试图获取 JavaScript 中动态字符串的最后一个字符？

Question

我正在用 JS 创建一个新闻抓取应用程序，用于提取文章及其描述。

下面是刮板；但是，在提取描述时，它还会从 link 中提取 "read me" 作为文本。我仍想摘录，但删除最后的阅读更多内容：

app.get("/scraper", function(req, res) {
  // Grabs the body of the html with request
  request("https://techcrunch.com/", function(error, response, html) {
    // Load into cheerio with $ as a shorthand selector
    var $ = cheerio.load(html);
    // Grabs the title, description, and link within the block-content class.
    $(".block-content").each(function(i, element) {

              // Save an empty result object
              var result = {};

              // Saves them as properties of the result object
              result.title = $(this).find(".post-title").children("a").text();
              result.link = $(this).find("a").children(".excerpt").attr("href");
              result.description =$(this).find(".excerpt").text();

              console.log(result);

        if (result.title && result.link && result.description) {

      // Creates a new entry using the article model

      var entry = new Article(result);

            // Saves that entry to the db
            entry.save(function(err, doc, next) {
              // Log any errors
              if (err) {
                console.log(err);
              }
            });
        }
});

这是对象；你可以在描述中看到 "read more"。

{ title: 'Snapcart raises M to shed light on consumer spending in emerging markets',
  link: 'https://techcrunch.com/2017/10/25/snapcart-raises-10m/',
  description: 'Taking on a giant like the  billion research firm Nielsen is no easy task. But tucked away in Southeast Asia, Snapcart is a two-year old company that is making progress by shining light on the black box that is consumer spending in emerging markets. Read More' }

Answer 1

result.description =$(this).find(".excerpt").text().replace(' Read More', '');

使用 replace 将从字符串中删除 Read More。

试图获取 JavaScript 中动态字符串的最后一个字符？

Trying to get the last characters of dynamic string in JavaScript?

javascript

jquery

mongoose

node.js

cheerio