arrays - 返回相同元素的数组过滤器

问题描述

我正在尝试在数组中上下移动问题，因此我更新了对象中的序列号并根据它对它们进行排序。但是即使数组包含所需的值，以下过滤器语句也会继续返回相同的元素。

像这样修改对象会在原始数组中更新它们吗？

var questiontoswap = this.questions.filter(x => x.sequence == question.sequence + 1 && ("state" in x) ? (x.state != 3) : true)[0];
var originalquestion = this.questions.filter(x => x.sequence == question.sequence && ("state" in x) ? (x.state != 3) : true
                            )[0];
questiontoswap.sequence -= 1;
originalquestion.sequence += 1;
let filteredquestions =this.questions.filter(x => x.state != 3).sort((a, b) => (a.sequence < b.sequence ? -1 : 1));

大批

questions: (3) […]

0: {…}

questionId: 7

questionLanguages: (4) […]

questionType: "Short answer"

questionTypeId: 2

rowId: 1

sequence: 1

<prototype>: {…}

1: {…}

questionId: 13

questionLanguages: (4) […]

questionType: "MCQ"

questionTypeId: 3

rowId: 2

sequence: 2

<prototype>: {…}

2: {…}

questionId: 19

questionLanguages: (4) […]

questionType: "Likert"

questionTypeId: 4

rowId: 3

sequence: 3

<prototype>: {…}

length: 3

标签： arraystypescript

arrays - 返回相同元素的数组过滤器

问题描述

解决方案

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