Date_2 always higher Date_1 in the selectIndex

Mike1961

Hello everyone.

I have this html page:

Expand|Select|Wrap|Line Numbers

 
<html>
 
<head>
 
</head>
 
<body>
 
<select size="1" name="date_1" onChange="window.document.location='Tot.asp?date_2=24/04/2008&date_1='+this.options[this.selectedIndex].value;">

<option>select</option>

<option value="11/03/2008">11/03/2008</option>

<option value="12/03/2008">12/03/2008</option>

<option value="13/03/2008">13/03/2008</option>

<option value="14/03/2008">14/03/2008</option>

<option value="17/03/2008">17/03/2008</option>
 
</select>
 
<select size="1" name="date_2" onChange="window.document.location='Tot.asp?date_1=24/04/2008&date_2='+this.options[this.selectedIndex].value;">

<option>select</option> 

<option value="11/03/2008">11/03/2008</option>

<option value="12/03/2008">12/03/2008</option>

<option value="13/03/2008">13/03/2008</option>

<option value="14/03/2008">14/03/2008</option>

<option value="17/03/2008">17/03/2008</option>

</select>
 
</body>
 
</html>

I would like javascript function check that:

date_1 = 24/04/2008
date_2 = 25/04/2008

it's right....

date_1 = 25/04/2008
date_2 = 24/04/2008

it's wrong....

Check that date_2 always higher date_1, it's possible?

Apr 26 '08 #1

Subscribe Post Reply

1532

acoder

16,027

Expert Mod 8TB

You're setting document.location. This is deprecated in favour of window.location.href.

Do you want to make the check onchange? You'll have to call a function to make the check before you change the URL unless you're planning to make the check on the server-side.

To make sure Date_2 is always higher than Date1 , make two Date objects, set the dates using the setFullYear method and then make a simple comparison:

Expand|Select|Wrap|Line Numbers

if (date1 > date2) //alert...

Date Object reference

Apr 26 '08 #2

Mike1961

Hi acoder.

thanks for your reply, but i dont understand your suggestion :

[php]

<html>

<head>

<SCRIPT LANGUAGE=Javascript>

var date_1, date_2;

if ( date_1 > date_2 )
alert( 'Stop !.' );

</SCRIPT>

</head>

<body>

<select size="1" name="date_1" onChange="window.location.href='Tot.asp?date_2=24/04/2008&date_1='+this.options[this.selectedIndex].value;">
<option>select</option>
<option value="11/03/2008">11/03/2008</option>
<option value="12/03/2008">12/03/2008</option>
<option value="13/03/2008">13/03/2008</option>
<option value="14/03/2008">14/03/2008</option>
<option value="17/03/2008">17/03/2008</option>

</select>

<select size="1" name="date_2" onChange="window.location.href='Tot.asp?date_1=24/04/2008&date_2='+this.options[this.selectedIndex].value;">
<option>select</option>
<option value="11/03/2008">11/03/2008</option>
<option value="12/03/2008">12/03/2008</option>
<option value="13/03/2008">13/03/2008</option>
<option value="14/03/2008">14/03/2008</option>
<option value="17/03/2008">17/03/2008</option>
</select>

</body>

</html>

[/php]

Not working... can you tell me where the point when I was wrong ?

Apr 26 '08 #3

acoder

16,027

Expert Mod 8TB

No, it doesn't work like that.

Put the code into a function and call it, e.g.

Expand|Select|Wrap|Line Numbers

 function dateValidate() {

// code goes here

}

See how to use the Date object here.

When do you want to call this code? When you press the submit button?

Apr 26 '08 #4

Mike1961

No, it doesn't work like that.

Put the code into a function and call it, e.g.

Expand|Select|Wrap|Line Numbers

function dateValidate() {

// code goes here

}

See how to use the Date object here.

When do you want to call this code? When you press the submit button?

OK, but this page is not a form...nothing submit button, only onchange event...

Apr 26 '08 #5

acoder

16,027

Expert Mod 8TB

OK, but this page is not a form...nothing submit button, only onchange event...

So call the function in the onchange event handler. It might be a good idea to move the location.href into the function too. If it validates, send the user off to the next page. If it doesn't, alert the error.

Apr 26 '08 #6

Mike1961

One example, please acoder... I am newbie...

Apr 26 '08 #7

acoder

16,027

Expert Mod 8TB

OK, have a look at this example:

Expand|Select|Wrap|Line Numbers

 <script type="text/javascript"> 

function validateDate() {

  var date1, date2, date_1, date_2;

  // get date1 value

  date1 = document.getElementById("date1").value;

  // split the values to get the date/month/year

  date1 = date1.split("/");

  //create new date object

  date_1 = new Date();

  // set the date - see ref

  date_1.setFullYear(date1[2],date1[1]-1,date1[0]);

  // ...

  // repeat for date2...

  //...

  // now compare

  if ( date_1 > date_2 ) {

    alert( 'Stop !.' );

  else {

    window.location.href = 'Tot.asp?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));

  }

}

For the select elements, add ids and change the onchange to call the function:

Expand|Select|Wrap|Line Numbers

<select id="date1" size="1" name="date_1" onchange="validateDate()">

Apr 27 '08 #8

Mike1961

Thanks x your reply, but not working... the link:

http://www11.asphost4free.com/Miguel61/

Apr 27 '08 #9

acoder

16,027

Expert Mod 8TB

You'll also have to add a check that the date1 and date2 values are not empty (the first option Seleziona) :

Expand|Select|Wrap|Line Numbers

if (date1.value == "") return;

Add a value attribute for the first option:

Expand|Select|Wrap|Line Numbers

 <select ...>

<option value="">Seleziona</option>

Apr 28 '08 #10

Mike1961

You'll also have to add a check that the date1 and date2 values are not empty (the first option Seleziona) :

Expand|Select|Wrap|Line Numbers

if (date1.value == "") return;

Add a value attribute for the first option:

Expand|Select|Wrap|Line Numbers

<select ...>

<option value="">Seleziona</option>

Sorry... I can not... :

[php]
code:<HTML>
<HEAD>
<TITLE>2007</TITLE>

<script type="text/javascript">

function validateDate()

{
var date1, date2, date_1, date_2;
// get date1 value
date1 = document.getElementById("date1").value;
// split the values to get the date/month/year
date1 = date1.split("/");
//create new date object
date_1 = new Date();
// set the date - see ref
date_1.setFullYear(date1[2],date1[1]-1,date1[0]);

// repeat for date2...
// get date2 value
date2 = document.getElementById("date2").value;
// split the values to get the date/month/year
date2 = date2.split("/");
//create new date object
date_2 = new Date();
// set the date - see ref
date_2.setFullYear(date2[2],date2[1]-1,date2[0]);

//...
// now compare

if (date1.value == "") return;

if ( date_1 > date_2 )

{
alert ("Stop");
}

else

{
window.location.href = 'index.htm?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));

}
}

</script>
</HEAD>
<BODY>

<select id="date1" name="date_1" onchange="validateDate()">
<option value="">Seleziona</option>
<option value="19/07/2007">19/08/2007</option>
<option value="19/08/2007">19/09/2007</option>
<option value="19/09/2007">19/10/2007</option>
</select>

<select id="date2" name="date_2" onchange="validateDate()">
<option value="">Seleziona</option>
<option value="29/07/2007">29/05/2007</option>
<option value="29/08/2007">29/06/2007</option>
<option value="29/09/2007">29/07/2007</option>
</select>

</BODY>
</HTML>

[/php]

Apr 28 '08 #11

acoder

16,027

Expert Mod 8TB

You didn't add the javascript:

Expand|Select|Wrap|Line Numbers

   // get date1 value

  date1 = document.getElementById("date1").value;

  if (date1 == "") return;

Apr 28 '08 #12

Mike1961

You didn't add the javascript:

Expand|Select|Wrap|Line Numbers

  // get date1 value

  date1 = document.getElementById("date1").value;

  if (date1 == "") return;

thanks, but:

Object doesn't support this property or method

in the line:

[php]
window.location.href = 'index.htm?date_1=' + encodeURIComponent date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));
[/php]

Apr 28 '08 #13

acoder

16,027

Expert Mod 8TB

The opening bracket went missing:

Expand|Select|Wrap|Line Numbers

 window.location.href = 'index.htm?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));
 
 

Apr 28 '08 #14

Mike1961

No... the same error...

[php]
code:<HTML>
<HEAD>
<TITLE>2007</TITLE>

<script type="text/javascript">

function validateDate()

{
var date1, date2, date_1, date_2;
// get date1 value
date1 = document.getElementById("date1").value;
// split the values to get the date/month/year
date1 = date1.split("/");
//create new date object
date_1 = new Date();
// set the date - see ref
date_1.setFullYear(date1[2],date1[1]-1,date1[0]);

// repeat for date2...
// get date2 value
date2 = document.getElementById("date2").value;
// split the values to get the date/month/year
date2 = date2.split("/");
//create new date object
date_2 = new Date();
// set the date - see ref
date_2.setFullYear(date2[2],date2[1]-1,date2[0]);

//...
// now compare

date1 = document.getElementById("date1").value;
if (date1.value == "") return;

if ( date_1 > date_2 )

{
alert ("Stop");
}

else

{
//window.location.href = 'index.htm?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));
window.location.href = 'index.htm?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));

}
}

</script>
</HEAD>
<BODY>

<select id="date1" name="date_1" onchange="validateDate()">
<option value="">Seleziona</option>
<option value="19/07/2007">19/08/2007</option>
<option value="19/08/2007">19/09/2007</option>
<option value="19/09/2007">19/10/2007</option>
</select>

<select id="date2" name="date_2" onchange="validateDate()">
<option value="">Seleziona</option>
<option value="29/07/2007">29/05/2007</option>
<option value="29/08/2007">29/06/2007</option>
<option value="29/09/2007">29/07/2007</option>
</select>

</BODY>
</HTML>

[/php]

Apr 28 '08 #15

acoder

16,027

Expert Mod 8TB

Remove line 33.

Line 34 should go where line 13 is, i.e. after line 12. Do you understand where you went wrong? join() is a method of an Array object and you made date1 into a string.

Repeat the empty string check for date2 too.

Apr 28 '08 #16

Mike1961

Remove line 33.

Line 34 should go where line 13 is, i.e. after line 12. Do you understand where you went wrong? join() is a method of an Array object and you made date1 into a string.

Repeat the empty string check for date2 too.

No, not understand.... :-(

Apr 28 '08 #17

acoder

16,027

Expert Mod 8TB

Expand|Select|Wrap|Line Numbers

 function validateDate() 
 
{

  var date1, date2, date_1, date_2;

  // get date1 value

  date1 = document.getElementById("date1").value;

  if (date1 == "") return;

  // split the values to get the date/month/year

  date1 = date1.split("/");

  //create new date object

  date_1 = new Date();

  // set the date - see ref

  date_1.setFullYear(date1[2],date1[1]-1,date1[0]);
 
  // repeat for date2...

  // get date2 value

  date2 = document.getElementById("date2").value;

  if (date2 == "") return;

  // split the values to get the date/month/year

  date2 = date2.split("/");

  //create new date object

  date_2 = new Date();

  // set the date - see ref

  date_2.setFullYear(date2[2],date2[1]-1,date2[0]);
 
  //...

  // now compare  

  if ( date_1 > date_2 ) 
 
  {

    alert ("Stop");

  }
 
  else 
 
  {

      window.location.href = 'index.htm?date_1=' + encodeURIComponent(date1.join("/")) + '&date_2=' + encodeURIComponent(date2.join("/"));      
 
 }

}

Apr 28 '08 #18

Mike1961

Try this....

http://www11.asphost4free.com/Miguel61/

Apr 28 '08 #19

acoder

16,027

Expert Mod 8TB

Your option values don't match the text for each option, e.g.
[html]<option value="19/07/2007">19/08/2007</option>[/html]

Apr 29 '08 #20

Mike1961

Your option values don't match the text for each option, e.g.
[html]<option value="19/07/2007">19/08/2007</option>[/html]

thanks, I am distracted and a disaster... :-)

Apr 29 '08 #21

acoder

16,027

Expert Mod 8TB

So does that mean it's all working fine now?

Apr 29 '08 #22

Mike1961

So does that mean it's all working fine now?

Yes, your script working well, very well...
thanks !

Apr 29 '08 #23

acoder

16,027

Expert Mod 8TB

You're welcome.

One final point: if you understand the script, you can remove all the extra comments (lines starting with //).

Apr 29 '08 #24

Mike1961

You're welcome.

One final point: if you understand the script, you can remove all the extra comments (lines starting with //).

OK...... !!!
Regards,

Apr 29 '08 #25

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