jsref_sort.asp

W3Schools tutorial..web designing

  <tr>
    <td>
    <pre>Jani,Hege,Stale,Kai Jim,Borge,Tove
Borge,Hege,Jani,Kai Jim,Stale,Tove</pre>
    </td>
</tr>
</table>
<br />



<hr />

<h2>Example 2</h2>

<p>In this example we will create an array containing numbers and sort it:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table1">
  <tr>
    <td>
    <pre>&lt;script type=&quot;text/javascript&quot;&gt;</pre>
    <pre>var arr = new Array(6);
arr[0] = &quot;10&quot;;
arr[1] = &quot;5&quot;;
arr[2] = &quot;40&quot;;
arr[3] = &quot;25&quot;;
arr[4] = &quot;1000&quot;;
arr[5] = &quot;1&quot;;</pre>
	<pre>document.write(arr + &quot;&lt;br /&gt;&quot;);
document.write(arr.sort());</pre>
	<pre>&lt;/script&gt;</pre>
    </td>
</tr>
</table>

<p> 
The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table2">
  <tr>
    <td>
    <pre>10,5,40,25,1000,1
1,10,1000,25,40,5</pre>
    </td>
</tr>
</table>

<p><b>Note that the numbers above are NOT sorted correctly (by numeric value). 
To solve this problem, we must add a function that handles this problem:</b></p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table5">
  <tr>
    <td>
    <pre>&lt;script type=&quot;text/javascript&quot;&gt;</pre>
    <pre>function sortNumber(a,b)
{
return a - b;
}</pre>
	<pre>var arr = new Array(6);
arr[0] = &quot;10&quot;;
arr[1] = &quot;5&quot;;
arr[2] = &quot;40&quot;;
arr[3] = &quot;25&quot;;
arr[4] = &quot;1000&quot;;
arr[5] = &quot;1&quot;;</pre>
	<pre>document.write(arr + &quot;&lt;br /&gt;&quot;);
document.write(arr.sort(sortNumber));</pre>
	<pre>&lt;/script&gt;</pre>
    </td>
</tr>
</table>

<p> 
The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table6">
  <tr>
    <td>
    <pre>10,5,40,25,1000,1
1,5,10,25,40,1000</pre>
    </td>
</tr>
</table>
<br />



<hr />

<h2>Try-It-Yourself Demos</h2>
<p><a target="_blank" href="tryit.asp@filename=tryjsref_sort">sort() 
alphabetically</a><br />
How to use sort() to sort an array alphabetically.</p>
<p><a target="_blank" href="tryit.asp@filename=tryjsref_sort2">sort() by number</a><br />
How to use sort() to sort an array by number.</p>
<hr />
<a href="jsref_obj_array.asp"><img class="navup" src="../images/up.gif" alt="Array Object Reference" border="0" /> Complete Array Object Reference</a>
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