nic*_*ckf 95 html javascript jquery
我基本上需要突出显示一个文本块中的特定单词.例如,假装我想在本文中突出显示"dolor"这个词:
<p>
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
</p>
<p>
Quisque bibendum sem ut lacus. Integer dolor ullamcorper libero.
Aliquam rhoncus eros at augue. Suspendisse vitae mauris.
</p>
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如何将上述内容转换为以下内容:
<p>
Lorem ipsum <span class="myClass">dolor</span> sit amet, consectetuer adipiscing elit.
</p>
<p>
Quisque bibendum sem ut lacus. Integer <span class="myClass">dolor</span> ullamcorper
libero. Aliquam rhoncus eros at augue. Suspendisse vitae mauris.
</p>
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这有可能与jQuery?
编辑:正如Sebastian 指出的那样,没有jQuery这很有可能 - 但是我希望有一个特殊的jQuery方法可以让你在文本本身上做选择器.我已经在这个网站上大量使用jQuery了,所以把所有内容都包含在jQuery中会让事情变得更加整洁.
mla*_*sen 80
尝试突出显示:JavaScript文本突出显示jQuery插件.!警告 - 此页面上提供的源代码包含加密货币挖掘脚本,要么使用下面的代码,要么从网站上的下载中删除挖掘脚本.!
/*
highlight v4
Highlights arbitrary terms.
<http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
MIT license.
Johann Burkard
<http://johannburkard.de>
<mailto:jb@eaio.com>
*/
jQuery.fn.highlight = function(pat) {
function innerHighlight(node, pat) {
var skip = 0;
if (node.nodeType == 3) {
var pos = node.data.toUpperCase().indexOf(pat);
if (pos >= 0) {
var spannode = document.createElement('span');
spannode.className = 'highlight';
var middlebit = node.splitText(pos);
var endbit = middlebit.splitText(pat.length);
var middleclone = middlebit.cloneNode(true);
spannode.appendChild(middleclone);
middlebit.parentNode.replaceChild(spannode, middlebit);
skip = 1;
}
}
else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
for (var i = 0; i < node.childNodes.length; ++i) {
i += innerHighlight(node.childNodes[i], pat);
}
}
return skip;
}
return this.length && pat && pat.length ? this.each(function() {
innerHighlight(this, pat.toUpperCase());
}) : this;
};
jQuery.fn.removeHighlight = function() {
return this.find("span.highlight").each(function() {
this.parentNode.firstChild.nodeName;
with (this.parentNode) {
replaceChild(this.firstChild, this);
normalize();
}
}).end();
};
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/*
* jQuery Highlight plugin
*
* Based on highlight v3 by Johann Burkard
* http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html
*
* Code a little bit refactored and cleaned (in my humble opinion).
* Most important changes:
* - has an option to highlight only entire words (wordsOnly - false by default),
* - has an option to be case sensitive (caseSensitive - false by default)
* - highlight element tag and class names can be specified in options
*
* Usage:
* // wrap every occurrance of text 'lorem' in content
* // with <span class='highlight'> (default options)
* $('#content').highlight('lorem');
*
* // search for and highlight more terms at once
* // so you can save some time on traversing DOM
* $('#content').highlight(['lorem', 'ipsum']);
* $('#content').highlight('lorem ipsum');
*
* // search only for entire word 'lorem'
* $('#content').highlight('lorem', { wordsOnly: true });
*
* // don't ignore case during search of term 'lorem'
* $('#content').highlight('lorem', { caseSensitive: true });
*
* // wrap every occurrance of term 'ipsum' in content
* // with <em class='important'>
* $('#content').highlight('ipsum', { element: 'em', className: 'important' });
*
* // remove default highlight
* $('#content').unhighlight();
*
* // remove custom highlight
* $('#content').unhighlight({ element: 'em', className: 'important' });
*
*
* Copyright (c) 2009 Bartek Szopka
*
* Licensed under MIT license.
*
*/
jQuery.extend({
highlight: function (node, re, nodeName, className) {
if (node.nodeType === 3) {
var match = node.data.match(re);
if (match) {
var highlight = document.createElement(nodeName || 'span');
highlight.className = className || 'highlight';
var wordNode = node.splitText(match.index);
wordNode.splitText(match[0].length);
var wordClone = wordNode.cloneNode(true);
highlight.appendChild(wordClone);
wordNode.parentNode.replaceChild(highlight, wordNode);
return 1; //skip added node in parent
}
} else if ((node.nodeType === 1 && node.childNodes) && // only element nodes that have children
!/(script|style)/i.test(node.tagName) && // ignore script and style nodes
!(node.tagName === nodeName.toUpperCase() && node.className === className)) { // skip if already highlighted
for (var i = 0; i < node.childNodes.length; i++) {
i += jQuery.highlight(node.childNodes[i], re, nodeName, className);
}
}
return 0;
}
});
jQuery.fn.unhighlight = function (options) {
var settings = { className: 'highlight', element: 'span' };
jQuery.extend(settings, options);
return this.find(settings.element + "." + settings.className).each(function () {
var parent = this.parentNode;
parent.replaceChild(this.firstChild, this);
parent.normalize();
}).end();
};
jQuery.fn.highlight = function (words, options) {
var settings = { className: 'highlight', element: 'span', caseSensitive: false, wordsOnly: false };
jQuery.extend(settings, options);
if (words.constructor === String) {
words = [words];
}
words = jQuery.grep(words, function(word, i){
return word != '';
});
words = jQuery.map(words, function(word, i) {
return word.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
});
if (words.length == 0) { return this; };
var flag = settings.caseSensitive ? "" : "i";
var pattern = "(" + words.join("|") + ")";
if (settings.wordsOnly) {
pattern = "\\b" + pattern + "\\b";
}
var re = new RegExp(pattern, flag);
return this.each(function () {
jQuery.highlight(this, re, settings.element, settings.className);
});
};
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And*_*ges 41
function hiliter(word, element) {
var rgxp = new RegExp(word, 'g');
var repl = '<span class="myClass">' + word + '</span>';
element.innerHTML = element.innerHTML.replace(rgxp, repl);
}
hiliter('dolor');
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dud*_*ude 29
为什么从头开始构建自己的突出显示功能可能是一个坏主意的原因是因为你肯定会遇到其他人已经解决的问题.挑战:
innerHTML
)听起来很复杂?如果你想要一些功能,比如忽略突出显示,变音符号映射,同义词映射,iframe内搜索,分离词搜索等一些元素,这就变得越来越复杂.
使用现有的,实现良好的插件时,您不必担心上面提到的东西.Sitepoint上的第10篇jQuery文本荧光笔插件比较了流行的荧光笔插件.这包括来自这个问题的答案插件.
mark.js是一个用纯JavaScript编写的插件,但也可以作为jQuery插件使用.它的开发目的是提供比其他插件更多的机会,可以选择:
或者你可以看到这个小提琴.
用法示例:
// Highlight "keyword" in the specified context
$(".context").mark("keyword");
// Highlight the custom regular expression in the specified context
$(".context").markRegExp(/Lorem/gmi);
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它是免费的,并在GitHub上开发了开源(项目参考).
小智 11
这是一个忽略并保留案例的变体:
jQuery.fn.highlight = function (str, className) {
var regex = new RegExp("\\b"+str+"\\b", "gi");
return this.each(function () {
this.innerHTML = this.innerHTML.replace(regex, function(matched) {return "<span class=\"" + className + "\">" + matched + "</span>";});
});
};
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