如何将两个json合并成一个

//调用方法：

var targetObject = [{name:"11",age:11}];

var sourceObject = [{name:"22",age:22}];

var result = $.extend(true,targetObject,sourceObject);

//手写拼接：

var str1=[{name:"11",age:11}];

var str2=[{name:"22",age:22}];

var str3 = [];

for (var i = 0; i < str1.length; i++) {

    str3.push(str1[i]);

}

for (var i = 0; i < str2.length; i++) {

    str3.push(str2[i]);

}

--------------

var str3 = str1.concat(str2);