Switch statement

You have a global variable called 'x' and also a local variable called 'x'. The two are not the same. When your msg_int function is called, 'x' will always be the value sent in the inlet, therefore the only two possible results are that if you send it 2, then 'case 2:' will be executed, otherwise nothing will be executed.

Use a different variable name for the global x or the local x.

Sorry for my dumbness . I tried different possibilities and it didn't work . Could you show me on example. Thanks

// inlets and outlets
inlets = 1;

outlets = 1;

// global variables
var x =0;

function msg_int (x)
{

var i ;
i=x;
y= i>2;
z=i

switch (i)

{
case 2:
outlet(0,1);
post(1);
post();
break;

case y:
outlet(0,2);
post(2)
post();
break;

case z:
outlet(0,3);
post(3);
post();
break;

}

}

I think you are probably better of with a plain old if...else, if I got the idea right I think this will do what you want.

// inlets and outlets
inlets = 1;
outlets = 1;

function msg_int(i)
 {

    if(i > 2){
        outlet(0, 2);
        post(2)
        post();
    }
    else if (i < 2){
        outlet(0, 3);
        post(3);
        post();
    }
    else{
        outlet(0, 1);
        post(1);
        post();
    };
}

Yes with "else" and "if" I tried before and it is easier , but now i try to understand how "switch" works.

Basically If I send an int number to js if this number is 2 i want to receive via outlet the number 1, if the number is bigger than 2 i want 2, if is less i want 3.

thanks for the response

If you use switch the case needs to be something specific rather than a condition. In this instance you could either use if...else or some maths on the conditions themselves. To be honest the method below is messy and might be hard to figure out if you return to the code in the future, but it does work.

lh

outlet(0, (x==2) + (x>2)*2 + (x

merci bechamel and all javascript folks, It works very well,

I tried to learn the loop statment .

The patch is

i use this java script

// inlets and outlets
inlets = 1;

outlets = 1;

// global variables
var x = 1

function msg_int (x)
{

var i;
if (x ===2){i=k;}

for (var k=1; k
{
outlet(0, k);

}

//............................

Strange , I will obtain the loop for every value of x and not just when x = 2. If i want that I must put another two condition

// inlets and outlets
inlets = 1;

outlets = 1;

// global variables
var x = 1

function msg_int (x)
{

var i;
if (x ===2){i=k;}

// ANOTHER TWO CONDITIONS
if(x>2){i= z;}
if(x

for (var k=1; k
{
outlet(0, k);

}

//............................

I don't understand why is not enough

if (x ===2){i=k;}

Thanks for the answer

You are trying to set the variable i to be the value of variable k which isn't set to anything yet, it is "undefined". This will have no effect on the code below. If you want to loop only when the input is equal to 2 then put the for loop in the block following the if statement. Have a look at the javascript reference here for loads more information, it can be really helpful.

lh

function msg_int(x) {
    if (x==2) {
        for (var k=1; k

Hey,

There are a few problems with your code...

The first is, as Luke wrote, that you are assigning the undefined value of k to i, which is almost definitely not what you want.

The second problem is that if you want the loop to only execute if x==2, the loop itself must be inside the {} following the if statement.

The reason adding the two additional conditions seemed to fix your problem is that you introduced an error. When x isn't 2, it tries to do "x = z". Since there is no z, the code stops and prints an error (look in your Max window). It never gets to the loop. When x is 2, this error doesn't happen, and the loop executes.

The last problem isn't really a problem, but is kind of strange. In what you posted, x===2 will work, but there are very few instances where it's what you really want. I suggest you stick to == unless you have a specific reason why you want ===.

The code Luke posted is probably the "normal" way to do what you want, but the reason adding the other 2 if statements "fixed" it is subtle and I thought you could do with an explanation.

/brian