当我点击任何按钮时，即：上一个、下一个和随机，所有div的内容都会相应地改变。唯一的例外是图像元素，其中的图像保持不变。我不知道如何修复我的代码，使其显示与我所在的正确阵列相对应的图像。其他一切似乎都正常工作。
// local reviews data
const reviews = [
{
id: 1,
name: "susan smith",
job: "web developer",
img:
"https://res.cloudinary.com/diqqf3eq2/image/upload/v1586883334/person-1_rfzshl.jpg",
text:
"I'm baby meggings twee health goth +1. Bicycle rights tumeric chartreuse before they sold out chambray pop-up. Shaman humblebrag pickled coloring book salvia hoodie, cold-pressed four dollar toast everyday carry",
},
{
id: 2,
name: "anna johnson",
job: "web designer",
img:
"https://res.cloudinary.com/diqqf3eq2/image/upload/v1586883409/person-2_np9x5l.jpg",
text:
"Helvetica artisan kinfolk thundercats lumbersexual blue bottle. Disrupt glossier gastropub deep v vice franzen hell of brooklyn twee enamel pin fashion axe.photo booth jean shorts artisan narwhal.",
},
{
id: 3,
name: "peter jones",
job: "intern",
img:
"https://res.cloudinary.com/diqqf3eq2/image/upload/v1586883417/person-3_ipa0mj.jpg",
text:
"Sriracha literally flexitarian irony, vape marfa unicorn. Glossier tattooed 8-bit, fixie waistcoat offal activated charcoal slow-carb marfa hell of pabst raclette post-ironic jianbing swag.",
},
{
id: 4,
name: "bill anderson",
job: "the boss",
img:
"https://res.cloudinary.com/diqqf3eq2/image/upload/v1586883423/person-4_t9nxjt.jpg",
text:
"Edison bulb put a bird on it humblebrag, marfa pok pok heirloom fashion axe cray stumptown venmo actually seitan. VHS farm-to-table schlitz, edison bulb pop-up 3 wolf moon tote bag street art shabby chic. ",
},
];
const person = document.querySelector("#person-img");
const author = document.querySelector("#author");
const job = document.querySelector("#job");
const info = document.querySelector("#info");
const prevBtn = document.querySelector(".prev-btn");
const nextBtn = document.querySelector(".next-btn");
const randomBtn = document.querySelector(".randomBtn");
let number = 0;
window.addEventListener('DOMContentLoaded', function() {
const item = reviews[number]
person.src = item.img;
author.innerHTML = item.name;
job.innerHTML = item.job;
info.innerHTML = item.text;
})
function showPerson(person) {
const item = reviews[person]
person.src = item.img;
author.innerHTML = item.name;
job.innerHTML = item.job;
info.innerHTML = item.text;
}
// show next person
nextBtn.addEventListener("click", function() {
number++
if(number > reviews.length - 1) {
number = 0
}
showPerson(number)
})
prevBtn.addEventListener("click", function() {
number--
if(number < 0) {
number = reviews.length - 1;
}
showPerson(number)
})
randomBtn.addEventListener("click", function() {
number = Math.floor(Math.random() * reviews.length)
showPerson(number)
})/*
===============
Fonts
===============
*/
@import url("https://fonts.googleapis.com/css?family=Open+Sans|Roboto:400,700&display=swap");
/*
===============
Variables
===============
*/
:root {
/* dark shades of primary color*/
--clr-primary-1: hsl(205, 86%, 17%);
--clr-primary-2: hsl(205, 77%, 27%);
--clr-primary-3: hsl(205, 72%, 37%);
--clr-primary-4: hsl(205, 63%, 48%);
/* primary/main color */
--clr-primary-5: hsl(205, 78%, 60%);
/* lighter shades of primary color */
--clr-primary-6: hsl(205, 89%, 70%);
--clr-primary-7: hsl(205, 90%, 76%);
--clr-primary-8: hsl(205, 86%, 81%);
--clr-primary-9: hsl(205, 90%, 88%);
--clr-primary-10: hsl(205, 100%, 96%);
/* darkest grey - used for headings */
--clr-grey-1: hsl(209, 61%, 16%);
--clr-grey-2: hsl(211, 39%, 23%);
--clr-grey-3: hsl(209, 34%, 30%);
--clr-grey-4: hsl(209, 28%, 39%);
/* grey used for paragraphs */
--clr-grey-5: hsl(210, 22%, 49%);
--clr-grey-6: hsl(209, 23%, 60%);
--clr-grey-7: hsl(211, 27%, 70%);
--clr-grey-8: hsl(210, 31%, 80%);
--clr-grey-9: hsl(212, 33%, 89%);
--clr-grey-10: hsl(210, 36%, 96%);
--clr-white: #fff;
--clr-red-dark: hsl(360, 67%, 44%);
--clr-red-light: hsl(360, 71%, 66%);
--clr-green-dark: hsl(125, 67%, 44%);
--clr-green-light: hsl(125, 71%, 66%);
--clr-black: #222;
--ff-primary: "Roboto", sans-serif;
--ff-secondary: "Open Sans", sans-serif;
--transition: all 0.3s linear;
--spacing: 0.1rem;
--radius: 0.25rem;
--light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
--dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
--max-width: 1170px;
--fixed-width: 620px;
}
/*
===============
Global Styles
===============
*/
*,
::after,
::before {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: var(--ff-secondary);
background: var(--clr-grey-10);
color: var(--clr-grey-1);
line-height: 1.5;
font-size: 0.875rem;
}
ul {
list-style-type: none;
}
a {
text-decoration: none;
}
h1,
h2,
h3,
h4 {
letter-spacing: var(--spacing);
text-transform: capitalize;
line-height: 1.25;
margin-bottom: 0.75rem;
font-family: var(--ff-primary);
}
h1 {
font-size: 3rem;
}
h2 {
font-size: 2rem;
}
h3 {
font-size: 1.25rem;
}
h4 {
font-size: 0.875rem;
}
p {
margin-bottom: 1.25rem;
color: var(--clr-grey-5);
}
@media screen and (min-width: 800px) {
h1 {
font-size: 4rem;
}
h2 {
font-size: 2.5rem;
}
h3 {
font-size: 1.75rem;
}
h4 {
font-size: 1rem;
}
body {
font-size: 1rem;
}
h1,
h2,
h3,
h4 {
line-height: 1;
}
}
/* global classes */
/* section */
.section {
padding: 5rem 0;
}
.section-center {
width: 90vw;
margin: 0 auto;
max-width: 1170px;
}
@media screen and (min-width: 992px) {
.section-center {
width: 95vw;
}
}
main {
min-height: 100vh;
display: grid;
place-items: center;
}
/*
===============
Reviews
===============
*/
main {
min-height: 100vh;
display: grid;
place-items: center;
}
.title {
text-align: center;
margin-bottom: 4rem;
}
.underline {
height: 0.25rem;
width: 5rem;
background: var(--clr-primary-5);
margin-left: auto;
margin-right: auto;
}
.container {
width: 80vw;
max-width: var(--fixed-width);
}
.review {
background: var(--clr-white);
padding: 1.5rem 2rem;
border-radius: var(--radius);
box-shadow: var(--light-shadow);
transition: var(--transition);
text-align: center;
}
.review:hover {
box-shadow: var(--dark-shadow);
}
.img-container {
position: relative;
width: 150px;
height: 150px;
border-radius: 50%;
margin: 0 auto;
margin-bottom: 1.5rem;
}
#person-img {
width: 100%;
display: block;
height: 100%;
object-fit: cover;
border-radius: 50%;
position: relative;
}
.img-container::after {
font-family: "Font Awesome 5 Free";
font-weight: 900;
content: "f10e";
position: absolute;
top: 0;
left: 0;
width: 2.5rem;
height: 2.5rem;
display: grid;
place-items: center;
border-radius: 50%;
transform: translateY(25%);
background: var(--clr-primary-5);
color: var(--clr-white);
}
.img-container::before {
content: "";
width: 100%;
height: 100%;
background: var(--clr-primary-5);
position: absolute;
top: -0.25rem;
right: -0.5rem;
border-radius: 50%;
}
#author {
margin-bottom: 0.25rem;
}
#job {
margin-bottom: 0.5rem;
text-transform: uppercase;
color: var(--clr-primary-5);
font-size: 0.85rem;
}
#info {
margin-bottom: 0.75rem;
}
.prev-btn,
.next-btn {
color: var(--clr-primary-7);
font-size: 1.25rem;
background: transparent;
border-color: transparent;
margin: 0 0.5rem;
transition: var(--transition);
cursor: pointer;
}
.prev-btn:hover,
.next-btn:hover {
color: var(--clr-primary-5);
}
.random-btn {
margin-top: 0.5rem;
background: var(--clr-primary-10);
color: var(--clr-primary-5);
padding: 0.25rem 0.5rem;
text-transform: capitalize;
border-radius: var(--radius);
transition: var(--transition);
border-color: var(--clr-primary-5);
cursor: pointer;
}
.random-btn:hover {
background: var(--clr-primary-5);
color: var(--clr-primary-1);
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Starter</title>
<!-- font-awesome -->
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.14.0/css/all.min.css"
/>
<!-- styles -->
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<h1>review project</h1>
<!-- javascript -->
<img src="" id="person-img" alt="">
<div id="author"></div>
<div id="job"></div>
<div id="info"></div>
<button class="prev-btn" type="button">Previous</button>
<button class="next-btn" type="button">Next</button>
<button class="randomBtn" type="button">randomBtn</button>
<script src="app.js"></script>
</body>
</html>问题出在showPerson函数上
img引用和数组的索引使用相同的名称
更改
function showPerson(person) {
const item = reviews[person]
person.src = item.img; //person is a number
author.innerHTML = item.name;
job.innerHTML = item.job;
info.innerHTML = item.text;
}
进入
function showPerson(index) {
const item = reviews[index]
person.src = item.img;
author.innerHTML = item.name;
job.innerHTML = item.job;
info.innerHTML = item.text;
}