一、concat()：连接两个或更多数组
var arr1 = new Array("1","2","3");
var arr2 = new Array("4","5","6");
console.log(arr1.concat(arr2)); //输出结果：["1", "2", "3", "4", "5", "6"]
二、pop()：删除并返回数组最后一个元素
var arr = new Array("1","2","3");
console.log(arr.pop()); //输出结果：3
三、shift()：删除并返回数组第一个元素
var arr = new Array("1","2","3");
console.log(arr.shift()); //输出结果：1
四、push()：在数组最后添加一个或多个元素
var arr = new Array("1","2","3");
console.log(arr.push("4","5","6")); //输出结果：6
注：返回值为新数组长度
五、unshift()：在数组开头添加一个或多个元素
var arr = new Array("1","2","3");
console.log(arr.unshift("4","5","6")); //输出结果：6
注：返回值为新数组长度
六、splice()：删除并添加新元素
splice("添加元素的位置","从添加位置开始删除元素的个数【0为不删除】","要添加的元素【不填时相当于只删除元素】")
var arr = new Array("1","2","3");
console.log(arr.splice(1,1,4)); //输出结果：2
console.log(arr.splice(1,2)); //输出结果：2,3
注：返回值为删除的元素
七、reverse()：数组按下标倒叙排列
var arr = new Array("1","0","3");
console.log(arr.reverse()); //输出结果：["3", "0", "1"]
八、sort()：数组元素排序
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()); //输出结果：[0, 1, 3]
console.log(arr2.sort()); //输出结果：["0", "1", "3"]
console.log(arr3.sort()); //输出结果：["a", "b", "c"]
console.log(arr4.sort()); //输出结果：["Z", "a", "z"]
console.log(arr5.sort()); //输出结果：[2, "Z", "a"]
八、slice()：返回数组中指定元素
slice("起始位置[为负值时反向开始，如-1代表最后一个元素]","结束位置[不填时为从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)); //输出结果：["3", "4", "5"]
注：截取时不包括最后一位
九、join()：数组转成字符串并用制定字符连接
var arr = new Array("a","b","c");
console.log(arr.join()); //输出结果：a,b,c
console.log(arr.join("+")); //输出结果：a+b+c
十、toString()：数组转字符串
var arr = new Array("a","b","c");
console.log(arr.toString()); //输出结果：a,b,c
