检查数组的某个元素是否与以下相同

Question

我正在创建一个将 pdf 解析为文本的服务。当我有该文本时，我必须匹配一组单词。每次匹配时，它都会增加一个计数器。到目前为止，一切都很好。困难在于，在解析为文本时，我无法检查我在 pdf 的哪一页。我已经意识到，在拆分中，每次出现两个连续的换行符（/n/n）就意味着发生了换页。我想做的是检查页面是否已更改，并且除了计算一个单词总共被找到的次数外，还要说出它在哪些页面上。例子let data =  `resignations / resignations. adm. mancom .: berenguer llinaresappointments. adm. unique: calvo valenzuela. other concepts: change of the administrative body:joint administrators to sole administrator. change of registered office. ptda colomer, 6Official Gazette of the Commercial Registryno. 182 Friday, September 18, 2020 p. 33755cve: borme-a-2020-182-03 verifiable insarria). registry data. t 2257, f 100, s 8, h a 54815, i / a 4 (10.09.20) .`let wordsToSearch = ['resignations', "administrators"]    wordsToSearch.forEach((word) => {// inside of here would like to have track of the page as well        let stringArray = data.split(' ');        let count = 0;        let result = ""        for (var i = 0; i < stringArray.length; i++) {            let wordText = stringArray[i];            if (new RegExp(word).test(wordText)) {                count++            }        }        // the expected result would word has appeared count times in the pages etc        result += `${word} has appeared ${count} times\n`        console.log(result)        /*        resignations has appeared 2 times        administrators has appeared 1 times        */    })如果有人也想出另一种方法，那就太好了

Answer 1

您可以在那些双换行符处拆分文本，然后单独分析每个页面。我会这样做：

let data = `resignations / Friday resignations. adm. mancom .: berenguer llinares

            appointments. adm. unique: calvo Friday valenzuela. other concepts: change of the administrative body:

            joint administrators to sole administrator. change of registered office. ptda colomer, 6, Friday

            Official Gazette of the Commercial Registry

            no. 182 Friday, September 18, 2020 p. 33755

            cve: borme-a-2020-182-03 verifiable in

            sarria). registry data. t 2257, f 100, s 8, h a 54815, i / a 4 (10.09.20) .`

function analyseText(text, wordsToFind) {

    const pages = data.split("\n\n");

    const result = {};

    for (let pageIndex = 0; pageIndex < pages.length; pageIndex++) {

        analysePage({

            pageIndex,

            pageText: pages[pageIndex]

        }, wordsToFind, result);

    }

    return Object.keys(result).map(k => result[k]);

}

function analysePage(page, wordsToFind, result) {

    const {

        pageText,

        pageIndex

    } = page;

    wordsToFind.forEach(word => {

        const count = (pageText.match(new RegExp(word, 'g')) || []).length;

        if (count > 0) {

            if (!result[word]) {

                result[word] = {

                    name: word,

                    pageIndices: [],

                    count: 0

                };

            }

            result[word].pageIndices.push(pageIndex);

            result[word].count += count;

        }

    });

}

const result = analyseText(data, ['resignations', "administrators", "Friday"]);

console.log(result);

在此示例中，我只是打印每一页的结果，但您当然可以构建一些结果对象，在其中保存每一页的结果。