Hiding an element if another element is undefined

programming flash
1

Hey all, I have another issue…

Basically I have 14 text boxes, each box draws its content from an external txt file. Next to each text box is a button. I want the button to be either visible=true or visible=false depending on weather or not the text box has content or is “undefined” Here is what I have so far, and it’s not working:

loadText = new LoadVars();
loadText.load(cat1+"_"+cat2+"_"+cat3+"_"+cat4+"_products.txt");
loadText.onLoad = function() {
    product1.text = this.product1;
    product2.text = this.product2;
    product3.text = this.product3;
    product4.text = this.product4;
    product5.text = this.product5;
    product6.text = this.product6;
    product7.text = this.product7;
    product8.text = this.product8;
    product9.text = this.product9;
    product10.text = this.product10;
    product11.text = this.product11;
    product12.text = this.product12;
    product13.text = this.product13;
    product14.text = this.product14;
};
for (x=1, x<14, x++){
  if (this.product+x == undefined) {
     this.send+x+_btn._visible = false;
  } else {
     this.send+x+_btn._visble = true;
  }
}

So as you can see, I would like a FOR loop to just run through the variables and check to see if any of them are undefined. if it is, then make the correct send button invisible.

any ideas?

2

Oh ya, once this is solved, I have basically the same issue in another section. Basically, if an image is undefined, I want the button to be invisible.

3 

for (x=1; x<14; x++){
  if (this["product"+x] == undefined) {
     this["send"+x+"_btn"]._visible = false;
  } else {
     this["send"+x+"_btn"]._visible = true;
  }
}
4

hmm, I just tried that, and I got some errors:


**Error** Symbol=slider, layer=Layer 3, frame=1:Line 19: ';' expected
     for (x=1, x<14, x++){

**Error** Symbol=slider, layer=Layer 3, frame=1:Line 20: ';' expected
       if (this["product"+x] == undefined) {

**Error** Symbol=slider, layer=Layer 3, frame=1:Line 22: 'else' encountered without matching 'if'
       } else {

**Error** Symbol=slider, layer=Layer 3, frame=1:Line 25: Unexpected '}' encountered
     }

Total ActionScript Errors: 4      Reported Errors: 4

any ideas?

5

no you tried the wrong thing…note the error for (x=1, x<14, x++){

it should be for (x=1**[COLOR=“Red”];[/COLOR]** x<14**[COLOR=“Red”];[/COLOR]** x++){

recopy the AS i posted above…

6

well, that stopped the errors, but the script isn’t working correctly.

For testing purposes, I made the product2 variable in the text file undefined.

The flash movie shows “undefined” in the product2 text box… but the send2_btn is still there.

I think I need to also add a line that says “if the product box is undefined, dont show the product box or the send button” like:


if (this["product"+x] == undefined) {
this["product"+x]._visible = false;
this["send"+x+"_btn"]._visible = false;
}

but that doesn’t work either… ugh… what am I doing wrong?

7

so I thought that maybe I needed to define another variable in the loop for it to work… but its still not working correctly. Basically the loop is either making everything invisible, or everything visible. I can’t get it to find the undefined element and hide only the correct objects.


for (x=1; x<14; x++){
    var definer = this["product"+x].text;
if (definer == undefined) {
    this["product"+x]._visible = false;
    this["send"+x+"_btn"]._visible = false;
    } else {
        this["product"+x]._visible = true;
        this["send"+x+"_btn"]._visible = true;
    }
}
8 
var loadText:LoadVars = new LoadVars();
loadText.load(cat1 + "_" + cat2 + "_" + cat3 + "_" + cat4 + "_products.txt");
loadText.onLoad = mx.utils.Delegate.create(this, function () {
 for (var x:Number = 1; x < 14; x++) {
  this["product" + x].text = this.loadText["product" + x];
  if (this.loadText["product" + x] == undefined) {
   this["send" + x + "_btn"]._visible = false;
  } else {
   this["send" + x + "_btn"]._visible = true;
  }
 }
});

Should work if you are using AS2 :slight_smile:

9

Excellent! That worked well! I just had to add a " this[“product” + x].text = " “;” so the “undefined” wouldn’t display.

Thanks a lot!