每当我将鼠标悬停在导航栏中的一个选择上时，我都试图更改一个 div 的 ID。我只是看不出我的问题在哪里。当我检查页面并将鼠标悬停在导航栏选择上时，div id 没有改变。
这是我的javascript:
// Run JS after contents are loaded
document.addEventListener("DOMContentLoaded", initialiseWebPage);
function initialiseWebPage() //Loads DOM content
{
var navImage = document.getElementById("picture");
// Variables for each Nav Selection
const home = document.getElementById("Home");
const portfolio = document.getElementsById("Portfolio");
const services = document.getElementsById("Services");
const achievements = document.getElementsById("Achievements");
const hobbies = document.getElementsById("Hobbies");
// Event listeners
home.addEventListener("mouseover", changeIdHome);
portfolio.addEventListener("mouseover", changeIdPortfolio);
services.addEventListener("click", changeIdServices);
achievements.addEventListener("mouseover", changeIdAchievements);
hobbies.addEventListener("mouseover", changeIdHobbies);
function changeIdHome()
{
navImag.id = "Home";
}
function changeIdPortfolio()
{
navImage.id = "Portfolio";
}
function changeIdServices()
{
navImage.id = "Services";
}
function changeIdAchievements()
{
navImage.id = "Achievements";
}
function changeIdHobbies()
{
navImage.id = "Hobbies";
}
}
这是我的 HTML 的开头:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>My Website</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="https://use.fontawesome.com/releases/v5.0.8/js/all.js"></script>
<script src="Script.js"></script> <!-- Link document to javascript file -->
<link href="style.css" rel="stylesheet">
<link rel="stylesheet" href="https://m.w3newbie.com/you-tube.css">
</head>
<body>
<!-- Navigation -->
<div class="container-fluid">
<div id="picture">
我非常确定我已将我的 js 正确链接到我的 html。
正如您在 HTML 底部看到的那样，我尝试播放的 div 的 ID 为“图片”。
最佳答案
我不能 100% 证实这一点，但是，在您使用的许多常量上，document.getElementsById 应该是 document.getElementById。
这是修改后的 JavaScript 代码
document.addEventListener("DOMContentLoaded", initialiseWebPage);
function initialiseWebPage() //Loads DOM content
{
var navImage = document.getElementById("picture");
// Variables for each Nav Selection
const home = document.getElementById("Home");
const portfolio = document.getElementById("Portfolio");
const services = document.getElementById("Services");
const achievements = document.getElementById("Achievements");
const hobbies = document.getElementById("Hobbies");
// Event listeners
home.addEventListener("mouseover", changeIdHome);
portfolio.addEventListener("mouseover", changeIdPortfolio);
services.addEventListener("click", changeIdServices);
achievements.addEventListener("mouseover", changeIdAchievements);
hobbies.addEventListener("mouseover", changeIdHobbies);
function changeIdHome()
{
navImag.id = "Home";
}
function changeIdPortfolio()
{
navImage.id = "Portfolio";
}
function changeIdServices()
{
navImage.id = "Services";
}
function changeIdAchievements()
{
navImage.id = "Achievements";
}
function changeIdHobbies()
{
navImage.id = "Hobbies";
}
}
希望对您有所帮助!
关于javascript - 尝试使用 Javascript 更改元素的 id，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57532885/