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How to write a ‘select case’ with one ‘case’ set to different values

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Aug 24.2004

Which is the correct way to write it?

The idea would be: (in bold)

[code]
 function checkLogo() {
var cert_A = document.form_newOffer.certAut.Value;

switch(cert_A) {

[B]case “1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or15 or 16 or 17”:[/B]

if (…) {

} else {
… }
break;

[B]case “18 or 19 or 20 or 21 or 22”:[/B]

if…
[/code]

Or maybe it is better to use something like this:

[code]
function checkLogo() {
var cert_A = document.form_newOffer.certAut.Value;

[B]if (cert_A == 18 or 19 or 20 or 21 or 22)[/B] {
…
} else {… }
[/code]

How can I do it?

Thank you,
Cesar

to post a comment
JavaScript

6 Comments(s) ↴

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@gil_davisAug 24.2004 — If you only have two conditions, I would use the "if" statement.

Here is an interesting twist on the switch/case for more flexibility:
<i>
</i>switch(true) {
case (cert_A &lt;= 17):
//
break;
case ((cert_A &gt;= 18) &amp;&amp; (cert_A &lt;= 22)):
//
break;
default:
//
}
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@BillyRayAug 24.2004 — Either way, you would not use "or" - you would use "||".

Dan
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@erick30authorAug 24.2004 — Hi Gil, your code works fine ?:

<i>
</i>switch(true) {
case (cert_A &lt;= 17) &amp;&amp; (cert_A != 0):
//
break;
case ((cert_A &gt;= 18) &amp;&amp; (cert_A &lt;= 22)):
//
break;
default:
//
}

But I have tried it with an "if" statement and it doesn' t work:

<i>
</i>if (cert_A != 0) {

if (cert_A &lt;= 7) {
...
} else {
if ((cert_A &gt;= 18) &amp;&amp; (cert_A &lt;= 22)) {
.... }
}

} else {
... }



What is wrong?
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@steelersfan88Aug 24.2004 — // Try:
if ((cert_A &lt;= 7) &amp;&amp; (cert_A &gt; 0)) {
// number is 1,2,3,4,5,6,7
}
else if ((cert_A &gt;= 18) &amp;&amp; (cert_A &lt;= 22)) {
// number is 18,19,20,21,22
}
else {
// all other numbers
}Your if statement was a little confusing ...
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@erick30authorAug 24.2004 — If I need to use 'else if' perhaps it is better to use 'Select Case'
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@steelersfan88Aug 24.2004 — Switch ... Case should only be used when you have a group of several equality situations as a list. In other words, never use switch/case when you are using [part-]inequality operations. Never use switch case when you have more than when comparison.

In this case, I believe the if ... then is the best option. I will give my advice > never use switch case. You'll always be safer, and more understanding use if statements. Others will tell you dif't.
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