一、concat()：連接兩個或更多數組

var arr1 = new Array("1","2","3");

var arr2 = new Array("4","5","6");

console.log(arr1.concat(arr2)); //輸出結果：["1", "2", "3", "4", "5", "6"]

二、pop()：刪除并返回數組最后一個元素

var arr = new Array("1","2","3");

console.log(arr.pop()); //輸出結果：3

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三、shift()：刪除并返回數組第一個元素

var arr = new Array("1","2","3");

console.log(arr.shift()); //輸出結果：1

四、push()：在數組最后添加一個或多個元素

var arr = new Array("1","2","3");

console.log(arr.push("4","5","6")); //輸出結果：6

注：返回值為新數組長度

五、unshift()：在數組開頭添加一個或多個元素

var arr = new Array("1","2","3");

console.log(arr.unshift("4","5","6")); //輸出結果：6

注：返回值為新數組長度

六、splice()：刪除并添加新元素

splice("添加元素的位置","從添加位置開始刪除元素的個數【0為不刪除】","要添加的元素【不填時相當于只刪除元素】")

var arr = new Array("1","2","3");

console.log(arr.splice(1,1,4)); //輸出結果：2

console.log(arr.splice(1,2)); //輸出結果：2,3

注：返回值為刪除的元素

七、reverse()：數組按下標倒敘排列

var arr = new Array("1","0","3");

console.log(arr.reverse()); //輸出結果：["3", "0", "1"]

八、sort()：數組元素排序

var arr1 = new Array(1,0,3);

var arr2 = new Array("1","0","3");

var arr3 = new Array("a","c","b");

var arr4 = new Array("Z","z","a");

var arr5 = new Array("Z","a",2);

console.log(arr1.sort()); //輸出結果：[0, 1, 3]

console.log(arr2.sort()); //輸出結果：["0", "1", "3"]

console.log(arr3.sort()); //輸出結果：["a", "b", "c"]

console.log(arr4.sort());?//輸出結果：["Z", "a", "z"]

console.log(arr5.sort()); //輸出結果：[2, "Z", "a"]

八、slice()：返回數組中指定元素

slice("起始位置[為負值時反向開始，如-1代表最后一個元素]","結束位置[不填時為從起始位置截取到最后]")

var arr = new Array("1","2","3","4","5","6");

console.log(arr.slice(2,5)); //輸出結果：["3", "4", "5"]

注：截取時不包括最后一位

九、join()：數組轉成字符串并用制定字符連接

var arr = new Array("a","b","c");

console.log(arr.join()); //輸出結果：a,b,c

console.log(arr.join("+")); //輸出結果：a+b+c

十、toString()：數組轉字符串

var arr = new Array("a","b","c");

console.log(arr.toString()); //輸出結果：a,b,c

不常用：

1、valueof()：返回 數組 對象的原始值

2、toSource()：代表對象的源代碼

3、toLocalString()：轉換為本地數組，并返回結果