Can I use for loops inside switch{} ??

**shachi** · 09-20-2006, 06:31 PM

I think that my title says it all. Well, if you don't get what I mean here's what I mean. Can I use for loops in switch statements like this:

Code:

switch(somevariable){
for(var i=0;i<somevalue;i++;j=10;j<someothervalue;j++){
case i:
alert(somearray[j]);
break;
}
}

Thank you for your precious time reading my post.

**Twey** · 09-20-2006, 07:01 PM

Not like that, no. The question arises, of course, of why you'd want to. The example you've given can be accomplished with:

Code:

for(var i = 0; i < somevalue; ++i)
  if(somearray[i + 10])
    alert(somearray[i + 10]);

**shachi** · 09-23-2006, 05:23 PM

Thanks Twey, but how do I use that inside a switch statement??

**Twey** · 09-23-2006, 10:35 PM

Why would you want to? The loop I provided duplicates the functionality of what you're trying to do with the pseudo-Javascript above. If you tell us what you're trying to do, we can think of a better way to do it.

**shachi** · 09-24-2006, 12:10 PM

I am trying to make a 12 hour clock(maybe there are other easier ways but I want it this way).

Code:

d = new Date();
hours = d.getHours();
minutes = d.getMinutes();
seconds = d.getSeconds();
switch(hours){
for(var i=12;i<24;i++;var j=1;j<12;j++){
case i:
hours = j;
break;
}
}
document.getElementById("somediv").innerHTML = hours + minutes + seconds;
setTimeout("somefunc()",1000);

**blm126** · 09-24-2006, 12:57 PM

Code:

window.onload = startClock;
function startClock(){
setClock();
setInterval("setClock()",1000);
}
function setClock(){
var d = new Date();;
var hours = check(d.getHours());
var minutes = check(d.getMinutes());
var seconds = check(d.getSeconds());
document.getElementById('clock').innerHTML = hours+':'+minutes+':'+seconds
}
function check(num){
if(num<10){
num = '0'+num;
}
return num;
}

Quick javascript clock for you

**Twey** · 09-24-2006, 03:15 PM

Code:

window.onload = function() {
  var a = function(n) {
    return (n.toString().length < 2 ? "0" + n : n);
  };
  var f = function() {
    var d = new Date();
    window.document.getElementById("clock").firstChild.nodeValue = a(d.getHours()) + ':' + a(d.getMinutes()) + ':' + a(d.getSeconds());
  };
  f();
  window.setInterval(f, 1000);
};