JavaScript - Loop with condition on the beginning: while

Condition testing is done at the beginning of the loop. before each iteration the condition is tested, if it is was true. before the first iteration is a condition test, the use of this loop is excellent in situations where perhaps we don't need to execute the cycle.

while

Description

while (condition) statement

Used keywords: while

Input

condition - Logical value The condition can be any expression
statement - statements

Note: Here usable statements:
break statement continue statement

Examples

JavaScript

Loop with condition on the beginning the possible of use:

i=0;
while (i<10) ++i;
x =0;
while (i<20)
{
 i= i+2;
 if (i==16)
 {
    continue;
 }
 x++; 
}

JavaScript

Other pieces of example codes:

while (i>0)
   if (i==10)
     break;
   else 
   {
     i--;
   }

while (y>1)
{
  x++;
  y--;
}

if ( x >= 12 )
   while ( y >= 0 )  
      --y;

while ( y <= 32 )  
   y++;

Loop with condition on the beginning in another programming language:

Differences to: