Created
October 1, 2020 07:29
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| let book = { | |
| name: "Harry Potter 1", | |
| price: { | |
| value: 50, | |
| currency: "EUR" | |
| }, | |
| ISBN: "978-7-7058-9615-2", | |
| weight: { | |
| version1: { | |
| value: 550, | |
| unit: 'g' | |
| }, | |
| version2: { | |
| value: 690, | |
| unit: 'g' | |
| } | |
| } | |
| } | |
| //Do something with book.weight.version2.value | |
| console.log(book?.weight?.version2?.value); | |
| //690 | |
| console.log(book?.weight?.version3?.value); | |
| //undefined |
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