Question

Javascript And Select/Option tag

Asked by: ezicoder

How to dinamicaly fill <select> tag with javascript.

eg.:
I have two buttons:
"Audi"   "BMW"
and "Submit"

When I click "Audi" select tag should include:
<select name='cars'>              
  <option  value='1'>A6</option>
  <option  value='2'>A4</option>
  <option  value='3'>A4</option>
</select>

And when I click "BMW" select tag should include:
<select name='cars'>              
  <option  value='4'>316</option>
  <option  value='5'>320</option>
</select>


It should be something like this:
document.form1.cars.select.option[0].value='1';
document.form1.cars.select.option[0].innerText='A6';

and so on...

Please help...

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Asked On
2003-07-14 at 08:31:14ID20677901
Tags

option

Topic

JavaScript

Participating Experts
1
Points
250
Comments
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Answers

 

by: knightEknightPosted on 2003-07-14 at 08:34:43ID: 8918023

use .text instead of .innerText on OPTIONs.  

Here is an example using cities and states:

<HTML>
<HEAD>
<TITLE>Dynamic SELECTs</title>
<SCRIPT language='JavaScript'>
<!-- //

 // create js arrays to hold the data for selCity

 var aryCityData = new Array();

 aryCityData[0] = new Array();
 aryCityData[0][0] = new Option('Select a State','0');

 aryCityData[1] = new Array();
 aryCityData[1][0] = new Option('Los Angeles','301');
 aryCityData[1][1] = new Option('Oakland','304');
 aryCityData[1][2] = new Option('Rio Linde','305');
 aryCityData[1][3] = new Option('San Diego','302');
 aryCityData[1][4] = new Option('San Fransisco','303');

 aryCityData[2] = new Array();
 aryCityData[2][0] = new Option('Miami','101');
 aryCityData[2][1] = new Option('Orlando','102');
 aryCityData[2][2] = new Option('Tampa','103');

 aryCityData[3] = new Array();
 aryCityData[3][0] = new Option('Abilene','201');
 aryCityData[3][1] = new Option('Austin','202');
 aryCityData[3][2] = new Option('Dallas','203');
 aryCityData[3][3] = new Option('Houston','204');


 function reloadCities(curStateIndex)  // pass in the current State index
 {
    if ( curStateIndex < 0 ) return;  // no state selected, so do nothing

    var aryCityOpts = document.myform.selCity.options;  // points to selCity options array

    aryCityOpts.length=0;  // first, clear the current City options ...

    // then re-load the City options with values for the current State
    for ( var i=0,n=aryCityData[curStateIndex].length; i<n; i++ )
    {
       //// the line below no longer works in IE5 (it works in IE4 and NS4+).
       // aryCityOpts[aryCityOpts.length-1] = new Option(aryCityData[curStateIndex][i].text,aryCityData[curStateIndex][i].value);
       //// therefore, it now takes three lines to do the same thing:

       aryCityOpts.length++;  // add a new Option, then put data in it (below)
       aryCityOpts[aryCityOpts.length-1].text  = aryCityData[curStateIndex][i].text;
       aryCityOpts[aryCityOpts.length-1].value = aryCityData[curStateIndex][i].value;
    }
 }

// -->
</script>

</head>

<BODY onLoad='document.myform.selState.focus();'>
 <FORM name='myform' method='post' action='whatever.asp' onSubmit='return(false);'>

   State: &nbsp;
   <SELECT name='selState' size='1' onChange='reloadCities(this.selectedIndex);'>
     <OPTION value='0'></option>
     <OPTION value='30'>California</option>
     <OPTION value='10'>Florida</option>
     <OPTION value='20'>Texas</option>
   </select><P>

   City: &nbsp; &nbsp;
   <SELECT name='selCity' size='1' onChange='alert(this.options[this.selectedIndex].value)'>
     <OPTION value=''>Select a State</option>
     <OPTION></option>
     <OPTION></option>
     <OPTION></option>
   </select><P>

 </form>
</body>
</html>

 

by: ezicoderPosted on 2003-07-14 at 09:00:42ID: 8918250

Thank you knightEknight.

You are the best:)

20120131-EE-VQP-002

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