This time I will bring you the JavaScript code to highlight text. What are the precautions for using JavaScript to highlight text? The following is a practical case. Let’s take a look. one time.
There are many JQuery third-party libraries that can implement the function of highlighting text, but I prefer to use the following small piece of JavaScript code to achieve this function. It It is very short and can be flexibly modified according to my needs, and I can define the highlight style myself. The following two functions can help you create your own text highlighting plug-in.
function highlight(text, words, tag) { // Default tag if no tag is provided tag = tag || 'span'; var i, len = words.length, re; for (i = 0; i < len; i++) { // Global regex to highlight all matches re = new RegExp(words[i], 'g'); if (re.test(text)) { text = text.replace(re, '<'+ tag +' class="highlight">$&</'+ tag +'>'); } } return text; }
You will also need to cancel the highlighted function:
function unhighlight(text, tag) { // Default tag if no tag is provided tag = tag || 'span'; var re = new RegExp('(<'+ tag +'.+?>|<\/'+ tag +'>)', 'g'); return text.replace(re, ''); }
How to use:
$('p').html( highlight( $('p').html(), // the text ['foo', 'bar', 'baz', 'hello world'], // list of words or phrases to highlight 'strong' // custom tag));
I believe you have mastered the method after reading the case in this article. Please pay attention for more exciting things. php Chinese websiteOther related articles!
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