理解的 hash

hash.js

var obj = {
        1:'person1',
        2:'person2',
        5:'person3',
        9:'person4',
        12:'person5',
        9:'person6'
    },
    tmpArray = [];

for(key in obj){
    tmpArray.push(key);
}

tmpArray = tmpArray.sort(function(a,b){
    return b-a
});

for(var i=0, len=tmpArray.length; i<len;i++){
    console.log('#' + i + ': ', obj[+tmpArray[i]], ' score: ' + tmpArray[i]);
};