我知道以前也有人问过类似的问题,但这个问题有点不同。我有一个未命名对象的数组,其中包含一个命名对象的数组,我需要得到其中“name”为“string 1”的对象。下面是一个示例数组。

var array = [
    { name:"string 1", value:"this", other: "that" },
    { name:"string 2", value:"this", other: "that" }
];

更新:我应该早点说,但一旦我找到它,我想用一个编辑过的对象替换它。


当前回答

你可以使用npm中的查询对象。您可以使用筛选器搜索对象数组。

const queryable = require('query-objects');

const users = [
    {
      firstName: 'George',
      lastName: 'Eracleous',
      age: 28
    },
    {
      firstName: 'Erica',
      lastName: 'Archer',
      age: 50
    },
    {
      firstName: 'Leo',
      lastName: 'Andrews',
      age: 20
    }
];

const filters = [
    {
      field: 'age',
      value: 30,
      operator: 'lt'
    },
    {
      field: 'firstName',
      value: 'Erica',
      operator: 'equals'
    }
];

// Filter all users that are less than 30 years old AND their first name is Erica
const res = queryable(users).and(filters);

// Filter all users that are less than 30 years old OR their first name is Erica
const res = queryable(users).or(filters);

其他回答

考虑到您有以下片段:

var array = [
    { name:"string 1", value:"this", other: "that" },
    { name:"string 2", value:"this", other: "that" }
];

您可以使用以下函数来搜索项目

const search = what => array.find(element => element.name === what);

您可以检查是否找到了该项目。

const found = search("string1");
if (found) {
    console.log(found.value, found.other);
} else {
    console.log('No result found');
}

在ES6中,你可以使用Array.prototype。find(predicate, thisArg?)

array.find(x => x.name === 'string 1')

http://exploringjs.com/es6/ch_arrays.html#_searching-for-array-elements https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/find

然后替换该对象(并使用另一个很酷的ES6方法填充),你可以这样做:

let obj = array.find(x => x.name === 'string 1');
let index = array.indexOf(obj);
array.fill(obj.name='some new string', index, index++);

您是否在对象列表中查找跨项目的通用搜索(筛选器)而不指定项目键

输入

var productList = [{category: 'Sporting Goods', price: '$49.99', stocked: true, name: 'Football'}, {category: 'Sporting Goods', price: '$9.99', stocked: true, name: 'Baseball'}, {category: 'Sporting Goods', price: '$29.99', stocked: false, name: 'Basketball'}, {category: 'Electronics', price: '$99.99', stocked: true, name: 'iPod Touch'}, {category: 'Electronics', price: '$399.99', stocked: false, name: 'iPhone 5'}, {category: 'Electronics', price: '$199.99', stocked: true, name: 'Nexus 7'}]
function customFilter(objList, text){
if(undefined === text || text === '' ) return objList;
return objList.filter(product => {
    let flag;
    for(let prop in product){
        flag = false;
        flag = product[prop].toString().indexOf(text) > -1;
        if(flag)
        break;
    }
return flag;
});}

执行

customFilter(productList, '$9');

根据ECMAScript 6,您可以使用findIndex函数。

array[array.findIndex(x => x.name == 'string 1')]

另一种方法(帮助@NullUserException和@Wexoni的注释)是在数组中检索对象的索引,然后从那里开始:

var index = array.map(function(obj){ return obj.name; }).indexOf('name-I-am-looking-for');
// Then we can access it to do whatever we want
array[index] = {name: 'newName', value: 'that', other: 'rocks'};