nanoquery

Can replace jquery in many cases.

Syntax

nano(selector) - select and return the first matching element

nano(selector, callback) - perform a callback on all selected elements

nano(selector, event, handler) - add event handler to all selected elements

Examples

Single argument:

nano(".js-horse").innerHTML = "Horse text";

Two arguments:

nano(".js-horse", function(horseElement) {
    horseElement.innerHTML = "Another text";
});

Three arguments:

nano(".js-horse", "touchmove", function(event) {
    this.innerHTML = "Touched horse";
});

Full source code

/*
    nanoquery
    Syntax:
    nano(selector) - select and return the first matching element
    nano(selector, callback) - perform a callback on all selected elements
    nano(selector, event, handler) - add event handler to all selected elements
*/

window.nano=window.nanoquery=function(s,c,x){var r=document.querySelectorAll(s);return r.length?(c?[].forEach.call(r,x?function(e){e.addEventListener(c,x,!!0);}:c):r[0]):null;};

Credits

Guest at https://bitbin.it/T1eVO0Ur/ (2013)