javascript - 查找并删除 Javascript 对象数组中的第一个匹配元素

Question

假设我有一个数组:

    members = [
        {name: 'Anna', class: 'one'}, 
        {name: 'Bob', class: 'two'},  
        {name: 'Chuck', class: 'two'}];

    removed = members.myRemoveByClass('two');     //something like

    // removed is {name: 'Bob', class: 'two'} 
    // members is [{name: 'Anna', class: 'one'}, {name: 'Chuck', class: 'two'}]

我正在为 myRemoveByClass 找东西。 ES2015 没问题或使用 Lodash。该阵列将已经订购。 None的 questions我有 seen相当match我是什么looking为了。

Answer 1

您可以使用 Array.prototype.findIndex() :

The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise, it returns -1, indicating no element passed the test.

然后 splice() 索引的对象。

var members = [
        {name: 'Anna', class: 'one'}, 
        {name: 'Bob', class: 'two'},  
        {name: 'Chuck', class: 'two'}];
var idx = members.findIndex(p => p.class=="two");
var removed = members.splice(idx,1);     
console.log(removed);
console.log(members);