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- let obj={ n:1, j:'test' };
- obj[j] = 'new val' ;
- let { j } = obj;
- alert(j);//'test'
- obj.j = 'new val'
- obj['j'] = 'new val'
- let obj={ n:1, j:'test' };
- obj.j = 'new val' ;
- let { j } = obj;
- alert(j);//'test'
- let obj={ n:1, j:'test' };
- let foo = 'j'
- obj[foo] = 'new val' ;
- let { j } = obj;
- alert(j);//'test'
- let obj={ n:1, j:'test' };
- obj['j'] = 'new val' ;
- alert(obj);//'test'
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