Vue Highlightable Input

Highlight and style specific words as you're typing.

Try it yourself

Install

npm install vue-highlightable-input --save

Usage

In your template add this:

<highlightable-input 
  highlight-style="background-color:yellow" 
  :highlight-enabled="highlightEnabled" 
  :highlight="highlight" 
  v-model="msg"
/>

In your component add this:

import HighlightableInput from "vue-highlightable-input"
export default {
  name: 'HelloWorld',
  components : {
    HighlightableInput
  },
  data() {
    return {
      msg: '',
      highlight: [
        {text:'chicken', style:"background-color:#f37373"},
        {text:'noodle', style:"background-color:#fca88f"},
        {text:'soup', style:"background-color:#bbe4cb"},
        {text:'so', style:"background-color:#fff05e"},
        "whatever",
        {start: 2, end: 5, style:"background-color:#f330ff"}
      ],
      highlightEnabled: true
    }
  },
}

Props

Name	Required	Type	Default	Description	Reactive
highlight	Yes	String or Array	null	The string or list of words to highlight. This can be a single string value, a RegExp or you can do an array of strings or RegExp or array of Highlight Objects or array of Range Objects.	Yes
highlightEnabled	No	Boolean	true	If true, will highlight the text	Yes
highlightStyle	No	String or Object	background-color:yellow	If no style is provided for text, this will act as the global styling for the highlight. Can also be a dictionary instead of string.	Yes
highlightDelay	No	Number	500	Determines how long in milliseconds to wait before processing the highlights. Setting this to a low value is fine for small text but setting it higher may improve performance significantly for larger text	Yes
caseSensitive	No	Boolean	false	If true, will treat highlight strings with case sensitivity. Can be overrided per highlight object.	Yes
value	No	String	null	Raw text value.	Yes
fireOn	No	String	keydown	The dom event on which the highlight event should be fired. This can be any event that the div content editable can handle.	No (only because the listener is being added in mounted)
fireOnEnabled	No	Boolean	true	If true, will process the highlights on the specified (or default) event.	No (only because the value is used in the mounted function)

Highlight Object

{
    text:'chicken', // Required
    style:"background-color:#f37373" // Optional
    caseSensitive: true // Optional defaults to False
}

Range Object

{
    start:1, // Required
    end: 9,  // Required
    style:"background-color:#f37373" // Optional
}

End must be greater than start. The range end is exlusive in other words ==> [start, end)

Events

Name	Description
@input	Just like a regular input html element you can use this to react to input events

Note, that you can also use v-model

Some notes

• This is not meant to be used for large scale text highlight because of how inefficient div contentEditable is and also the fact the algorithm I'm using is stupidly inefficient (try entering like a lot of text for highlighting)
• Good use cases for this are something like what wit.ai does (they probably have a more efficient algorithm though) for highlighting recognized entities on the fly.
• Let me know what other use cases you might have!

Why make this?

• I liked the way wit.ai does highlighting and I wanted to recreate that in Vue.
• Because I was bored and also had a similar problem at work (No, I wasn't bored at work! Quite the opposite actually.)
• Because I still know nothing about web development and I'm still a n00b. Roast me bro.
• Because it looks cool!

Credits

For the cool highlighter pen icon: Icons made by Freepik from Flaticon is licensed by Creative Commons BY 3.0

License

MIT