In nodejs I was creating a list of objects with each object supposed to have a string key and a number as value. I am able to create this without issues but while trying to log this with console.log() . I could see some keys did not have a single quotes surrounding the key while some did.
eg
[
{ '2d22f294': 0 },
{ b6d108da: 0 },
{ b17562ff: 0 },
{ '0e4a0beb': 0 }
]
Could anyone explain what does it mean to have a single quotes surrounding the key , I was of the assumption this meant the key was a string but even the ones without single quotes around the keys are strings and act like strings.
If it's starts with a number, then printing must show you valid javascript and quotes tell you that the key is a string (not a number).
If you have an object like this
let object = {
name: 'Jim',
25: 'Age'
}
You can access the properties in the following way:
for the namekey ... object.name or object['name'].
for the key 25 ... object[25] or object['25']
This is because properties cannot start with a number in js. Therefore you have to access them with brackets.