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Valid & Invalid identifiers in Dot property access

Homeless Hedgehog answered on September 29, 2022 Popularity 1/10 Helpfulness 1/10

answer Valid & Invalid identifiers in Dot property access

Valid & Invalid identifiers in Dot property access

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const myObject = {
   "title": "Debug",
   "$title": "Debug",
   "_title": "Debug",
   "title9": "Debug",
   "title.name": "Debug",
   "title-name": "Debug",
   "5title": "Debug",
}
//valid identifiers
console.log(myObject.title); //Debug
console.log(myObject.$title); //Debug
console.log(myObject._title); //Debug
console.log(myObject.title9); //Debug

//not valid identifiers
console.log(myObject.title.name); //undefined
console.log(myObject.title-name); //NaN
console.log(myObject.5title); // throws SyntaxError: Unexpected number

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: blog.debugeverything.com

Tags: dot javascript

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