How to fix error: expected ;

[Aldrin25160823aai2]

Hello! So I have been following this tutorial below to try to make my own ranking system in AE:

https://youtu.be/STw_ZIw3uVE 

I've followed the tutorial step by step when typing the code but then I came into this issue below which puzzles me since I have already placed the semicolon in that line.

Anyone know what I can do this fix this? Cheers!!

[Aldrin25160823aai2]

Just in case anyone wants to see the entire code, here it is!: 

pi = 0;
dt = effect("RankTransTime ")("Slider");
sTime = Math.floor(time/dt)*dt;
z = [0, 0, 0, 0, 0];
if (time - sTime < 0.1){
    n = effect("n")("Slider");
    if (Math.floor(n/5) >= pi){
        let r = [];
        for (i=1, i <= n; i ++){
            ssTime = thisComp.layer(i).masterProperty("Slider").valueAtTime(sTime);
            if (ssTime == 0) ssTime = (n-1)/1000;
            let obj = {t: ssTime, id: i}
            r[i-1] = Object.assign({}, obj);
        }
    r.sort(function(a,b){return b.t - a.t});
    for (i = 1; i <= 5, i++){
        z[i-1] = r.findIndex(function (a){return a.id == i + (pi*5)}/20;
    }
    }
}

[Dan Ebberts]

My guess is that you're using the Legacy ExtendScript expression engine instead of the JavaScript engine. Change that in File > Project Settings > Expressions.

[Aldrin25160823aai2]

Oh the codes before did not work until I changed it to the Legacy Extendscript engine before though. Will changing it back affect the previous codes?

[Dan Ebberts]

Possibly--it depends on the code. There are some differences, so you may have to edit your code to get it to run on one engine or the other. 

[Aldrin25160823aai2]

I changed it back to JavaScript and line 1 had the error: 

"SyntaxError: Unexpected token)

[Dan Ebberts]

Hard to say for sure without setting everything up the way the tutorial has it, but I do see several syntax errors in your code.

for (i=1, i <= n; i ++){

should be:

for (i=1; i <= n; i ++){

for (i = 1; i <= 5, i++){

should be:

for (i = 1; i <= 5; i++){

and

z[i-1] = r.findIndex(function (a){return a.id == i + (pi*5)}/20;

should be:

z[i-1] = r.findIndex(function (a){return a.id == i + (pi*5)})/20;

But this code definitely needs the JavaScript engine, because it's using array.sort()

[Mylenium]

Object.assign({}, obj)

It probably should read object.assign. Case-sensitivity matters in JS...

Mylenium

[Aldrin25160823aai2]

I'll give it a shot but iirc, the error message popped up before I even typed in that line 😕