Web-automation.ru

var obj = {“1″:5,”2″:7,”3″:0,”4″:0,”5″:0,”6″:0,”7″:0,”8″:0,”9″:0,”10″:0,”11″:0,”12”:0}
var result = Object.keys(obj).map(function(key) {
return [Number(key), obj[key]];
});

console.log(result);