方法一（Js）：A.concat(B)

示例一：　 

var a = ["a", "b", "c"];
var b = ["b", "c", "d"];
var c = a.concat(b);
console.log("合并：",c);
console.log("长：",c.length);
var d = $.unique(c);          //jquery中的方法
console.log("去重：",d);
console.log("长：",d.length);

输出：

 示例二：

var aObj = [
    { name : "小明",age : "21", sex : "男"},
    { name : "小红",age : "20", sex : "女"},
    { name : "张三",age : "24", sex : "男"},
    { name : "思思",age : "22", sex : "女"},
];
var bObj = [
    { name : "韩雪",age : "21", sex : "女"},
    { name : "飘香",age : "20", sex : "男"},
    { name : "徐元",age : "24", sex : "男"},
    { name : "倾城",age : "23", sex : "女"},
];
var cObj = aObj.concat(bObj);
console.log("cObj",cObj);

输出：

方法二（jQuery）：$.merge(A,B)

示例一： 

var a = ["a", "b", "c"];
var b = ["b", "c", "d"];
var c = $.merge(a,b);
console.log("合并：",c);
console.log("长：",c.length);
var d = $.unique(c);  //jquery中的方法
console.log("去重：",d);
console.log("长：",d.length);

输出：

示例二：

var aObj = [
    { name : "小明",age : "21", sex : "男"},
    { name : "小红",age : "20", sex : "女"},
    { name : "张三",age : "24", sex : "男"},
    { name : "思思",age : "22", sex : "女"},
];
var bObj = [
    { name : "韩雪",age : "21", sex : "女"},
    { name : "飘香",age : "20", sex : "男"},
    { name : "徐元",age : "24", sex : "男"},
    { name : "倾城",age : "23", sex : "女"},
];
var cObj = $.merge(aObj,bObj)
console.log("cObj",cObj);

输出：