5 New JavaScript Features in ES 2020 – Brain Mentors

In this Blog we are going to learn ES 2020 Key Features.ES2020 released on Start of this year.rnHere we are going to learn some really cool features of ES 2020 Let’s start with Feature 1 : Nullish coalescingrnUse when the value is missing (undefined or null (It doesn’t work with NaN , ‘’, 0)).rnThe undefined and null are the nullish value , and you want to handle it then we use nullish coalescing operator.rnExample:rnimagernIn above example , country is not there so it does show undefined And I want to print some meaningful resultrnBefore ES 2020 we use truthy and falsyrnimagernIt just checks if the first value is true then don’t go to the second value ,rnif first is false (undefined or null ) then go to the second value.rnInstead of PIPE Now Use Nullish Operator from ES 2020rnimage Feature 2 : Optional Chaining OperatorrnNested Object Property access can be dangerous , if any of the property is null or undefined.rnExample :rnimage rnRead Full Article Here – https://brain-mentors.com/5-new-javascript-features-in-es-2020-brain-mentors/