a = [ {"id":"1"}, {"id":"2"} ] b = [ {"id":"3"}, {"id":"4"} ] a = a.concat(b)
结果：
a = [ {"id":"1"}, {"id":"2"}, {"id":"3"}, {"id":"4"} ]
微信小程序合并两个json对象
原文：https://www.cnblogs.com/benbencyb/p/9084474.html
