1. 根据年龄大小排序
var arr = [
{name: '周一',age: '28'},
{name: '周二',age: '18'},
{name: '周二',age: '18'},
{name: '周二',age: '15'},
{name: '周二',age: '25'},
{name: '周二',age: '10'},
]
function sortId(a,b){
return a.age-b.age
}
arr.sort(sortId)
console.log(arr)
2.普通数字排序
var arr1 = [15, 8, 25, 3];
arr1.sort();
console.log(arr1);//[15, 25, 3, 8]