adding to a state array with js. hangs at push command

[pchanley]

I am trying to add to an array of changed entries. I have created an entry. and then use the following to update the state array to hold all change entries. It seems to stop processing at the push entry. not sure why
Here is update state script:

var currentChange = $("State.progressCurrentChange");
var currentList = $("State.progressChanges");
if(currentChange["courseName"] !== undefined){
currentList.push(currentChange);
}
console.log(currentList)
return currentList;

yhsnkd

[mikesealey]

Hey @pchanley are you able to provide some more information or (even better) an app export? I don't think there's enough to go on here to be able to recreate the issue.

[pchanley]

this is a simpler example. I am trying to update a State defined array - progressCurrentChange
as you can see from the console everything runs till the push command.

js:
var currentChange = $("State.progressCurrentChange");
console.log(currentChange);
var currentList = $("State.progressChanges");
console.log(currentList);
if(currentChange["courseName"] !== undefined){
console.log("prepush");
currentList.push(currentChange);
console.log("postpush");
}
console.log("state 2");
console.log(currentList)
return currentList;

console messages:
{courseName: 'Building Blocks 1', sectionName: 'Section 1', lessonName: '', unlocked: true, finished: false, …}
VM7592:12 []
VM7592:14 prepush

It seems to stop processing at the push command?

[pchanley]

this is a simpler example. I am trying to update a State defined array - progressCurrentChange
as you can see from the console everything runs till the push command.

js:
var currentChange = $("State.progressCurrentChange");
console.log(currentChange);
var currentList = $("State.progressChanges");
console.log(currentList);
if(currentChange["courseName"] !== undefined){
console.log("prepush");
currentList.push(currentChange);
console.log("postpush");
}
console.log("state 2");
console.log(currentList)
return currentList;

console messages:
{courseName: 'Building Blocks 1', sectionName: 'Section 1', lessonName: '', unlocked: true, finished: false, …}
VM7592:12 []
VM7592:14 prepush

It seems to stop processing at the push command?

[pchanley]

finally got an error message: TypeError: currentList.push is not a function. the State.progressChanges is an array as shown in the console.log?

[mikesealey]

Hi Peter, I'm not at my desk today but something occurred to me that might help get you going again and I thought you might appreciate not having to wait until Monday

I think variables stored in state and handled as strings. I'm not 100% sure, but you can check by using a Show Notification step to display return typeof $("state.your_variable_here") or even return Areay.isArray($("state.your_variable_here"))

You may need some JS methods to make that state-variable back into an Array, JSON.parse($("state.your_variable_here")) might work, but I'm on mobile here so I can't test it for you.