Question

代码：

var textArray = new Array(); 
    var allText = results.data._contained.text; 
    for (var i = 0; i < allText.length; i++) { 
     var text1 = allText[i]; 
     var textHtml = "<div id='text_item'>"; 
     textHtml += "<span class='some_div'>{0}</span>".replace("{0}", text1.text_is); 
     textHtml += "</div>"; 
     textArray.push(text1.texts.priority); 

     $("#text_box").append(textHtml); 
    } 

    if (foo === 'Some text') { 
     document.write("match"); 
    } else { 
     document.write("not match"); 
    } 

} 

我有工作正常上述逻辑，但我坚持的东西我没有做过的事情。

这就是我想做的事：

.some_div将包含字符串值跨度。我想要做的是计算相同的值重复多少次。我怎样才能做到这一点？

例如：让我们说的价值是“医药”，它在.some_div独立重复10次。我怎样才能返回它重复了多少次？

Answer 1

如果text1.text_is（它是.some_div范围的内容）是String类型，则可以使用String.split函数来实现该功能。

var wordsCount = {}; 
var allWords = text1.text_is.split(" ") //split by space or the delimiter of the words. 
for (var i = 0, l = allWords.length; i < l; i++) 
{ 
    var word = allWords[i]; 
    wordsCount[word] = (wordsCount[word] || 0) + 1; 
} 

好运

Answer 2

最有效，最便捷的方式做到这一点是使用string.match()使用正则表达式。这具有允许不区分大小写的附加好处。

function countWords(text) { 
 
    var resultArray = []; 
 
    var text = $(".some_div").text(); //store the original text 
 
    text = text.replace(/\W/g, " "); //replace non-alphanumerics with a whitespace 
 
    text = text.replace(/\s{2,}/g, " "); //replace more than one space with a single space 
 

 
    while (text.length > 0) { 
 
    var index = text.indexOf(" "); //find the first space 
 
    
 
    if (index === 0) { 
 
     text = text.slice(1, text.length); //this is a leading space, skip it 
 
    } else { 
 
     var wordToMatch = text.slice(0, index); //find the first word 
 
     var regex = new RegExp(wordToMatch, "gi"); //create case-insensitive regular expression with the word 
 
     var wordCount = text.match(regex).length; //get number of word occurences 
 
     resultArray.push({ word: wordToMatch, count: wordCount }); //store the result for this word 
 
     text = text.replace(regex, ""); //remove this word from the input text 
 
     text = text.replace(/\s{2,}/g, " "); //replace more than one space with a single space again 
 
    } 
 
    } 
 

 
    return resultArray; 
 
} 
 

 
countWords($(".some_div").text()).forEach(function(item) { 
 
    $("#result").append(item.word + ": " + item.count + "<br/>"); 
 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 
 
<span class='some_div'>The field of Medicine is a medicine Field</span> 
 
<br/> 
 
<div id="result"></div>