Weird console behavior with iterators

GoJS
1

If you go to the basic example page and open the devtool and type out this snippet:

window.go.Diagram.fromDiv('myDiagramDiv').nodes
  .filter(n => n.findNodesInto().count === 0)
  .each(n => console.log(n));

You WON’T see any console logs. But if you change it to this:

window.go.Diagram.fromDiv('myDiagramDiv').nodes
  .filter(n => n.findNodesInto().count === 0)
  .each(n => console.log('::', n));
//                       ^ Note here

Then you’ll get the followings:

:: Node {n: 12582915, qu: null, Wu: 0, Bo: 0, f: GraphObjectTemplateSettings, …}
:: Group {n: 12582915, qu: null, Wu: 0, Bo: 0, f: GraphObjectTemplateSettings, …}

Why is that?

2

I just did a verbatim copy and paste of your first code into the console for that Basic sample:

It printed out:

Object { n: 12582915, qu: null, Wu: 0, Bo: 0, f: {…}, nh: null, q: null, ct: {…}, ee: {…}, Wt: 1, … }
debugger eval code:3:22
Object { n: 12582915, qu: null, Wu: 0, Bo: 0, f: {…}, nh: null, q: null, ct: {…}, ee: {…}, Wt: 1, … }
debugger eval code:3:22

But I normally use Firefox, so I tried Chrome, with a result as I think you would expect:

Node {n: 12582915, qu: null, Wu: 0, Bo: 0, f: GraphObjectTemplateSettings, …} VM14:3
Group {n: 12582915, qu: null, Wu: 0, Bo: 0, f: GraphObjectTemplateSettings, …}

So I cannot explain the behavior that you see.

3

Thanks, it’s really strange.