Answer 1

Line 2, constructors in JavaScript are not like constructors in languages like Java or C# or C++ in the sense that to define a constructor you don't use the class name. Instead, you need to use the keyword `constructor`, like so

constructor(name) {
this.name = name
}

Then on line 12, you are specifying the type name of `obj`. This is not valid in JavaScript. Use the keyword `var` or `let` or `const`.
let obj = new Person("Malick")
obj.eat("yassa")

See the module on classes in SoloLearn
https://www.sololearn.com/learning/2979/