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jQuery onchange select option

Asked 2011-10-18T11:59:02.313
11

Let's say I have this HTML:

<select id='list'>
    <option value='1'>First</option>
    <option value='2'>Second</option>
    <option value='3'>Third </option>
</select> 
<input type ="text" id="text"/>

and then this JavaScript

 //other variables are also declared here
    var x1 = 5;
    var x2 = 10;
    var value = x1 * x2;
    var list_value =$("#list").change(function() {
             $(this).val();
 // just an example of how i want the function in the variable 
    });
    var nwval = value * list_value;
      $('#text').val(nwval);
// some long piece of code 
// i'm also using the list_value value somewhere in the long piece of code..

I want the val in the textbox to change as the user selects an option, I know it'll work if I wrap the change event around it, but is there any way to go about this while keeping it as that variable list_value?

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1 Answer

1

Wrapping the change event is the better way as it creates a closure, you could use global variables as below, but you would be better (imho) to simply grab the value again futher down.

You could technically do (although a bad idea as it is global variables):

var x1 = 5;
var x2 = 10;
var value = x1 * x2;
var list_value = 1;
$("#list").change(function() {
    list_value = $(this).val();
    var nwval = value * list_value;
    $('#text').val(nwval); 
});
answered 2011-10-18T12:03:53.713

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