How to take variables by mask localstorage?

Question

JavaScript

I have localstorage variables with keys like TODAY_09022018, TODAY_09022019, TODAY_09022020....
How can I take them into the foreach loop using the TODAY_ mask?

Answer 1

for (var key in localStorage){
   // сравниваешь key по маске, получаешь getItem нужные.
}

Answer 2

for(x in localStorage){
   if(x.indexOf("TODAY_")==0){
      console.log(localStorage[x])
   }
}