occurances of a string

.js

// Given a string of text, output the characters ordered from 
// highest to lowest, with each character paired with 
// the number of times it occurs.

function displayCharOccuraces(text) {
  window.charObj = {}
  window.arr = []
  
  for (var i = 0; i < text.length; i++) {
  	if (!charObj[text[i]]) {
	  	charObj[text[i]] = 1
  	} else {
  		charObj[text[i]]++
  	}
  }

  for (key in charObj) {
    arr.push([key,charObj[key]])
  }

  arr.sort(function (a, b) {
    return a[1] < b[1]
  })

  window.arr.forEach(function (element) {
    console.log(element[0], element[1])
  })
}



var x = displayCharOccuraces("banaaaaaaakkakkkaanaz!")
console.log(x)