选择具有两个类的元素并将其包装 [英] Selecting element having two classes and wrapping them

问题描述

HTML

<div>
 <span class="openParen bm0">(</span>
 <span class="closeParen bm0">)</span>
 <span class="openParen bm3">(</span>
 <span class="openCurly bm1">{</span>
 <span class="openParen bm2">(</span>
 <span class="closeParen bm2">)</span>
 <span class="closeParen bm3">)</span> 
 <span class="closeCurly bm1">}</span>
</div>

更新 我希望使用bm类名将其成对包装在<span class="new"></span>中，而我只想将使用Paren作为类名的包装起来

UPDATE I wanted this to be wrapped in <span class="new"></span> by pairs using the bm classname, and i only wanted to wrapped those with Paren on their class name

无法正确包装

<div>
  <div>if<span class="openParen bm1">(</span>b<3 && b>0<span class="closeParen bm1">)</span>{</div>
</div>

推荐答案

您可以使用 .wrapAll()并使用bm0类选择元素

You can use .wrapAll() and use the bm0 class to select the elements

var ops = /(==|<=|>=|!=|>|<)/,
    prev = /(if|else\s+if|while|for)/;
$('.openParen').each(function () {
    var bm = this.className.match(/\b(bm\d+)\b/)[1],
        $this = $(this),
        $close = $('.closeParen.' + bm);

    var $set = $(this),
        next = this.nextSibling;
    while (next) {
        $set = $set.add(next);
        if ($close.is(next)) {
            break;
        }
        next = next.nextSibling;
    }

    if (ops.test($set.text())) {
        var prevEl = this.previousSibling;
        var $span = $set.wrapAll('<span class="new"></span>').parent();
        if (prevEl && prevEl.nodeType == 3 && prev.test($(prevEl).text())) {
            $span.prepend(prevEl)
        }
    }
})

演示:小提琴

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