Facebook Like Hashtag Highlighting Plugin with jQuery - hashtags.js

hashtags.js is a very small small jQuery plugin used to highlight text in the textarea when a #hashtag typed, as you seen on Facebook.

See also:

• jQuery Plugin To Generate Links For URLs, Mentions and Hashtags - Linky
• Parse Twitter Usernames, Hashtags and URLs Using jQuery

How to use it:

1. Put the jQuery hashtags.js after jQuery library but before you close the body tag.

<script src="//code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="js/jquery.hashtags.js"></script>

2. Call the hashtags() function on the target textarea.

$("textarea").hashtags();

3. Style the highlighted hashtags in the CSS.

.jqueryHashtags .highlighter {
  white-space: pre-wrap;
  color: transparent;
  overflow: hidden;
  position: absolute;
  padding-left: 7px;
  padding-top: 5px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 20px;
}

.jqueryHashtags .theSelector {
  background-color: transparent;
  position: relative;
  direction: ltr;
  font-size: 14px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  resize: none !important;
  -webkit-transition: height 0.2s;
  border: 1px solid #cccccc;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px;
  padding: 4px 6px;
  vertical-align: middle;
  min-height: 48px !important;
  line-height: 20px;
}

.jqueryHashtags .hashtag {
  background: -webkit-linear-gradient(#dce6f8, #bdcff1);
  border-radius: 2px;
  box-shadow: 0 0 0 1px #a3bcea;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 20px;
}

Changelog:

2018-06-29

• Chinese error modifyed

2017-05-31

• including support for underscores in hashtags

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This awesome jQuery plugin is developed by lookapanda. For more Advanced Usages, please check the demo page or visit the official website.