list:[
0:Array(n)
old:[
0:{id: 31, productName: "Old123", stockPrice: 20, }
1:{id: 32, productName: "Old123", stockPrice: 10, }
...
],
new:[
0:{id: 33, productName: "new123", stockPrice: 20, }
1:{id: 34, productName: "new123", stockPrice: 10, }
...
],
1:Array(n)
old:[
0:{id: 35, productName: "Old123", stockPrice: 20, }
1:{id: 36, productName: "Old123", stockPrice: 10, }
...
],
new:[
0:{id: 37, productName: "new123", stockPrice: 20, }
1:{id: 38, productName: "new123", stockPrice: 10, }
...
],
...
]
there is a nested array. I"m going to push the contents of old to a new array oldlist how to push the contents of new to newlist
oldlist:[
0:[
0:{id: 31, productName: "Old123", stockPrice: 20, }
1:{id: 32, productName: "Old123", stockPrice: 10, }
...
],
1:[
0:{id: 35, productName: "Old123", stockPrice: 20, }
1:{id: 36, productName: "Old123", stockPrice: 10, }
...
],
...
]
newList:[
0:[
0:{id: 33, productName: "new123", stockPrice: 20, }
1:{id: 34, productName: "new123", stockPrice: 10, }
...
],
1:[
0:{id: 37, productName: "new123", stockPrice: 20, }
1:{id: 38, productName: "new123", stockPrice: 10, }
...
],
...
]
I traverse list, then traverse old and new, respectively, and push to get an array like this
oldlist:[
0:{id: 31, productName: "Old123", stockPrice: 20, }
1:{id: 32, productName: "Old123", stockPrice: 10, }
2:{id: 35, productName: "Old123", stockPrice: 20, }
3:{id: 36, productName: "Old123", stockPrice: 10, }
...
]
the ps: system requires you to modify the content of the picture and find a new problem by changing it-- |