Solution:You can loop back the object, get the value corresponding to each key in the object, and then put the value into an array you define.
For example:
tipAttr: any = []; $.each(, function(key, val) { (val); (val); return ; });
The above solution for *ngFor cannot loop the returned objects in angular4 is all the content I have shared with you. I hope you can give you a reference and I hope you can support me more.