Js two methods to sort, easy to use

1, the sort () method, I like the simple violence.

var arr = [21,100,-6,99,1]
function sortNum(a,b){
    return a-b;  
}
arr.sort(sortNum);
console.log(arr);

2, ordinary bubble sort method, compared to the original easy to understand.

var arr = [210,100,6,99,1,12];
var timeData;
for(var i in arr){
    for(var y in arr){
        if(arr[i]<arr[y]){
            times = arr[i];
            arr[i] = arr[y];
            arr[y] = times;
        }
    }
}
console.log(arr);

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