that's a little bit over my head (beginner : /)
what's a switch-case statement?
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shorcut for the if else statement
is there a shortcut for writting an if else statement?
ex. I know this is ashortcut for the if statement w/ : as the else - i.e. (browserName == "Netscape" && browserVer == 5) ? document.write("This is Netscape 6") : document.write("This is NOT Netscape 6") )
but what would be a shortcut for this?
var browser;
if (browserName == "Netscape" && browserVer == 5) {
browser = "nn6"; }
else if (browserName == "Netscape" && browserVer == 4){
browser = "nn4";}
Thanks!!
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Answers
You can nest your ? : statements.
For example:
document.write(x == 6 ? "1" : x == 5 ? "2" : "3");
This is the same as:
if(x == 6) {
document.write("1");
}
else if (x == 5) {
document.write("2");
}
else {
document.write("3");
}
Only problem is that you always have to have a final ":", meaning this would give you an error:
document.write(x == 6 ? "1" : x == 5 ? "2");
Because (x == 5 ? "2") does not have an else (":") part.
-Xdoc
If by shortcut you mean a one line code, yes there is. The important thing with the (condition) ? : ; if else statement is that it needs to have something after the : to work. For example something like this works:
(2 == 3) ? alert('No') : ((2 == 2) ? alert('Yes'): 0);
This is similar to:
if (2 == 3) {
alert ('No')
} else if (2 ==2) {
alert ('Yes')
}
The '0' after the last ':' is just there to avoid errors. So your example could be rewritten like this.
var browser;
(browserName == "Netscape" && browserVer == 5) ? browser = "nn6" : ((browserName == "Netscape" && browserVer == 4) ? browser = "nn4" : 0);
This question has been abandoned. I will make a recommendation to the
moderators on its resolution in a week or two. I appreciate any comments
that would help me to make a recommendation.
<note>
In the absence of responses, I may recommend DELETE unless it is clear
to me that it has value as a PAQ. Silence = you don't care
</note>
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by: weaponXPosted on 2002-12-27 at 12:33:30ID: 7637336
yes there is...how short I can't say for sure
set a new variable bType to take in the browserName and ver
then run a switch/case statement to handle the input.
like...
<script language="JavaScript1.2">
var browser
switch(browser)
{
case (browser="nn6"):
window.location="nn6.htm"
break
case (browser="nn4"):
window.location="nn4.htm"
break
</script>
I hope this helps you!