I would want to change the background if you hover over the list items. At the moment the background changes everytime into the spider if i hover over the items. It's because i add a class to all but its all the same class. I would not like to work with the classes but with the multidimensional array. I added a property called icon and there is the image url with the photo i want in the background everytime i hover on specific item.
Can anyone help me? thanks in advance!
{
const phobias = [
{
name: `Arachnophobia`,
defenition: `Arachnophobia is the fear of spiders and other arachnids. This phobia is quite common, affecting as many as 1 in 3 women and 1 in 4 men. The sight of a spider can trigger a fear response, but in some cases, simply an image of an arachnid or the thought of a spider can lead to feelings of overwhelming fear and panic.
So why are so many people terrified of arachnids? While there are an estimated 35,000 different spider species, only around a dozen pose any type of real threat to humans. One of the most common explanations for this and similar animal phobias is that such creatures once posed a considerable threat to our ancestors who lacked the medical know-how and technological tools to address injuries from animals and insects. As a result, evolution contributed to a predisposition to fear these creatures.`,
icon: `assets/img/spider.jpg`,
}, {
name: `Ophidiophobia`,
defenition: `Ophidiophobia is the fear of snakes. This phobia is quite common and often attributed to evolutionary causes, personal experiences, or cultural influences. Some suggest that since snakes are sometimes poisonous, our ancestors who avoided such dangers were more likely to survive and pass down their genes. In a study of 35 snake-fearful participants, however, researchers found that only 3 of these individuals had ever been bitten by a snake. In fact, the majority of the participants had little or no direct experiences with snakes in any capacity.
Another theory suggests that the fear of snakes and similar animals might arise out an inherent fear of disease and contamination. Studies have shown that these animals tend to provoke a disgust response, which might explain why snake phobias are so common yet people tend not to exhibit similar phobias of dangerous animals such as lions or bears.`,
icon: `assets/img/snake.jpg`,
}, {
name: `Acrophobia`,
defenition: `Acrophobia, or the fear of heights, impacts an estimated 23 million adults. This fear can lead to anxiety attacks and avoidance of high places. People who suffer from this phobia may go to great lengths to avoid high places such as bridges, towers, or tall buildings.
While in some cases this fear of heights may be the result of a traumatic experience, current thinking suggests that this fear may have evolved as an adaptation to an environment in which a fall from heights posed a significant danger. While it is common for people to have some degree of fear when encountering heights, a phobia involves a severe fear that can result in panic attacks and avoidance behaviors.`,
icon: `assets/img/height.jpg`,
}, {
name: `Aerophobia`,
defenition: `Aerophobia, or the fear of flying, affects an estimated 8 million U.S. adults despite the fact that airplane accidents are actually very uncommon. Around 1 out of every 3 people has some level of fear of flying. Some of the common symptoms associated with this phobia include trembling, rapid heartbeat, and feeling disoriented.
The fear of flying sometimes causes people to avoid flying altogether. It is often treated using exposure therapy, in which the client is gradually and progressively introduced to flying. The individual may start by simply imagining themselves on a plane before slowly working up to actually sitting on a plane and finally sitting through a flight.`,
icon: `assets/img/plane.jpg`,
}, {
name: `Cynophobia`,
defenition: `Cynophobia, or the fear of dogs, is often associated with specific personal experiences such as being bitten by a dog during childhood. Such events can be quite traumatic and can lead to fear responses that last well into adulthood.
This particular phobia can be quite common. Some estimates suggest that as many as 36 percent of all individuals who seek treatment for a specific phobia have this severe fear of dogs.
This phobia is not just a normal apprehension of unfamiliar canines; it is an irrational and excessive fear that can have a serious impact on a person's life and functioning. For example, a person with this phobia might feel unable to walk down a certain street because they know that there is a dog living in that neighborhood. This avoidance can impact the individual's ability to function in their daily life and make it difficult to get to work, school, or other events outside of the home.`,
icon: `assets/img/dog.jpg`,
}, {
name: `Astraphobia`,
defenition: `Astraphobia is a fear of thunder and lightning. People with this phobia experience overwhelming feelings of fear when they encounter such weather-related phenomena.
Symptoms of astraphobia are often similar to those of other phobias and include shaking, rapid heart rate, and increased respiration. During a thunder or lightning storm, people with this disorder may go to great lengths to take shelter or hide from the weather event such as hiding in bed under the covers or even ducking inside a closet or bathroom.
People with this phobia also tend to develop an excessive preoccupation with the weather. They may spend a great deal of time each day tracking the local and national weather in order to know when any type of storm might take place. In some instances, this phobia may even lead to agoraphobia in which people are so afraid of encountering lightning or thunder that they are unable to leave their homes.`,
icon: `assets/img/lightning.jpg`,
}, {
name: `Trypanophobia`,
defenition: `Trypanophobia is the fear of injections, a condition that can sometimes cause people to avoid medical treatments and doctors. Like many phobias, this fear often goes untreated because people avoid the triggering object and situation. Estimates suggest that as many as 10 percent of people in the U.S. are affected by this type of phobia.
When people with this phobia do have to have an injection, they may experience feelings of extreme dread and elevated heart rate leading up to the procedure. Some people even pass out during the injection. Because these symptoms can be so distressing, people with this phobia sometimes avoid doctors, dentists, and other medical professionals even when they have some type of physical or dental ailment that needs attention.`,
icon: `assets/img/injection.jpg`,
}, {
name: `Social Phobia`,
defenition: `Social phobia involves the fear of social situations and can be quite debilitating. In many cases, these phobias can become so severe that people avoid events, places, and people who are likely to trigger an anxiety attack.
People with this phobia fear being watched or humiliated in front of others. Even ordinary, everyday tasks such as eating a meal can be anxiety-provoking. The American Psychiatric Association reports that social phobias often develop during puberty and can last throughout life unless they are treated.
The most common form of social phobia is a fear of public speaking. In some cases, social phobias can cause people to avoid social situations including school and work, which can have a major impact on the individual's well-being and ability to function.`,
icon: `assets/img/social.jpg`,
}, {
name: `Claustrophobia`,
defenition: `Nearly 5 to 7% of the world’s population is known to suffer from Claustrophobia – the fear of small or restricted spaces. This phobia is mainly related to the fear of suffocation or the fear of restriction. The phobia has been highly studied by experts and scientists, though the sad fact remains that only 2% of its sufferers seek treatment. Claustrophobia is often confused with Cleithrophobia which is the extreme fear of being trapped.`,
icon: `assets/img/small.jpg`,
}, {
name: `Mysophobia`,
defenition: `Mysophobia, or the excessive fear of germs and dirt, can lead people to engage in extreme cleaning, compulsive hand-washing, and even avoidance of things of situations perceived as dirty. In some instances, this phobia may be related to obsessive-compulsive disorder.
This common phobia can also result in people avoiding physical contact with other people out of fear of contamination, overuse of disinfectants, and excessive preoccupation with media reports about illness outbreaks. People with this phobia may also avoid areas where germs are more likely to be present such as doctor's offices, airplanes, schools, and pharmacies.`,
fear: `assets/img/dirt.jpg`,
}
];
const createListItems = phobias => {
const $ul = document.querySelector(`ul`);
phobias.forEach((phobia, index) => {
const $li = document.createElement(`li`);
$li.textContent = phobia.name;
$li.dataset.index = index;
$ul.appendChild($li);
$li.addEventListener(`mouseover`, handleMouseoverListitem);
});
};
const handleMouseoverListitem = e => {
const $li = e.currentTarget;
const index = $li.dataset.index;
const $p = document.querySelector(`p`);
$p.textContent = phobias[index].defenition;
const $body = document.querySelector(`body`);
$body.classList.add("spider");
};
const init = () => {
createListItems(phobias);
};
init();
}html {
box-sizing: border-box;
height: 100%;
font-size: 62.5%;
}
*, *:before, *:after {
box-sizing: inherit;
}
body{
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
}
.spider{
background-image: url(../assets/0.jpg);
background-size: cover;
}
p{
text-align: center;
background-color: rgba(255,255,255,0.7);
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Phobias || Devine</title>
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<h1>The most common phobias</h1>
<ul></ul>
<p></p>
<script src="js/script.js"></script>
</body>
</html>答案 0 :(得分：0)
只需在img标记之前添加p标记，然后动态设置其src属性。像这样：
document.querySelector('img').src = phobias[index].icon;
在你的代码中：
const handleMouseoverListitem = e => {
const $li = e.currentTarget;
const index = $li.dataset.index;
document.querySelector('img').src = phobias[index].icon;
const $p = document.querySelector(`p`);
$p.textContent = phobias[index].defenition;
const $body = document.querySelector(`body`);
$body.classList.add("spider");
};
您还需要添加将图像放置在所需位置所需的样式。
如果您希望图像覆盖整个身体区域，请尝试以下css：
img {
position: absolute;
top: 0;
left: 0;
height: 100vh;
width: 100vw;
}