title: React-Native How to use a Boolean
body: <p>I don't know how to work with a Boolean in React-Native.</p>
  
  <p>I tried to find a solution on google but apparently my question is so simple that no-one has asked it.</p>
  
  <p><strong>Whereat my code do I have to declare the boolean?<br>
  How can I change the value?</strong></p>
  
  <p>What is the right way to compare it? (I think if(myBoolean===true) but I am not completely sure.)</p>