Logical Assignment Operator

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ES2021 Logical Assignment Operator 🧵 We all have heard and read about the logical Operator but JavaScript in the 2021 version has a new operator called Logical Assignment Operator.

→ 3 new operators are: Logical OR assignment operator ( ||= ) Logical AND assignment operator ( &&=) Nullish Coalescing assignment operator (??=)

→ Logical OR assignment operator ( ||= ) Syntax: x ||= y, another way to represent x || (x = y) Explain: If x is falsy then value of x will be y

Example: let myName; myName ||= "Vansh" Explain: If myName is falsy then myName will be assigned value "Vansh". Here myName is falsy therefore myName = "Vansh"

→ Logical AND Assignment Operator ( &&= ) Syntax: x &&= y, another way to represent x && (x = y) Explain: If x is truthy then value of x will be y

Example: let lastName = "Sharma"; lastName &&= "Bhardwaj" Explain: If lastName is truthy then lastName will be assigned the value "Bhardwaj". Here lastName is truthy therefore lastName = "Bhardwaj"

→ Nullish Coalescing assignment operator (??=) Syntax: x ??= y, another way to represent x ?? (x = y) Explain: If x is null and undefined then the value of x will be y

Example : let city=null; city ??= 'Delhi'; Explain: Here city is null therefore nullish coalescing operator will assign Delhi to the city.

Do ♻️ and ❤️ the tweet Reference: javascripttutorial.net/es-next/javascript-logical-assignment-operators/ Demo Code: stackblitz.com/edit/js-vsqktw?file=index.js