如果要编写它以便可以接受任意数量的数组，而不仅仅是2个，则可以利用arguments，并执行以下操作：
var json1 = [{id:1,name:'aaa'},{id:5,name:'ccc'},{id:3,name:'bbb'}];var json2 = [{id:3,parameter1:'x', parameter2:'y', parameter3:'z'}, {id:1,parameter1:'u', parameter2:'v', parameter3:'w'}, {id:5,parameter1:'q', parameter2:'w', parameter3:'e'}];function joinObjects() { var idMap = {}; // Iterate over arguments for(var i = 0; i < arguments.length; i++) { // Iterate over individual argument arrays (aka json1, json2) for(var j = 0; j < arguments[i].length; j++) { var currentID = arguments[i][j]['id']; if(!idMap[currentID]) { idMap[currentID] = {}; } // Iterate over properties of objects in arrays (aka id, name, etc.) for(key in arguments[i][j]) { idMap[currentID][key] = arguments[i][j][key]; } } } // push properties of idMap into an array var newArray = []; for(property in idMap) { newArray.push(idMap[property]); } return newArray;}var json3 = joinObjects(json1, json2);这是一个工作中的prepen。
