.set_Value(sender._selectedDate.format(sender._format))
               }
           }

           function checkDOB(sender, args) {
               if (sender._selectedDate > new Date()) {
                   alert("You cannot select a day Greater than today!");
                   sender._selectedDate = new Date();
                   // set the date back to the current date
                   sender._textbox.set_Value(sender._selectedDate.format(sender._format))
               }

Regards...........

Balaji
www.leaderbalaji.blogspot.com

Posted 25-Sep-12 1:25am

Balu Balaji

Comments

GowthamVenkatesan 25-Sep-12 7:34am

thanks for your replay, for my question, i just a beginer,so i dont know how to call this .js function through html... so pls show how to do html code for this corresponding .js file

regards,
Gowtham.V

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**Zoltán Zörgő** · Accepted Answer · 2012-09-25T02:05:00

Validating what? What is the format you want to accept? What is the semantic of acceptable values - besides the obvious, that end date has to be greater than start date?

But you can start out from this one:

JavaScript

<script>
function IsValidDate(date){
    var D,M,Y;
    var re= /^(\d{4})-(\d{1,2})-(\d{1,2})$/; //YYYY-M-D, YYYY-MM-D, YYYY-M-DD, YYYY-MM-DD
    
	var match = date.match(re);
    if(!match) return false;
    
    Y = 1*match[1];
    M = 1*match[2];
    D = 1*match[3];

    var dt = new Date(Y,M-1,D);
 
    if(dt.getDate()!=D){
        return(false);
    }
    else if(dt.getMonth()!=M-1){
        return(false);
    }
    else if(dt.getFullYear()!=Y){
        return(false);
    }
        
    return(dt);
 }

function ValidateDateInput(id) {
var result = IsValidDate(document.getElementById(id).value);
if (result) 
	document.getElementById(id).style.color="green";	
else
   document.getElementById(id).style.color="red";
return result;
}
 
function validate(){
  var date1 = ValidateDateInput("date_1");
  var date2 = ValidateDateInput("date_2");
  if (date1 && date2 && date1 < date2 )
	  document.getElementById("dates").style.backgroundColor="green";	
  else
      document.getElementById("dates").style.backgroundColor="red";	
} 
 
</script>
<div id="dates">
Date1: <input type="text" id="date_1" name="date_1" value="2012-02-10">
Date2: <input type="text" id="date_2" name="date_2" value="2012-02-12">
<button onclick="validate();">Let's see</button>
</div>