Angular2 private variable not updated in ngOnChanges()

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I have a strange problem I am not able to solve for several hours.

In my component I have:

@Input() content : string;

private contentPreview : any;

ngOnChanges(changes: SimpleChanges)  {
    this.contentPreview = changes['content'].currentValue;
    console.log(changes['content'].currentValue);   // <-- WORKS
}

The variable this.contentPreview is not changed. If I try displaying it, it remains undefined. Even if I try this.contentPreview = "X"; it keeps undefined everywhere else in the component.

Am I missing something, or is it a bug?

asked 25 secs ago

Peter Matisko

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Angular2 private variable not updated in ngOnChanges()