Question

I have a a drop down filed like below.

HTML and PHP

 <select id="selectform_0">
    <option value="0">1</option>
    <option value="1">2</option>
    <option value="2">3</option>
    <option value="3">4</option>
    <option value="4">5</option>
    </select>


<input type="button" onclick="selectValue(<?php echo $id; ?>)
">

And Javascript

<script>
function selectValue(id)
{
  //take select value
  alert(selectvalue);
}
</script>

is there anyway to take value from it by javascript strictly by not using <form>

Answer 1

Try this

Javascript

<script>
function selectValue(id)
{ 
var obj = document.getElementById("selectform_"+id).options[document.getElementById("selectform_"+id).selectedIndex].value;
alert(obj);
}
</script>

HTML

<select id="selectform_0">     
<option value="0">1</option>     
<option value="1">2</option>     
<option value="2">3</option>     
<option value="3">4</option>     
<option value="4">5</option>     
</select> 

<input type="button" onclick="selectValue(<?php echo $id; ?>) ">