Break

break is an instruction that allows you to stop processing a loop (or "switch" conditional).
If you want to end a loop before its condition is false, you can use the break instruction after a conditional "if()".

Example:
var total:int = 1;

// create a for() loop
for(var i:int=0; i<4; i++)
{
  total *= 2;
  if(total==8) break;         // ends completely this loop
  trace('i='+ i+ ' - total='+ total);
}

// Output:  i=0 - total=2  i=1 - total=4
When the conditional "if(total==8)" returns true, the code after the "break" will not be executed at all, and the execution of this "for()" loop ends.
The Output panel displays:
i=0 - total=2
i=1 - total=4
- The condition (i<4) is still true, becouse the value of "i" is 1, but the "break;" instruction ends completely this loop.

Continue

The continue instruction skips the remaining statements in the current loop and begins the next iteration at the top of the loop.
The difference between "break" and "continue" is that the "break" statement ends completely the loop, while "continue" ends the current iteration only, and lets the loop to continue with the next iteration.

Example:
var total:int = 1;

// create a for() loop
for(var i:int=0; i<4; i++)
{
  total *= 2;

  // skip other actions in the current iteration when total==4 or total==8
  if(total==4 || total==8) continue;

  trace('i='+ i+ ' - total='+ total);
}
The Output is:
i=0 - total=2
i=3 - total=16
- Notice that when the value of "total" is 4 or 8, the trace() statement after the "continue" instruction is not executed, but the for() loop continue with the next iterations until its condition is false.

"break and "continue" can be used with any loop statement: while(), do..while, for(), for..in, for each..in.

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag is used to add definition lists into a <dl> element?
<dt> <dd> <li>
<dl>
 <dt>HTML</dt>
  <dd> - Hyper Text Markup Language</dd>
  <dd> - Language for web pages</dd>
</dl>
Which CSS property can hide an element on page, letting an empty space in its place?
display position visibility
#id {
  visibility: hidden;
}
Click on the event which is triggered when the mouse clicks on an object.
onclick onmouseover onfocus
document.getElementById("id").onclick = function(){
  alert("http://CoursesWeb.net/");
}
Indicate the PHP variable that contains the contents of both $_GET, $_POST, and $_COOKIE arrays.
$_SESSION $_GET $_REQUEST
if(isset($_REQUEST["id"])) {
  echo $_REQUEST["id"];
}
Break and Continue

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