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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>JavaScript Switch Statement</h1>
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<p class="intro">Conditional statements in JavaScript are used to perform different actions based on different conditions.</p>
<hr />
<h2>Examples</h2>
<p><a target="_blank" href="tryit.asp@filename=tryjs_switch">Switch statement</a><br />
How to write a switch statement.</p>
<hr />
<h2>The JavaScript Switch Statement</h2>
<p>You should use the switch statement if you want to select one of many blocks of
code to be executed.</p>
<h3>Syntax</h3>
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<pre>switch(n)
{
case 1:
<i>execute code block 1</i>
break;
case 2:
<i>execute code block 2</i>
break;
default:
<i> code to be executed if n is
different from case 1 and 2
</i>}</pre>
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<p>This is how it works: First we have a single expression <i>n</i> (most often a
variable), that is evaluated once. The value of the expression is then compared
with the values for each case in the structure. If there is a match, the block
of code associated with that case is executed. Use <b>break</b> to prevent the
code from running into the next case automatically.</p>
<h3>Example</h3>
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<td>
<pre><script type="text/javascript">
//You will receive a different greeting based
//on what day it is. Note that Sunday=0,
//Monday=1, Tuesday=2, etc.</pre>
<pre>var d=new Date();
theDay=d.getDay();
switch (theDay)
{
case 5:
document.write("Finally Friday");
break;
case 6:
document.write("Super Saturday");
break;
case 0:
document.write("Sleepy Sunday");
break;
default:
document.write("I'm looking forward to this weekend!");
}
</script></pre>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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