how to count number of <br> in innerHTML

[jasonc]

I wish to know how I can count how many lines there are by searching the innerHTML of a div

 

can anyone suggest how this can be done?

[The Little Guy]

<script type="text/javascript">
function countlines(){
     var dv = document.getElementById('mydiv').innerHTML;
     var lines = dv.match(/<br>/ig).length + 1;
 alert(lines + " lines")
}
</script>

<input type="button" onclick="countlines()" value="# lines" />

<div id="mydiv">
line<br>
line<br>
line<br>
line<br>
line<br>
line<br>
line
</div>

[Omirion]

More on regular expressions.

http://www.javascriptkit.com/javatutors/re.shtml