utilise/debounce.js

Lean JavaScript Utilities as Micro-libraries

var is = require('./is')

module.exports = function debounce(d){
  var pending, wait = is.num(d) ? d : 100

  return is.fn(d) 
       ? next(d)
       : next

  function next(fn){
    return function(){
      var ctx = this, args = arguments
      pending && clearTimeout(pending)
      pending = setTimeout(function(){ fn.apply(ctx, args) }, wait)
    }
  }
  
}