删除JSON的第一个元素 [英] Remove First element of JSON

问题描述

在我的JSON下面，我想删除其项目的第一行，例如:

Her s the below my JSON is nd I want to remove the first line of its items, like coming as:

data.items = {"username":"usr1","profile": "usr2", "items":[{"s": "1","f": "usr2","m": "hey ebteween how u doing","fr":"usr1"}]} 

更新#1

$.each(data.items, function(i,item){
        data.items.item.shift();
   }

想要这样

{"username":"usr1","profile": "usr2", "items":[]}

我正在尝试使用data.items.slice(1)方法，但是由于某种原因它不起作用:

I am trying using the data.items.slice(1) method but somehow it is not working:

更新#2:

我通过添加shift()尝试了代码，但是在控制台中我收到了:

i tried the code by adding the shift() but in console i received:

console.log(data.items); data.items.shift();

console.log(data.items);data.items.shift();

[Object { s="1", f="usr1", m="m", more...}]

但是实际上它并没有从json对象中删除该元素

but actually it did not removed the element from the json object

推荐答案

要删除元素，可以使用删除:

to delete an element, you could use delete:

// it'll delete the first element of the json
delete data.items[0];

如果要删除指定密钥，则必须使用密钥名称:

if you want to delete a specify key, you have to use key name:

// delete the username key:
delete data.items["username"];

在您的情况下，您可以通过这种方式再次设置密钥:

in your case you could just set again your key in this way:

data.items["items"] = [];

您已将密钥设置为空数组

you have set your key with an empty array

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