Question

字符串中有一些类似的单词，我只需要突出显示一个单词。我有这个特定单词的索引值。我正在使用Mark JS。我需要在标记JS函数的过滤器部分执行此操作。但不确定在过滤时如何获得每个单词的索引值。

以下是要测试的fiddle

代码JS

$(function() {    
    $content = $(".content"),
    currentIndex = 0;        
    var indexVal = 40;
  $('#markBtn').on("click", function() {
    var searchVal = " ipsum ";
    $content.unmark({
      done: function() {
      console.log("unmark")
        $content.mark(searchVal, {          
            "element": "span",
            "className": "mark",
            "accuracy": "partially",
            "iframes": true,
            "ignoreJoiners": true,
            "acrossElements": true,
            "separateWordSearch": true,
            "diacritics": false,
            "filter": function (textNode, foundTerm, totalCounter, counter) {
                console.log("marks - filter  " + textNode+" "+foundTerm);
            //check indexVal with foundTerm and return true
            return true;
            },
            "each": function (node) {
            console.log("marks - each  " + node);
            },
            "done": function() {
                console.log("marks - done  ");            
          }
        });

      }
    });
  });
  });

HTML

<div class="header">
  Mark second word 'ipsum' in the text below.
  <button id="markBtn">Mark Text</button>
</div>
<div class="content">
  <p>Lorem ipsum dolor sit amet, consectetur ipsum adipiscing elit ipsum.</p>
</div>

Answer 1

过滤器应返回您要标记的当前索引：

"filter": function (textNode, foundTerm, totalCounter, counter) {

    console.log("marks - filter  " + textNode+" "+foundTerm);
   var result = totalCounter == currentIndex;
   return result;
},

所以如果你把currentIndex = 0，它会选择第一个匹配，依此类推......

Answer 2

请参阅此链接。

它可能有助于你

http://jsfiddle.net/sadhique92/HfS7e/1231/

<script>
function highlightSearch() {
    var text = document.getElementById("query").value;
    var query = new RegExp("(\\b" + text + "\\b)", "gim");
    var e = document.getElementById("searchtext").innerHTML;
    var enew = e.replace(/(<span>|<\/span>)/igm, "");
    document.getElementById("searchtext").innerHTML = enew;
    var newe = enew.replace(query, "<span>$1</span>");
    document.getElementById("searchtext").innerHTML = newe;
}
</script>

<style>
#searchtext span{
    background-color:#FF9;
    color:#555;
}

div {
    padding: 10px; 
}

</style>

<div><h2>Find and highlight text in document</h2>
<form action="" method="" id="search" name="search">
<input name="query" id="query" type="text" size="30" maxlength="30">
<input name="searchit" type="button" value="Search" onClick="highlightSearch()">
</form></div>
<div id="searchtext">
<p>JavaScript is the programming language of the Web. The overwhelming majority of
modern websites use JavaScript, and all modern web browsers—on desktops, game
consoles, tablets, and smart phones—include JavaScript interpreters, making Java-
Script the most ubiquitous programming language in history. JavaScript is part of the
triad of technologies that all Web developers must learn: HTML to specify the content
of web pages, CSS to specify the presentation of web pages, and JavaScript to specify
the behavior of web pages. This book will help you master the language.</p>
<p>If you are already familiar with other programming languages, it may help you to know
that JavaScript is a high-level, dynamic, untyped interpreted programming language
that is well-suited to object-oriented and functional programming styles. JavaScript
derives its syntax from Java, its first-class functions from Scheme, and its prototypebased
inheritance from Self. But you do not need to know any of those languages, or
be familiar with those terms, to use this book and learn JavaScript.</p>
<p>The name "JavaScript" is actually somewhat misleading. <span>Except</span> for a superficial syntactic
resemblance, JavaScript is completely different from the Java programming language.
And JavaScript has long since outgrown its scripting-language roots to become
a robust and efficient general-purpose language. The latest version of the language (see
the sidebar) defines new features for serious large-scale software development.</p>
</div>

Answer 3

您的问题：不确定在过滤时如何获取每个单词的索引值？

Mark JS文档内容如下：

过滤功能：过滤或限制匹配的回调。将为每个匹配调用它并接收以下参数：

包含匹配项的文本节点
已找到的术语
指示函数调用时所有标记总数的计数器
指示术语标记数的计数器

如果标记应该，该函数必须返回false停止，否则为真。

按顺序：第四个参数是找到的每个单词的计数器（索引）。

突出显示来自相似单词字符串

3 个答案: