Explain different between return, break and continue keyword in Javascript

var i = 10;
switch(i) {
  case 10:
      // code block
    break; case 9:
    // code block
    break; default:
    // code block
} 

for(var i = 0; i<=100; i++){
   if(i % 8 == 0){
       break; // stop loop and read commands below loop 
    }
} 
// Some code here

 string text = "";
for(var i = 0; i<=100; i++){
   if(i % 5 == 0){
       continue; // stop curent step loop and start next step of loop
    }
   text = text  +  i + " ";
} 
alert(text); 

function(a, b){
   if(a > b){
     return a + b;
   }
   return a *b;
}