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JavaScript Object-Oriented JavaScript Object Basics Filling Out the Play Method

Posted by thomas shellberg
thomas shellberg
11,594 Points

No support for "yoda" expressions?

Coming from a WordPress background the coding standards prefers a "yoda" expression approach, meaning that the value you're looking for is written first and then the operator. This didn't pass in the challenge:

const player1 = {
    name: 'Ashley',
    color: 'purple',
    isTurn: true,
    play: function(){
        if ( true === this.isTurn ) {}
    }
}

1 Answer

Brendan Whiting
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.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,736 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,736 Points

Yeah, I guess they're picky. What about just the property itself, since it is boolean already?:

const player1 = {
    name: 'Ashley',
    color: 'purple',
    isTurn: true,
    play: function(){
        // write code here.
      if (this.isTurn) {}
    }
}
thomas shellberg
thomas shellberg
11,594 Points

Because JS is a weak-type language, if the isTurn property is somehow converted to a string or integer or something by a piece of code, almost any string or integer value would evaluate to "true" in your example, right?

It would be better to check that it is for certain a boolean value of true.

Brendan Whiting
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,736 Points
Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,736 Points

Hmm. My feeling is that's erring on the side of being a bit too careful at the expense of making the code more bloated. Using boolean variables by themselves in this kind of situation is pretty common. If you want strong typing, TypeScript is awesome.