Revision 648837 of continue

<div>
 {{JsStatementsQLAlpha()}}</div>
<h2 id="Summary">Summary</h2>
<p>The <strong>continue statement</strong> terminates execution of the statements in the current iteration of the current or labeled loop, and continues execution of the loop with the next iteration.</p>
<h2 id="Syntax" name="Syntax">Syntax</h2>
<pre class="syntaxbox">
continue [ label ];</pre>
<h3 id="Parameters" name="Parameters">Parameters</h3>
<dl>
 <dt>
  <code>label</code></dt>
 <dd>
  Identifier associated with the label of the statement.</dd>
</dl>
<h2 id="Description" name="Description">Description</h2>
<p>In contrast to the {{jsxref("Statements/break", "break")}} statement, <code>continue</code> does not terminate the execution of the loop entirely: instead,</p>
<ul>
 <li>In a {{jsxref("Statements/while", "while")}} loop, it jumps back to the condition.</li>
</ul>
<ul>
 <li>In a {{jsxref("Statements/for", "for")}} loop, it jumps to the update expression.</li>
</ul>
<p>The <code>continue</code> statement can include an optional label that allows the program to jump to the next iteration of a labeled loop statement instead of the current loop. In this case, the <code>continue</code> statement needs to be nested within this labeled statement.</p>
<h2 id="Examples" name="Examples">Examples</h2>
<h3 id="Example:_Using_continue_with_while" name="Example:_Using_continue_with_while">Example: Using <code>continue</code> with <code>while</code></h3>
<p>The following example shows a {{jsxref("Statements/while", "while")}} loop that has a <code>continue</code> statement that executes when the value of <code>i</code> is 3. Thus, <code>n</code> takes on the values 1, 3, 7, and 12.</p>
<pre class="brush: js">
i = 0;
n = 0;
while (i &lt; 5) {
   i++;
   if (i === 3) {
      continue;
   }
   n += i;
}
</pre>
<h3><h3example: code="" using="">Example: <code>Continue</code> with a label</h3example:></h3>
<p>In the following example, a statement labeled <code>checkiandj</code> contains a statement labeled <code>checkj</code>. If <code>continue</code> is encountered, the program continues at the top of the <code>checkj</code> statement. Each time <code>continue</code> is encountered, <code>checkj</code> reiterates until its condition returns false. When false is returned, the remainder of the <code>checkiandj</code> statement is completed.</p>
<p>If <code>continue</code> had a label of <code>checkiandj</code>, the program would continue at the top of the <code>checkiandj</code> statement.</p>
<pre class="brush: js">
var i = 0,
&nbsp;&nbsp;&nbsp; j = 0;

checkiandj: while (i &lt; 4) {
&nbsp;&nbsp; console.log(i);
&nbsp;&nbsp; i += 1;

&nbsp;&nbsp; checkj: while (j &gt; 4) {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; console.log(j);
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; j -= 1;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if ((j % 2) == 0)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; continue checkj;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; console.log(j + " is odd.");
&nbsp;&nbsp; }
&nbsp;&nbsp; console.log("i = " + i);
&nbsp;&nbsp; console.log("j = " + j);
}
</pre>
<p>Output:</p>
<pre class="brush: js">
0
"i = 1"
"j = 0"

1
"i = 2"
"j = 0" 

2 
"i = 3"
"j = 0"

3
"i = 4"
"j = 0"
</pre>
<h2 id="Specifications">Specifications</h2>
<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>ECMAScript 1st Edition</td>
   <td>Standard</td>
   <td>Initial definition. Unlabeled version.</td>
  </tr>
  <tr>
   <td>ECMAScript 3rd Edition</td>
   <td>Standard</td>
   <td>Labeled version added.</td>
  </tr>
  <tr>
   <td>{{SpecName('ES5.1', '#sec-12.7', 'Continue statement')}}</td>
   <td>{{Spec2('ES5.1')}}</td>
   <td>&nbsp;</td>
  </tr>
  <tr>
   <td>{{SpecName('ES6', '#sec-continue-statement', 'Continue statement')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>&nbsp;</td>
  </tr>
 </tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{ CompatibilityTable() }}</p>
<div id="compat-desktop">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Chrome</th>
    <th>Firefox (Gecko)</th>
    <th>Internet Explorer</th>
    <th>Opera</th>
    <th>Safari</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<div id="compat-mobile">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Android</th>
    <th>Chrome for Android</th>
    <th>Firefox Mobile (Gecko)</th>
    <th>IE Mobile</th>
    <th>Opera Mobile</th>
    <th>Safari Mobile</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
    <td>{{ CompatVersionUnknown() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<h2 id="See_also" name="See_also">See also</h2>
<ul>
 <li>{{jsxref("Statements/break", "break")}}</li>
 <li>{{jsxref("Statements/label", "label")}}</li>
</ul>