问题描述
我需要一个带有子项目编号的嵌套列表,如下所示:
1。项目1
1.1 - 子项目1
1.2 - 子项目2
1.3 - 子项目3
1.4 - 子项目4
1.5 - 子项目5
2.项目2
2.1 - 子项目1
2.2 - 子项目2
2.3 - 子项目3
2.4 - 子项目4
2.5 - 子项目5
嗯,我知道我无法通过纯HTML实现这一目标。使用类似这样的东西并使子列表自动编号会很棒:
< ol>
< li>
项目1
< li>子项目1< / li>
< li>子项目2< / li>
< li>子项目3< / li>
< li>子项目4< / li>
< li>子项目5< / li>
< / ol>
< / li>
< li>
第2项
< ol>
< li>子项目1< / li>
< li>子项目2< / li>
< li>子项目3< / li>
< li>子项目4< / li>
< li>子项目5< / li>
< / ol>
< / li>
< / ol>
是否有使用JavaScript或jQuery的解决方案?
如果你想用jQuery跨浏览器来做:
<$ c (函数(ci,cel){
$($)$($)$($)$($) this).prepend('< span class =pseudo-num>'+ [i + 1,ci + 1] .join('。')+'< / span>');
});
})。addClass('pseudo-processed');
在您的CSS中:
ol .pseudo-num {display:none}
ol.pseudo-processed {list-style:none; padding-left:0}
ol.pseudo-processed .pseudo-num {display:inline; font-weight:bold}
这仅适用于一个级别。您可以更改代码以创建多个级别的递归函数。
设置为逐步增强您的页面。没有Javascript,它会回退到正常的嵌套编号。
$ b
更新:感谢 @Gumbo 的工作,我重新编写了这个代码插入递归插件。它会使用与我之前的示例相同的CSS,但现在它是一个完整的jQuery插件,支持任何深度:
$ .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(如果(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'
}
#id 中调用它:
$( #列表)纲要()。
或者使用@Gumbo的好选择器将它应用于所有 ol
在一页上的标签:
$(ol:not(li> ol))。outline );
您可以覆盖全局默认值或个别基准:
$ .fn.outline.defaults.processedClass ='ol-ready';
//或
$(#list)。outline({processedClass:'ol-ready'});
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'});
这篇关于嵌套的有序列表的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!