Javascript：遍历包含对象的嵌套数组

Question

I have a tow arrays that contain objects I want to compare to find unmatched values from the objects and return the object if contain unmatched value but I'm confused I get wrong value any help or idea it's my code

 var firstarry=[{'name':'alex','age':22,'numbersOne':['111','222','333','444','555'],'location':'iq'},{'name':'jan','age':33,'numbersOne':['111','222','333','444'],'location':'in'}]; var secondarray=[{'name':'aga','age':12,'numbersTwo':['111','222','333','444'],'location':'usa'},{'name':'jan','age':35,'numbersTwo':['111','222','333','444'],'location':'uk'}]; var un_mached_rows=[]; var tmp_recorder={}; firstarry.forEach(function(firstArrayElements){ if(firstArrayElements.hasOwnProperty('numbersOne')){ firstArrayElements.numbersOne.forEach(function(numberOneElements){ secondarray.forEach(function(secondArrayElements){ if(secondArrayElements.hasOwnProperty('numbersTwo')){ secondArrayElements.numbersTwo.forEach(function(numbersTwoElements){ if(numberOneElements!=numbersTwoElements){ tmp_recorder.name = firstArrayElements.name; tmp_recorder.age = firstArrayElements.age; tmp_recorder.location = firstArrayElements.location; tmp_recorder.numbers = numberOneElements; un_mached_rows.push(tmp_recorder); tmp_recorder; } }); } }); }); } }); console.log(un_mached_rows); 

it should return the un_mached_rows=[{'name':'alex','age':22,'numbers':'555'}] but now it return 56 wrong record

Answer 1

You have a pretty big logic error in your routine.

You basically are comparing each element of the first array, with each element of the second array.... and even if the first array matches 1 element in the first array it won't match the rest so you get every other element of array 2 added to your results... IE:

array1 = 1,2 array2 = 1,2,3

First outer loop value from array1 is 1....

Looping through array2 first time through the inner loop array2 element is 1 so 1=1 and they match.... so nothing is added to your result, however on loop 2 and 3 of the inner loop 1 will not match 2 or 3, so they are both added to the result array...

Then the outer loop value changes to 2 and you get the same behavior.