javascript - if variable contains

I
have a postcode variable and want to use JS to add a location into a different variable
when the postcode is changed/entered. So for example if ST6 is entered I would want
Stoke North to be entered.

I somehow
need to do an if statement to run through
e.g.

if(code contains
            ST1)
{
 location = stoke central;
}
else if(code
            contains ST2)
{
 location = stoke north;
}
            

etc...

How
would I go about this? It's not checking if 'code' equals a value but if it contains a
value, I think this is my problem.

class="post-text" itemprop="text">

class="normal">Answer

You might
want
indexOf

if
            (code.indexOf("ST1") >= 0) { ... }
else if (code.indexOf("ST2") >= 0) {
            ... }

It
checks if contains is anywhere in the
string variable code. This requires
code to be a string. If you want this solution to be
case-insensitive you have to change the case to all the same with either
String.toLowerCase() or
String.toUpperCase().

You
could also work with a switch statement
like

switch (true) {

            case (code.indexOf('ST1') >= 0):
 document.write('code contains
            "ST1"');
 break;

 case (code.indexOf('ST2') >=
            0):
 document.write('code contains "ST2"'); 
 break; 

            case (code.indexOf('ST3') >= 0):
 document.write('code contains
            "ST3"');
 break; 
 }​