What

This is a tiny (4kB minified) and IE9+ compatible library to interact with the DOM using a jQuery-like syntax.

Why

I love jQuery. But sometimes I only need to do a few things using a chainable|comfortable syntax. Frameworks like Angular, React or Vuejs may be oversized for a simple page with little interactivity.

In this case jquasi might help. With this 4kB library you can do something like this:

$(function() {
    $('body').append(
        $('<a/>')
            .attr("href","#")
            .html("Simple link")
            .on('click', function(e) {
                $(this)
                    .toggleClass('a-clicked')
                    .html("clicked!");
                return false;
            })
    );
});

Of course jquasi is not a complete replacement of jQuery, but a subset with a compatible syntax/API. So you can start your project with jquasi and later - if you miss some features - switch to jQuery without changing anything in your code!

Repository structure

• The spec folder contains tests that work with both jQuery and jquasi.
• The dist folder contains the minified version (3k) of jquasi.

API / supported features

The API is a subset of the jQuery API.

• ready: $(function() {/* document is ready now */})
• create: $('<div/>')
• selectors: $('.classname[attr="value"]). This use the document.querySelectorAll
• each: $('div').each(function() {console.log(this)})
• (add|remove|toggle|has)Class $('div').addClass("class-for-all-div")
• attr: $('div').attr("data-attr", "value")
• .html()
• append: $('body').append($('<div/>'))
• parent: $('.my-div').parent().parent()
• remove, clone, empty
• get: get()
• find: find()
• listeners $('body').on('click',function() {})
• event delegation: $('body').on('click','.only-this',function() {})
• remove listeners $('body').off('click')
• namespaced events $('body').on('click.my-custom-namespace')
• remove namespaced events $('body').off('.my-custom-namespace')
• remove all delegated event handlers $('body').off('click', '**')
• .fn as prototype shortcut

From 2.0

• .html(content) supports now script tag execution.
• .attr(name) returns undefined rather than null respecting jQuery compatibility
• .css() for simple a minimal styling
• removeAttr: $('div').removeAttr("data-attr")

This API is a good balance of lightness and power.

Extending jquasi / adding missing functionalities

If you are missing just a few methods and don't want to switch from jquasi to jQuery, you can extend jquasi within your project as shown in this example:

$.fn.myMissingFunc = function() {
    // do stuff here
}

$('div').css("backgroundColor","red");

Contributing

Fixes and contributions are welcome.

If you wrote an extension in your project and believe it could be of general interest, feel free to open a Pull Request to discuss its inclusion in the main project.

Consider that this library must remain jquery compatible and as small as possible.

To set up the development environment, clone this repo and run:

npm install

to download all dependencies needed for compilation and testing inside the src folder.

To test your changes run:

npm test

to run the tests using chrome headless OR open the spec/standalone/SpecRunner.html file with your favourite browser.

If you are adding new functionalities, please write the corresponding tests as well.

To create the minified version of jquasi run:

npm run build