如何从angularjs中的对象数组中删除对象

Question

我有一个对象数组，想从该数组中删除一个对象：

var objectArray = [{"id":"John Doe","label":"John Doe","shape":"image","image":"app/data/img/user_icon.png","color":{"background":"#db630d","border":"#7c3400"},"level":0},{"id":"JavaScript","label":"JavaScript","size":30,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"C#","label":"C#","size":40,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"css","label":"css","size":40,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"develop","label":"develop","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2},{"id":"programming","label":"programming","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2},{"id":"frontend","label":"frontend","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2}]

var singleNode = {"id":"frontend","label":"frontend","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2}

我想从上述对象数组中删除该对象。如何使用angularjs或javascript做到这一点？

Answer 1

如果每个对象的id是唯一的，则可以使用数组filter 。

将id视为唯一

 var objectArray = [{"id":"John Doe","label":"John Doe","shape":"image","image":"app/data/img/user_icon.png","color":{"background":"#db630d","border":"#7c3400"},"level":0},{"id":"JavaScript","label":"JavaScript","size":30,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"C#","label":"C#","size":40,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"css","label":"css","size":40,"shape":"dot","color":{"background":"#00637c"},"level":1},{"id":"develop","label":"develop","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2},{"id":"programming","label":"programming","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2},{"id":"frontend","label":"frontend","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2}] var singleNode = {"id":"frontend","label":"frontend","size":40,"shape":"box","color":{"background":"#65f759","border":"#65f759"},"level":2} var filteredArray = objectArray.filter(function(item){ return item.id !== "frontend"; }); console.log(filteredArray) 

Answer 2

let index = objectArray.findIndex(object => object.id === singleNode.id);
if (index != -1) {
    objectArray.splice(index, 1);
}

Answer 3

首先，找到要删除的元素的index ：

var array = [2, 5, 9];
var index = array.indexOf(5);

然后使用splice将其移除：

if (index > -1) {
    array.splice(index, 1);
}