對象屬性排序和字符串排序

//自定義排序,對對象的屬性進行排序
let comparearr = [
    {name:"zhangsan",age:18},
    {name:"lisi",age:20},
    {name:"wangmazi",age:23}
]
function comparParsen(a,b){
    if(a.age>b.age){
        return -1;
    }
    if(a.age < b.age){
        return 1;
    }
    return 0;
}
console.log(comparearr.sort(comparParsen));


//字符串排序
let stringcompare = ["anna","Aready","may","Jan"];
stringcompare.sort(function(a,b){
    if(a.toLowerCase()<b.toLowerCase()){
        return -1;
    }
    if(a.toLowerCase()>b.toLowerCase()){
        return 1;
    }
    return 0;
});