Highlight a DOM Element on Hover Like Web Inspectors | theroomjs

TheRoom is a Vanilla JavaScript plugin that allows you to define dom elements such as web inspectors.

Theroomjs can be accessed globally as theRoom. It is compatible with modern browsers like Google Chrome, Mozilla Firefox, Safari, Edge, and Internet Explorer.

How to make use of it:

Download and import the ‘theroom.js’ into the doc.

<script src="dist/theroom.min.js"></script>

Initialize the TheRoom and finished.


To create an info bar that shows the present HTML tag, and CSS ID/class.

var template="";
    template += "<div id=\"theroom-info\">";
    template += "  <span id=\"theroom-tag\"><\/span>";
    template += "  <span id=\"theroom-id\"><\/span>";
    template += "  <span id=\"theroom-class\"><\/span>";
    template += "<\/div>";
    template += "";
    template += "<style>";
    template += "  #theroom-info {";
    template += "    position: fixed;";
    template += "    bottom: 0;";
    template += "    width: 100%;";
    template += "    left: 0;";
    template += "    font-family: \"Courier\";";
    template += "    background-color: #ffffff;";
    template += "    padding: 10px;";
    template += "    color: #333333;";
    template += "    text-align: center;";
    template += "    box-shadow: 0px 4px 20px rgba(0,0,0,0.3);";
    template += "  }";
    template += "";
    template += "  #theroom-tag {";
    template += "    color: #C2185B;";
    template += "  }";
    template += "";
    template += "  #theroom-id {";
    template += "    color: #5D4037;";
    template += "  }";
    template += "";
    template += "  #theroom-class {";
    template += "    color: #607D8B;";
    template += "  }";
    template += "<\/style>";

var options = {
  template: template,
  showInfo: true

// initialize

More plugin choices with default values.

var options = {

    // namespace
    namespace: "theroom",

    // background color of the overlay
    bgcolor: "rgba(255,0,0,0.5)",

    // transition speed in milliseconds
    transitionSpeed: 200,

    // uses inline style attribute instead style
    useInline: true,

    // exclude these tags
    exceptions: [

Callback features are out there.

var options = {

    onStart: null,
    onStarting: null,
    onStop: null,
    onStopping: null,
    onClick: null,    

Highlight DOM Elements On Hover, javascript highlight element, mouseover event target, animate css3, theroomjs Plugin/Github


See Demo And Download

Official Website(hsynlms): Click Here

This superior jQuery/javascript plugin is developed by hsynlms. For extra Advanced usage, please go to the official website.

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