A Karma plugin. Convert HTML files into JS strings to serve them in a script tag.


Preprocessor for converting HTML files into JS strings.

Note: If you are using AngularJS, check out karma-ng-html2js-preprocessor.

This plugin ships with Karma by default, so you don't need to install it, it should just work ;-)

The easiest way is to keep karma-html2js-preprocessor as a devDependency in your package.json.

  "devDependencies": {
    "karma": "~0.10",
    "karma-html2js-preprocessor": "~0.1"

You can simple do it by:

npm install karma-html2js-preprocessor --save-dev

Following code shows the default configuration...

// karma.conf.js 
module.exports = function(config) {
    preprocessors: {
      '**/*.html': ['html2js']
    files: [

This preprocessor converts HTML files into JS strings and publishes them in the global window.__html__, so that you can use these for testing DOM operations.

For instance this template.html...


... will be served as template.html.js:

window.__html__ = window.__html__ || {};
window.__html__['template.html'] = '<div>something</div>';

See the end2end test for a complete example.

For more information on Karma see the homepage.