angular-input-highlight

This directive allows to highlight a text in textarea by regular expression or substring.

Additionaly it tracks position of all highlighter fragments. So you can use it for positioning other overlay elements like tooltips.

• No external dependencies
• No extra markup (uses background image)
• No stylesheets

Please see demo

Installation

Get it with Bower bower i angular-input-highlight or with npm npm i angular-input-highlight

Usage

<textarea ng-model="..." 
  highlight="format"
  highlight-onchange="list($markers)"></textarea>

where matches is a map of Color - RegExp/String pairs. Color string should be whatever suites CSS color value, e.g.

format = {
   'red'             : /\d+/g,
   '#00ff00'         : /@[a-z0-9]/ig,
   'rgba(0,0,1,0.5)' : 'hello'
}

Limitations

• You can apply it only to textarea. In some cases input[type=text] could work but there is no way to track text scrolling inside it
• If target textarea is resizable then horizontal resizing will be disabled by directive
• IE9+, also you may need to explicitly define font-family style property for textarea in IE.

Contibuting

Fill free to suggest improvements. Run npm run-script dev to mess with the code.