//While Loop
/*
Syntax
while(condition){
  statment ;
}
*/

 var i=0;
 while(i<=10){
   console.log(i);
   i++
 }


 function generateYears(start,end){
   var years =start;
   document.write("<select>");
   while(years <= end){
     document.write("<option value= \"" +years+"\">" + years +"</option>");
     years++;
   }
   document.write("</select>");
 }
 generateYears(1900,2018);


 //DO WHILE
 /* SYNTAX
 do{

 statment;

 }while(condition)
 */

 var k=0;
 do{

   console.log(k);
   k++;

 }while(k <= 20);


function generateYears(start,end){
   var years =start;
   document.write("<select>");
    do{
     document.write("<option value= \"" +years+"\">" + years +"</option>");
     years++;
   }while(years <= end)
   document.write("</select>");
 }
 generateYears(1900,2018);