搜索正文字符串然后搜索样式

时间:2015-11-19 12:41:07

标签: jquery replace contains nodevalue

我需要使用jQuery搜索文档来查找特定单词。它实际上是一个品牌名称,无论在何处使用都必须是粗体和斜体。

我可以使用:contain执行此操作,但仅限于单个元素。我需要能够通过锚点,列出div等。

$( "a:contains('brand name')" ).html().replace('brand name'.... 

任何想法都会受到赞赏。

更新: 我已经实现了这个目的,并取代了页面上的所有内容,但我现在需要用类包装。如此接近但却难以接受这一点。再次提出一个想法。

    $("body *").contents().each(function() {
  if(this.nodeType==3){
    this.nodeValue = this.nodeValue.replace(/brandname/g, 'colour');

  }
});

6 个答案:

答案 0 :(得分:3)

您可以使用文档片段替换textNodes。这允许您对文本和样式化节点进行分组,并将其与现有textNode交换。

var x = 0;
$("body *").contents().each(function() {

   if (this.nodeType == 3 && this.parentElement.tagName != "SCRIPT") {

     var text = this.nodeValue;
     var i = 0, lastIndex = 0;
     var search = /brandname/ig;
     var result;
     var parent = this.parentNode;
     var textNode = null;
     var highlight = null;
     var textRange = "";
     var fragment = document.createDocumentFragment();

     // Do search
     while ((result = search.exec(text)) !== null) {
    
       // add plain text before match
       textRange = text.substring(lastIndex, result.index);
       if (textRange != '') {
         textNode = document.createTextNode(textRange);
         fragment.appendChild(textNode);
       }
       
       // add highlight elements
       highlight = document.createElement('span');
       highlight.innerHTML = result[0];
       highlight.className = "hi";
       fragment.appendChild(highlight);
       lastIndex = search.lastIndex;
     }

     // Add trailing text
     textRange = text.substring(lastIndex);
     if (textRange != '') {
       textNode = document.createTextNode(textRange);
       fragment.appendChild(textNode);
     }
     
     // Replace textNode with our text+highlight
     if(fragment.children.length > 0) {
       this.parentNode.replaceChild(fragment, this);
     }
   }

 });
span.hi {
  background-color: #FFCC00;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p>
  Hello world this is my brandname. The BrAnDNAMe is regex matched and we can change subelements like "<a href=''>Brandname</a>." It should not replace <b>elements</b> that don't match.
</p>

答案 1 :(得分:2)

&#13;
&#13;
$.fn.ignore = function(sel){
  return this.clone().find(sel||">*").remove().end();
};

function rebrand(el, word){
  if (!word.length && !el) return;
  var $el = $(el), html = $el.ignore("script").html(),
      rgx = new RegExp("(?![^<]+>)("+ word +")", "g");
  $el.html( html.replace(rgx, "<span class='brand'>$1</span>") );
}

$(function() { // DOM ready

  // !!!  IMPORTANT: REBRAND FIRST !!!
  rebrand("body", "Brand Name");
  // so the following code will not break on lost events, data bindings etc...

  // Other DOM ready code here like:
  $("button").click(function(){ $(this).css({color:"red"}); });
  
});

// Other JS, jQ code here...
&#13;
.brand{
    color: rgba(255,0, 100,0.4);
    font: italic normal bold 1em/1 sans-serif;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
  <h1>Title with Brand Name!</h1>
  <p>
    Change styles only to Brand Name!<br>
    but don't mess with <a href="#">links to Brand Name are cool</a><br>
    <button>Button with Brand Name works!</button>
  </p>
  <ul>
    <li>Other Brand</li><li>Brand Name</li><li>Brandy</li>
  </ul>
</div>
<div>
  <h2>Subtitle <i>and italic Brand Name</i></h2>
  <p>The HTML will not get messed cause of Brand Nameing<br>
  Paragraph with a &lt;b&gt; tag <b>bold Brand Name actually</b></p>
  <code>This is a code tag with a Brand Name :)</code>
</div>
&#13;
&#13;
&#13;

赞赏这两个答案:
jQuery.ignore Plugin
Highlight Words (Ignoring names of HTML tags)

答案 2 :(得分:2)

如果您的代码有效,只需添加类似的代码行:

this.nodeValue.wrap( "<span class='new'></span>" );

答案 3 :(得分:1)

我的解决方案与前一个解决方案略有不同,但无论如何总是有效的,我认为。

在下面我的jQuery函数:

function replaceBrand(brandName) {
    $('body').find(":not(iframe)").contents().filter(function(index, element) {
    if (element.nodeType == 3 && element.nodeValue.indexOf(brandName) != -1) {
        var newInnerValue = element.nodeValue.replace(brandName, '<div><span class="brand">' + brandName + '</span></div>');
        $(element).replaceWith(newInnerValue);
    }
});

}

replaceBrand(&#39;品牌名称&#39;,&#39;新品牌&#39;);

答案 4 :(得分:1)

var rgx_BRAND = /(foo)/ig;
$("*")
    .contents()
    .filter(function() {
        return this.nodeType === Node.TEXT_NODE && this.textContent.search(rgx_BRAND) > -1;
    })
    .each(function(){
        var html = this.textContent.replace(rgx_BRAND, '<b class="-my-brand">$1</b>');
        $(this).before(html).remove();
    });

希望这有帮助,干杯

答案 5 :(得分:1)

从您的代码段开始:

$(function() {
    var parent, needle = 'brandname',
        regex = new RegExp(needle, 'g');
    $("body *").contents().each(function() {
        if(this.nodeType==3 && ((parent = $(this.parentNode)).length > 0) {
            parent.html(parent.html().replace(
                regex, '<span class="brand-name">' + needle + '</span>'));
        }
    }
});

这可能不是最有效的方法,但相当容易,并且在我的测试中完成了工作。查找parentNode属性应该在all browsers

中工作