<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var arr2 = [7,6,15,4,13,2,1];
var aaa = sort(arr2, function (a,b) {
return b-a;
});
console.log(aaa);
function sort(arr,fn){
for(var i=0;i<arr.length-1;i++){
for(var j=0;j<arr.length-1;j++){
if(fn(arr[j],arr[+j1])>0){
var temp = arr[j];
arr[j] = arr[j+1];
arr[j+1] = temp;
}
}
}
return arr;
}
</script>
</body>
</html>
原文：http://www.cnblogs.com/sj1988/p/6579832.html