js數組排序

web開發中，獲取的json數組對象，有時候需要按不同的字段排序，爲了減少對服務器請求的次數，可以使用js的數組排序方法sort()對數組排序。

一.簡單的數字數組排序
    1.1 升序
        var array=[5,3,1,2,7,4];
        var resulet=array.sort();
        console.log(resulet);
        輸出結果：[1, 2, 3, 4, 5, 7]
    1.2 降序
        var array=[5,3,1,2,7,4];
        var resulet=array.sort().reverse();
        console.log(resulet);
        輸出結果：[7, 5, 4, 3, 2, 1]
二.簡單的英文單詞數組排序（按首個英文字母排序）
    2.1 升序
        var array=['call','hello','apple','open'];
        var resulet=array.sort();
        console.log(resulet);
        輸出結果：["apple", "call", "hello", "open"]
    2.2 降序
        var array=['call','hello','apple','open'];
        var resulet=array.sort().reverse();
        console.log(resulet);
        輸出結果：["open", "hello", "call", "apple"]
三.簡單的中文名數組按第一個字拼音排序，如果拼音相同，則按照筆畫排序
    3.1 升序
        var array=['李鵬','李彭','張奎','王航','林格'];
        function complete(x,y){
            return x.localeCompare(y,"zh");
        }
        var resulet=array.sort(complete);
        console.log(resulet);
        輸出結果：["李彭", "李鵬", "林格", "王航", "張奎"]
    3.2 降序
        var array=['李鵬','李彭','張奎','王航','林格'];
        function complete(x,y){
            return y.localeCompare(x,"zh");
        }
        var resulet=array.sort(complete);
        console.log(resulet);
        輸出結果：["張奎", "王航", "林格", "李鵬", "李彭"]
四.數組對象排序
    4.1按照數組對象age屬性升序
        var array=[ {"name":"張奎",age:19},
                    {"name":"王海",age:15},
                    {"name":"林英",age:17},
                    {"name":"李武",age:13}];
        var resulet=array.sort(complete);
        function complete(x,y){
            if(x.age>y.age){
                return 1;
            }else if(x.age<y.age){
                return -1;
            }else{
                return 0;
            }
        }
        console.log(resulet);   
        輸出結果：[ {"name":"李武",age:13},
                    {"name":"王海",age:15},
                    {"name":"林英",age:17},
                    {"name":"張奎",age:19}];  
    4.2按照數組對象age屬性降序
        var array=[ {"name":"張奎",age:19},
                    {"name":"王海",age:15},
                    {"name":"林英",age:17},
                    {"name":"李武",age:13}];
        var resulet=array.sort(complete);
        function complete(x,y){
            if(x.age>y.age){
                return -1;
            }else if(x.age<y.age){
                return 1;
            }else{
                return 0;
            }
        }
        console.log(resulet);   
        輸出結果：[ {"name":"張奎",age:19},
                    {"name":"林英",age:17},
                    {"name":"王海",age:15},
                    {"name":"李武",age:13}];