Check if a property is in an object - Beau teaches JavaScript

How do you check if a property is in an object in JavaScript? Learn three ways in this video. Two of the ways are ‘in’ and ‘hasOwnProperty’.

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[JohnnieDoe]

Exactly the video I was looking for. Very concise - thank you Beau!

[agnavamandal]

Sir free code camp is down.
Any idea when it will be up?

[jenjapa]

thanks, very simple and short.

why you are not allow translate subtitles to other language?

[nazarkyal]

Hey Beau! How to use "Call, Apply and Bind in JS" ? Make a video pls. Thanx!

[PRATIK]

Can I check for multiple properties in a single line of code, bypassing them as multiple arguments?

e.g :
scores= {
'andy': 8,
'boris' : 9,
'chris' : 6
}


console.log( scores.hasOwnProperty('boris', 'andy') );

[tazzadk]

Are you the fastest typer in the word || do you speed up the video when you type

[oufcena]

Better way
const obj = {
name: 'Beau'
};

console.log( Boolean(obj.name); ); // prints true

[recepgumus]

language_id = this.form?.language_id?.value ?? undefined