1 var arr1 = ['a','c','d','b'];
2 console.log(arr1.sort()); // 返回 ['a','b','c','d'];
3 console.log(arr1); // 返回 ['a','b','c','d']; 原数组被修改
4 var arr2 = [41,23,50,3];
5 console.log(arr2.sort()); // 23, 3, 41, 50
6
7 arr2.sort(function(a, b) {
8 return a-b; // 升序
9 // return b-a; //降序
10 });
11 console.log(arr2);
// 合并数组并且从小到大排列
function sortMixArr(arr1, arr2) {
var arr = arr1.concat(arr2);
return arr.sort(function(a,b) {
return a-b;
});
}
var arr1 = [1,3,2];
var arr2 = [3,5,4];
console.log(sortMixArr(arr1, arr2)); // 1,2,3,4,5,6
