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JavaScript

Posted by msdsmd sm,dfsadf
msdsmd sm,dfsadf
1,124 Points

Can someone explain to me what switch statement with case = "true" and case="false" means.

```<!DOCTYPE html> <html> <head> <title>Page Title</title> </head> <body> <div style="height:30px;width:30px;border:2px solid red;" role="checkbox" aria-checked="false" tabindex="0">

</div> <script> const div = document.querySelector('div') div.addEventListener('click',function(){ switch(div.getAttribute('aria-checked')){ case 'true': //Can you explain to me what this means case = 'true' div.setAttribute('aria-checked','false') break; case 'false': //Can you explain to me what this means case = 'false' div.setAttribute('aria-checked','true') break; } }) </script> </body> </html>

1 Answer

Michael Kobela
.a{fill-rule:evenodd;}techdegree seal-36
Michael Kobela
Full Stack JavaScript Techdegree Graduate 19,570 Points

Reformatted code:

div.addEventListener('click', function () { 
  switch (div.getAttribute('aria-checked')) {
     case 'true': 
        div.setAttribute('aria-checked','false')
         break; 
     case 'false': 
         div.setAttribute('aria-checked','true') 
       break;
   }
});

This switch statement checks the value of div.getAttribute('aria-checked'), if the value is true, it will execute the code with the case 'true', div.setAttribute('aria-checked','false'). Otherwise it will execute the code within the case 'false' div.setAttribute('aria-checked','true') . Essentially alternating the attribute between true and false.