React Native/Javascript - How to know that object does not have the property?

Let say :

myVariable.color;
myVariable.height;

myVariable.width;

But sometimes, myVariable only have "color" and "height" property.

I have try this, but no luck :

if(myVariable.width == undefined) {
//but not filtered here
}

How to know if myVariable doesn't contain "width" property by code, is it possible ?

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