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Jun 25th, 2018
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  1. let obj={ n:1, j:'test' };
  2. obj[j] = 'new val' ;
  3. let { j } = obj;
  4. alert(j);//'test'
  5.  
  6. obj.j = 'new val'
  7. obj['j'] = 'new val'
  8.  
  9. let obj={ n:1, j:'test' };
  10. obj.j = 'new val' ;
  11. let { j } = obj;
  12. alert(j);//'test'
  13.  
  14. let obj={ n:1, j:'test' };
  15. let foo = 'j'
  16. obj[foo] = 'new val' ;
  17. let { j } = obj;
  18. alert(j);//'test'
  19.  
  20. let obj={ n:1, j:'test' };
  21. obj['j'] = 'new val' ;
  22. alert(obj);//'test'
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