Dots vs Brackets notation

Glamorous Goshawk answered on August 18, 2022 Popularity 2/10 Helpfulness 1/10

answer Dots vs Brackets notation

Dots vs Brackets notation

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//Dot notation - get a property from object
console.log(ioseb.lastName);

//Brackets notation - get property from object
console.log(ioseb["lastName"]);

//in Brackets notation we can put any EXPRESSION
const nameKey = "Name";
console.log(ioseb["first" + nameKey]);
console.log(ioseb["last" + nameKey]);

//In Dot notation we should use actual property name not computed.
//We get UNDEFINED message in the console 
//when we try to access to a property which does not exist.

//Add new properties to object

//dot notation
ioseb.location = "Georgia";

//brackets notation
ioseb["youtube"] = "thereisnospoon.";
console.log(ioseb);

Popularity 2/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: brackets javascript notation

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Contributed on Aug 18 2022

Glamorous Goshawk

0 Answers Avg Quality 2/10

Dots vs Brackets notation

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