从字符串中提取关键字:Javascript

Extract Keywords from String: Javascript

本文关键字：Javascript 关键字 提取 字符串      更新时间：2023-09-26

让我们考虑我有一个字符串&想要为SEO提取不常见的关键词。$text = "This is some text. This is some text. Vending Machines are great.";

&将定义一个常用词数组以忽略提取列表中的关键字，如$commonWords = ['i','a','about','an','and','are','as','at','be','by','com','de','en','for','from','how','in','is','it','la','of','on','or','that','the','this','to','was','what','when','where','who','will','with','und','the','www'];

预期输出：Result=[some,text,machines,vending]

若有人能帮助我们编写从字符串中提取关键字的通用逻辑或过程，我将不胜感激？

这会有所帮助（它支持多种语言）：

https://github.com/michaeldelorenzo/keyword-extractor

var sentence = "President Obama woke up Monday facing a Congressional defeat that many in both parties believed could hobble his presidency."
//  Extract the keywords
var extraction_result = keyword_extractor.extract(sentence,{
                                                            language:"english",
                                                            remove_digits: true,
                                                            return_changed_case:true,
                                                            remove_duplicates: false
                                                       });

有些人喜欢这个

var $commonWords = ['i','a','about','an','and','are','as','at','be','by','com','de','en','for','from','how','in','is','it','la','of','on','or','that','the','this','to','was','what','when','where','who','will','with','und','the','www'];
var $text = "This is some text. This is some text. Vending Machines are great.";
// Convert to lowercase
$text = $text.toLowerCase();
// replace unnesessary chars. leave only chars, numbers and space
$text = $text.replace(/[^'w'd ]/g, '');
var result = $text.split(' ');
// remove $commonWords
result = result.filter(function (word) {
    return $commonWords.indexOf(word) === -1;
});
// Unique words
result = result.unique();
console.log(result);

var string = "This is some text. This is some text. Vending Machines are great.";
var substrings = ['your','words', 'here'],
var results = array();
for (var i = substrings.length - 1; i >= 0; --i) {
    if (string.indexOf(substrings[i]) != -1) {
         // str contains substrings[i]
         array.push(substrings[i]);
    }
}

var arrayLength = commonWords.length;
var words = [];   //new array to say the words
for (var i = 0; i < arrayLength; i++) {
    if ($text.indexOf(commonWords[i]) > -1){
        words.push(commonWords[i]);
    }
}
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