I need a nested list with subitem numbering, like this:
1. Item 1
1.1 - Subitem 1
1.2 - Subitem 2
1.3 - Subitem 3
1.4 - Subitem 4
1.5 - Subitem 5
2. Item 2
2.1 - Subitem 1
2.2 - Subitem 2
2.3 - Subitem 3
2.4 - Subitem 4
2.5 - Subitem 5
Well, I know I cannot achieve that with pure HTML. It would be great to use something like this and have the sublist automatically numbered:
<ol>
<li>
Item 1
<ol>
<li>Subitem 1</li>
<li>Subitem 2</li>
<li>Subitem 3</li>
<li>Subitem 4</li>
<li>Subitem 5</li>
</ol>
</li>
<li>
Item 2
<ol>
<li>Subitem 1</li>
<li>Subitem 2</li>
<li>Subitem 3</li>
<li>Subitem 4</li>
<li>Subitem 5</li>
</ol>
</li>
</ol>
Is there a solution for this using JavaScript or jQuery or something?
If you want to do it cross-browser with jQuery:
$("ol#list ol").each(function(i, el){
$(this).children().each(function(ci,cel){
$(this).prepend('<span class="pseudo-num">' + [i + 1, ci + 1].join('.') + ' </span>');
});
}).addClass('pseudo-processed');
And in your CSS:
ol .pseudo-num { display: none }
ol.pseudo-processed { list-style: none; padding-left: 0 }
ol.pseudo-processed .pseudo-num { display: inline; font-weight: bold }
This is for one level only. You could alter the code to create a recursive function for multiple levels.
This is setup to progressively enhance your page. Without Javascript it would fallback to normal nested numbering.
UPDATE: Thanks to @Gumbo work, I reworked this code into a recursive plugin. It would use the same CSS as in my previous example, but now it is a "full fledged" jQuery plugin with support for any depth:
$.fn.outline = function(options, counters){
var options = $.extend({}, $.fn.outline.defaults, options),
counters = counters || [];
this.each(function(){
$(this).children('li').each(function(i){
var ct = counters.concat([i + 1]);
if(counters.length){
$('<span></span>')
.addClass(options.numberClass)
.text(ct.join('.') + ' ')
.prependTo(this);
}
$(this).children('ol').outline(options, ct);
})
});
if(!counters.length) this.addClass(options.processedClass)
}
$.fn.outline.defaults = {
numberClass: 'pseudo-num',
processedClass: 'pseudo-processed'
}
You could then call it on a specific #id
:
$("#list").outline();
Or use @Gumbo's nice selector to apply it to all ol
tags on one page:
$("ol:not(li > ol)").outline();
And you can either override the defaults globally, or on an individual basis:
$.fn.outline.defaults.processedClass = 'ol-ready';
// or
$("#list").outline({processedClass: 'ol-ready'});
You can use CSS to do so:
OL { counter-reset: item }
LI { display: block }
LI:before { content: counter(item) ". - "; counter-increment: item }
LI LI:before { content: counters(item, ".") " - "; counter-increment: item }
But it requires support for counter
and counters
.
Edit Here’s a jQuery approach similar to dcneiner’s but with no limitation to depth:
function foo($ol, counters) {
counters = counters || [];
$ol.each(function(i) {
var $this = $(this);
$this.children("li").each(function(i) {
var $this = $(this);
$this.prepend(counters.concat([i+1]).join(".") + " ");
$this.children("ol").each(function(j) {
foo($(this), counters.concat([i+1]));
});
});
});
}
foo($("ol:not(li > ol)"));
Neither js nor jquery but CSS:
<STYLE type="text/css">
UL, OL { counter-reset: item }
LI { display: block }
LI:before { content: counters(item, "."); counter-increment: item }
</STYLE>
More here: http://www.w3.org/TR/WCAG10-CSS-TECHS/#lists