javascript 删除键后重新索引javascript数组/对象
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Reindex javascript array / object after removing a key
提问by joedborg
For example:
例如：
var Cars = {
1: { "Make": "Honda",
"Model": "Accord",
"Color": "Red"
},
2: { "Make": "Honda",
"Model": "Civic",
"Color": "Silver"
},
3: { "Make": "Honda",
"Model": "Jazz",
"Color": "Yellow"
}
If I do a delete.Cars[2];I will be left with Cars[1] and Cars[3].
如果我做了一个，delete.Cars[2];我将剩下 Cars[1] 和 Cars[3]。
I need a way (JS or jQuery) so that when I delete a key, the object reindexes. So, in the example above, I'm left with Cars[1] and Cars[2] (which was Cars[3]).
我需要一种方法（JS 或 jQuery），以便当我删除一个键时，对象会重新索引。因此，在上面的示例中，我只剩下 Cars[1] 和 Cars[2]（即 Cars[3]）。
采纳答案by Elzo Valugi
That is because you dont need the keys for the array.
那是因为您不需要数组的键。
var Cars = [
{
"Make": "Honda",
"Model": "Accord",
"Color": "Red"
},{
"Make": "Honda",
"Model": "Civic",
"Color": "Silver"
},{
"Make": "Honda",
"Model": "Jazz",
"Color": "Yellow"
}
];
alert(Cars[1]['Make']); // Honda
回答by Marc Uberstein
You can have a look at this:
你可以看看这个：
Array: Javascript - Reindexing an array
Object: Algorithm to re-index an array of objects after insertion or drag 'n' drop order change
对象： 在插入或拖动“n”放置顺序更改后重新索引对象数组的算法
It should do the trick :)
它应该可以解决问题:)
Referencing other developers in this thread, and myself, it will be better to use an Array.
参考该线程中的其他开发人员和我自己，最好使用Array。
