Question

我有这个HTML：

<div class="hello top">some content</div>
<div class="hello top">some content</div>
<div class="hello">some content</div>
<div class="hello">some content</div>
<div class="hello">some content</div>

...我试图只获得那些有“hello”类而不是“top”类的DIV（我想要获得3个最后的DIV）。

我试过这样的事但没有成功：

foreach( $html->find('div[class="hello"], div[class!="top"]') as $element ) {
  // some code...
}

Answer 1

使用此方法：

var result = $("div:not(.top)");
console.log(result);

//只会获得包含“hello”类的DIV。

Answer 2

根据此表（Supports these operators in attribute selectors）：

Filter                Description
[attribute]           Matches elements that have the specified attribute.
[!attribute]          Matches elements that don't have the specified attribute.
[attribute=value]     Matches elements that have the specified attribute with a certain value.
[attribute!=value]    Matches elements that don't have the specified attribute with a certain value.
[attribute^=value]    Matches elements that have the specified attribute and it starts with a certain value.
[attribute$=value]    Matches elements that have the specified attribute and it ends with a certain value.
[attribute*=value]    Matches elements that have the specified attribute and it contains a certain value.

您可以使用：

foreach( $html->find('div[class$="hello"]') as $element ) {
  // some code...
}

但这不是可靠的解决方案，因为它也匹配：

<div class="top hello">

Answer 3

这样您就可以选择3个最新的“hello”类名。

<html>
    <header>
    </header>
    <body>
        <?php
        $html= '
        <div class="hello top">some content</div>
        <div class="hello top">some content</div>
        <div class="hello">ee some content</div>
        <div class="hello">ee some content</div>
        <div class="hello">ee some content</div>';

            $dom = new DomDocument();
            $dom->loadHTML($html);
            $dom_xpath = new DOMXpath($dom);
            $elements = $dom_xpath->query('//div[@class="hello"]');

            foreach($elements as $data){
               echo $data->getAttribute('class').'<br />';
            }
        ?>
    </body>
</html>

Answer 4

[attribute $ = value]匹配具有指定属性的元素，并以特定值结束。在您的情况下使用

time_since_epoch

如何获得某些类别的DIV并且没有？

4 个答案: