nanoQuery.JS - efficient JQuery replacement in one line

SUBMITTED BY: Guest

DATE: Jan. 31, 2013, 12:02 p.m.

FORMAT: JavaScript

SIZE: 480 Bytes

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/*
 * nanoQuery function (can replace jQuery in 90% cases) 
 * Syntax:
 * _(selector) - select and return the first matching element
 * _(selector, callback) - perform a callback on all selected elements
 * _(selector, event, handler) - add event handler to all selected elements
 */

window._=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}