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如何使用给定jquery选择中的元素生成对象

jquery-selectors jquery javascript

Robert Andrews · 技术社区 · 8 年前

我有以下jquery选择,有以下帮助 LGSon's answer 对 earlier question …

$('div.content__article-body > *').not('aside').each( function( index, value ) {
  console.log( value.outerHTML );
});

但是,我需要学习如何以符合 result 下面是我的部分代码…

我想我需要把 outerHTML 元素到jquery行,但我在这方面没有取得太多成功。

在本例中,选择用于 "entry" .

function pageFunction(context) {

    // Called on every page the crawler visits, use it to extract data from it
    var $ = context.jQuery;

    // If page is START or a LIST,
    if (context.request.label === 'START' || context.request.label === 'LIST') {

        context.skipOutput();

        // First, gather LIST page
        $('ol.pagination li a').each(function() {
            context.enqueuePage({
                url: window.location.origin + $(this).attr('href'),
                label: 'LIST'
            });
        });

        // Then, gather every DETAIL page
        $('h3>a').each(function(){
            context.enqueuePage({
                url: window.location.origin + $(this).attr('href'),
                label: 'DETAIL'
            });
        });

    // If page is actually a DETAIL target page
    } else if (context.request.label === 'DETAIL') {

        /* context.skipLinks(); */

        var tags = [];
        $('span.tags a').each( function() {
             tags.push($(this).text());    
        });

        result = {
            "title": $('h1.entry-title').text(),
            "excerpt": $('div.content-blog__body p strong:first').text().trim(),
            "entry": $('div.content-blog__body').html().trim(),
            "datestamp": $('meta[property="article:published_time"]').attr('content'),
            tags: tags
        };

    }
    return result;
}

1 回复 | 直到 8 年前

Asons Oliver Joseph Ash 8 年前

这里是一个简化的 pageFunction ,显示如何搜索结果集,使用 .find() .

正如我现在知道你的意思(在相关问题中) this answer from the same (我认为这也应该归功于我,加上我的1分) 会得到一个要使用的结果集,而不是我给出的元素数组,尽管这里我使用了jquery append() 创建新对象时。

堆栈段

var $res = $('<div></div>').append( $('div.content__article-body') );
$res.find('aside').remove();

console.log( pageFunction() );

function pageFunction() {

        result = {
            "title": $res.find('h2').text(),
            "excerpt": $res.find('h2 ~ p:first').text().trim()
        };

    return result;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<div class="content__article-body from-content-api js-article__body" itemprop="articleBody" data-test-id="article-review-body">
<p>A wise man once <a href="http://www.quora.com/Who-originally-suggested-that-if-youre-not-paying-for-the-product-you-are-the-product" rel="nofollow" data-link-name="in body link" class="u-underline">said</a>: âIf youâre not paying for it, youâre the product.â Thatâs what is happening in the magazine world, as <a href="https://www.theguardian.com/media/2015/jul/06/nme-to-go-free-with-larger-circulation" data-link-name="in body link" class="u-underline">NME abandons its cover price</a> after 63 years, to go free.<br></p>
<p>In doing so, the title is turning its readers from customers in to advertiser targets. But NME is far from the first property to try this trick. <a href="http://articles.baltimoresun.com/1996-11-13/features/1996318156_1_village-voice-schneiderman-circulation" rel="nofollow" data-link-name="in body link" class="u-underline">The Village Voice</a>, the <a href="http://www.britishpapers.co.uk/england-wmids/shrewsbury-chronicle/" rel="nofollow" data-link-name="in body link" class="u-underline">Shrewsbury Chronicle</a>, the <a href="https://news.google.com/newspapers?id=HU1aAAAAIBAJ&amp;sjid=KSgMAAAAIBAJ&amp;pg=1120%2C535142" rel="nofollow" data-link-name="in body link" class="u-underline">Standard</a> of Hong Kong, <a href="https://gigaom.com/2007/10/31/419-friends-reunited-dropping-subscriptions-to-go-free-ad-supported-report/" rel="nofollow" data-link-name="in body link" class="u-underline">Friends Reunited</a>, the <a href="https://gigaom.com/2009/10/02/419-london-evening-standard-bold-re-birth-or-a-free-folly/" rel="nofollow" data-link-name="in body link" class="u-underline">Evening Standard</a>, the <a href="http://www.fulhamsw6.com/default.asp?section=info&amp;spage=common/contrinity001.htm" rel="nofollow" data-link-name="in body link" class="u-underline">Fulham and Hammersmith Chronicle</a>, Time Out in <a href="https://gigaom.com/2008/09/01/419-time-out-seeking-investors-could-go-free-and-beef-up-online/" rel="nofollow" data-link-name="in body link" class="u-underline">London</a> and <a href="http://www.timeout.com/about/time-out-group/latest-news/time-out-new-york-announces-launch-of-its-magazine-to-free-weekly-distribution" rel="nofollow" data-link-name="in body link" class="u-underline">New York</a>, and now <a href="https://www.theguardian.com/media/greenslade/2015/jul/08/the-sun-lowers-its-paywall-allowing-free-access-to-many-stories" data-link-name="in body link" class="u-underline">parts of the Sunâs website</a> are all among those to have dropped their fees in favour of frees.</p>
<p>But what has become of the converts? And what do their fortunes since tell us, <a href="https://www.theguardian.com/music/nme" data-link-name="auto-linked-tag" data-component="auto-linked-tag" class="u-underline">NME</a> and other operators about the key ingredients for a successful switch?</p>
<aside class="element element-rich-link element--thumbnail element-rich-link--not-upgraded" data-component="rich-link" data-link-name="rich-link-1 | 1">
<div class="rich-link">
<div class="rich-link__container">
<div class="rich-link__header">
<h1 class="rich-link__title">Old media's prospects have improved but the new media threat looms large</h1>
</div>
<div class="rich-link__read-more">
<div class="rich-link__arrow">
<span class="inline-arrow-in-circle inline-icon ">
<svg width="24" height="24" viewbox="0 0 24 24" class="inline-arrow-in-circle__svg inline-icon__svg">
<path class="rich-link__arrow-icon" d="M12 0C5.373 0 0 5.373 0 12s5.373 12 12 12 12-5.373 12-12S18.627 0 12 0m.21 19l-.637-.668 4.888-6.326H4.996v-1.01h11.465l-4.888-6.333.637-.668L19 11.153v.685l-6.79 7.157" fill-rule="evenodd"/>
</svg> </span>
</div>
<div class="rich-link__read-more-text">
Read more
</div>
</div>
<a class="rich-link__link u-faux-block-link__overlay" href="https://www.theguardian.com/media-network/2015/mar/20/new-media-threat-buzzfeed-vice" aria-label="Old media's prospects have improved but the new media threat looms large"></a>
</div>
</div>
</aside>
<h2>1. Know your predicament</h2>
<p>It would be nice to say the switch to free comes either out of benevolence or out of a market opportunity. The reality is, operators invariably flick the switch under external pressure of a poor business outlook â no amount of dressing up as a âbold relaunchâ can change that.</p>
<p>NMEâs circulation was falling by <a href="https://www.theguardian.com/media/2014/feb/13/nme-relaunch-sales-slide-ipc-media" data-link-name="in body link" class="u-underline">around a fifth annually</a>. The Evening Standard was frustrated to find itself far behind national dailies on ad plannersâ schedules, locking it out of big brand bucks, according to someone familiar with the strategy to switch.</p>
<p>The Village Voice dropped its cover charge in 1996 after being eaten into by rival New York Press being given away in green sidewalk boxes, while Hong Kongâs Standard newspaper was forced to act when the government removed a decree that listed companies must buy classified ads in newspapers. But the key â as anyone who has heard the â<a href="https://en.wikipedia.org/wiki/Boiling_frog" rel="nofollow" data-link-name="in body link" class="u-underline">boiling frog</a>â allegory will know â is to recognise when it is your time to change tack.</p>
</div>