Question

我最终想做什么？

检查两个或更多国家/地区的国家/地区关键字的新闻文章JSON，并返回这些文章。

这有点复杂（至少对我而言），所以请耐心等待。

我目前正在从API接收新闻文章JSON。我成功使用Underscore _.map来获取每个对象的描述键值。我将为关键字迭代这些值：

let combinedBing = this.bingWorldJSON.value.concat(this.bingPoliticsJSON.value);
let bingArray = _.map(combinedBing, 'description');

我正在检查那些描述我可能在另一个（动态）数组中的关键字，称为事件。我正在使用.map方法。例如：

  let event = ["United States", "Russia"]
  let result =  event.map(function(word){
        return newArray.filter(function(article){
        // console.log(article);
        return article.toString().indexOf(word) > -1;
      });
    });

这将返回一个二维数组，如下所示：

[Array(4), Array(0)]
0:Array(4)
0:"No sign probes into Russia, Trump campaign will die down"
1:"Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron"
2:"Senate Russia investigation to add 2 staffers"
3:"Former Trump adviser Flynn likely broke law with Russia trip: lawmakers"
length:4
__proto__:Array(0)
1:Array(0)
length:2
__proto__: Array(0)

但是，我并不想使用事件数组中的单词，因为它非常有限。为什么？因为返回的新闻文章并不总是使用严格的国家名称，但通常具有语义等价物（即＆＃34; US＆＃34;而不是＆＃34;美国＆＃34;，或＆＃ 34;俄罗斯＆＃34;而不是＆＃34;俄罗斯＆＃34;）。

因为我的事件＆＃39;数组是动态创建的（我无法更改该数组中的严格国家/地区名称），我正在将一组硬编码的等效关键字推送到另一个数组（如果该国家/地区存在于＆＃39; event＆＃39;）。因此，如果我的事件是＆＃39;

["United States, "Russia"]

我还将创建一个二维数组，如下所示：

[["United States", "U.S.", "US", "America"], ["Russia", "Russian", "Putin", "Moscow"]]

而不是使用event.map（如上所述），我试图找出如何映射每个数组的关键字（在二维数组中）与我返回的文章。不仅如此，还要返回包含来自两个或更多国家/地区的关键字的文章。例如，如果一篇文章有关键字＆＃34;美国＆＃34;和＆＃34;莫斯科＆＃34;，它将返回该文章，以及包含这两个国家的关键字组合的任何其他文章。

我知道这看起来有点令人费解。但由于我在使用这些API中没有关键字搜索，因此我尝试手动执行。

我真的很感激阅读这篇文章所需的耐心！感谢您提供有关如何处理此问题的任何帮助或想法。

Answer 1

如果它是多维数组

，您可以使用find

let newArray = ["No sign probes into Moscow, Trump (America) campaign will die down", "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron", "Senate U.S.(United States) investigation to add 2 staffers", "Putin foo bar", "US test"];

let event = [["United States", "U.S.", "US", "America"], ["Russia", "Russian", "Putin", "Moscow"]]
let result = event.map(words => newArray.filter(article => words.find(word => article.toString().indexOf(word) > -1)));

console.log(result);

Answer 2

如果您只关心eventKeywords数组中包含单个关键字的事件，则以下工作

const events = [
  "No sign probes into Russia, Trump campaign will die down",
  "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
  "Senate Russia investigation to add 2 staffers",
  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
]
const eventKeywords = [["United States", "U.S.", "US", "America", "Trump"], ["Russia", "Russian", "Putin", "Moscow"]]

const myDesiredEvents = events.filter(ev => {
  return eventKeywords.filter(keywords => {
    return keywords.filter(k => ev.toString().indexOf(k) > -1).length > 0
  }).length > 0
})

// myDesiredEvents == [
//  "No sign probes into Russia, Trump campaign will die down",
//  "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
//  "Senate Russia investigation to add 2 staffers",
//  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
//]

如果您需要的事件至少包含2个不同的关键字，请使用以下内容（最后只更改.length >= 2）

const events = [
  "No sign probes into Russia, Trump campaign will die down",
  "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
  "Senate Russia investigation to add 2 staffers",
  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
]
const eventKeywords = [["United States", "U.S.", "US", "America", "Trump"], ["Russia", "Russian", "Putin", "Moscow"]]

const myDesiredEvents = events.filter(ev => {
  return eventKeywords.filter(keywords => {
    return keywords.filter(k => ev.toString().indexOf(k) > -1).length > 0
  }).length >= 2
})

// myDesiredEvents == [
//  "No sign probes into Russia, Trump campaign will die down",
//  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers"
//  ]

编辑添加一个扁平选项，这是一个更少的代码和更清洁的

如果您只需要在二维关键字数组中进行一次匹配，如果您展平二维数组，则会将其转换为单个关键字数组以进行检查

const events = [
  "No sign probes into Russia, Trump campaign will die down",
  "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
  "Senate Russia investigation to add 2 staffers",
  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
]
const eventKeywords = [["United States", "U.S.", "US", "America", "Trump"], ["Russia", "Russian", "Putin", "Moscow"]]
const flattenedEventKeywords = [].concat.apply([], eventKeywords)
// flattenedEventKeywords == ["United States", "U.S.", "US", "America", "Trump", "Russia", "Russian", "Putin", "Moscow"]

const myDesiredEvents = events.filter(ev => {
  return flattenedEventKeywords.filter(keywords => {
    return ev.toString().indexOf(keywords) > -1
  }).length > 0
})

// myDesiredEvents == [
//  "No sign probes into Russia, Trump campaign will die down",
//  "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron",
//  "Senate Russia investigation to add 2 staffers",
//  "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers",
//]

Answer 3

只获得那些提及至少两个不同国家（或其中一个替代词）的文章，然后：

  <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None" Width="1000px" HorizontalAlign="Center" OnSelectedIndexChanged="GridView1_SelectedIndexChanged">
        <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
        <Columns>
            <asp:TemplateField HeaderText="IDAfspraken">
                <ItemTemplate>
                    <asp:Label ID="Label4" runat="server" Text='<%# Eval("IDAfspraken") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
          </asp:GridView>

如果您希望仅包含与事件的所有条目匹配的文章，而不仅仅是2，那么请使用const bingArray = [ "No sign probes into Russia, Trump campaign will die down", "Russian Hackers Who Targeted Clinton Appear to Attack France’s Macron", "Senate Russia investigation to add 2 staffers", "Former Trump adviser Flynn likely broke law with Russia trip: lawmakers", 'Big meeting in Moscow tomorrow', 'Russia has U.S. ambassy closed', 'Did Putin influence the United States elections?', ]; const event = [["United States", "U.S.", "US", "America"], ["Russia", "Russian", "Putin", "Moscow"]]; const matches = bingArray.filter( article => event.filter( words => words.find( word => article.includes(word) ) ).length > 1 ); console.log('articles mentioning at least 2 countries:'); console.log(matches);：

every

如何检查数组中的字符串是否包含来自二维数组的两个或多个字符串？

3 个答案: