Javascript 在react中的特定列表项中添加/删除类
我有一个react网页,它呈现了本地数据库中数组的链接列表。我想在将鼠标悬停在每个链接(列表项)上时显示链接提示 当前,当我将鼠标悬停在列表项(我网页上的链接)上时,会显示来自其他链接的所有链接提示。我只想要我悬停在上面的那一个来显示提示。我怎样才能达到这个效果 -- 行动中的问题:Javascript 在react中的特定列表项中添加/删除类,javascript,reactjs,list,animation,mapping,Javascript,Reactjs,List,Animation,Mapping,我有一个react网页,它呈现了本地数据库中数组的链接列表。我想在将鼠标悬停在每个链接(列表项)上时显示链接提示 当前,当我将鼠标悬停在列表项(我网页上的链接)上时,会显示来自其他链接的所有链接提示。我只想要我悬停在上面的那一个来显示提示。我怎样才能达到这个效果 -- 行动中的问题: function Works() { const [hoverHint, setHoverHint] = useState(false); function showHoverHint() { s
function Works() {
const [hoverHint, setHoverHint] = useState(false);
function showHoverHint() {
setHoverHint(true);
}
function hideHoverHint() {
setHoverHint(false);
}
const linkMaps = {
website: <Globe fill="#aaa" size={20} />,
github: <GitHub fill="#aaa" size={20} />,
gitlab: <GitLab fill="#aaa" size={20} />,
apk: <Android fill="#aaa" size={20} />,
youtube: <YouTube fill="#aaa" size={20} />
};
return(
<ul className="work-links">
{work.links.map(link => (
<li>
<span
className={
hoverHint ? 'before show-hint' : 'before hide-hint'
}
>
{link.text}
</span>
<a
href={link.url}
target="_blank"
rel="noopener noreferrer"
onMouseOver={showHoverHint}
onMouseOut={hideHoverHint}
>
{linkMaps[link.type]}
</a>
<span
className={
hoverHint ? 'after show-hint' : 'after hide-hint'
}
>
{link.text}
</span>
</li>
))}
</ul>
);
}
.work-links {
list-style-type: none;
padding: 0;
margin-top: 0.3em;
margin-bottom: 0;
position: absolute;
display: flex;
flex-direction: column;
justify-content: flex-start;
}
.work-links svg {
transition: 0.15s;
}
.work-links a {
display: inline-block;
padding: 0.4em 0.4em 0;
margin-bottom: 0.8em;
background-color: #eee;
border-radius: 50%;
transition: 0.15s;
z-index: 1;
}
.work-links a:hover {
background-color: #333;
}
.work-links a:hover svg {
fill: #eee;
}
.work-card-container:nth-child(odd) .work-links {
right: -11em;
align-items: flex-start;
}
.work-card-container:nth-child(even) .work-links {
left: -11em;
align-items: flex-end;
}
.work-card-container:nth-child(odd) .before {
display: none;
}
.work-card-container:nth-child(even) .before {
right: 0.5em;
transition: 0.1s;
}
.work-card-container:nth-child(even) .after {
display: none;
}
.work-card-container:nth-child(odd) .after {
left: 0.5em;
transition: 0.2s;
}
.hide-hint {
opacity: 0;
}
.work-card-container:nth-child(even) .hide-hint {
transform: translateX(50%);
}
.work-card-container:nth-child(odd) .hide-hint {
transform: translateX(-50%);
}
.show-hint {
transform: translateX(0);
opacity: 1;
}
.work-links > li {
display: flex;
align-items: center;
}
.work-links span {
position: relative;
top: -0.5em;
color: #888;
}
--
反应代码:
function Works() {
const [hoverHint, setHoverHint] = useState(false);
function showHoverHint() {
setHoverHint(true);
}
function hideHoverHint() {
setHoverHint(false);
}
const linkMaps = {
website: <Globe fill="#aaa" size={20} />,
github: <GitHub fill="#aaa" size={20} />,
gitlab: <GitLab fill="#aaa" size={20} />,
apk: <Android fill="#aaa" size={20} />,
youtube: <YouTube fill="#aaa" size={20} />
};
return(
<ul className="work-links">
{work.links.map(link => (
<li>
<span
className={
hoverHint ? 'before show-hint' : 'before hide-hint'
}
>
{link.text}
</span>
<a
href={link.url}
target="_blank"
rel="noopener noreferrer"
onMouseOver={showHoverHint}
onMouseOut={hideHoverHint}
>
{linkMaps[link.type]}
</a>
<span
className={
hoverHint ? 'after show-hint' : 'after hide-hint'
}
>
{link.text}
</span>
</li>
))}
</ul>
);
}
.work-links {
list-style-type: none;
padding: 0;
margin-top: 0.3em;
margin-bottom: 0;
position: absolute;
display: flex;
flex-direction: column;
justify-content: flex-start;
}
.work-links svg {
transition: 0.15s;
}
.work-links a {
display: inline-block;
padding: 0.4em 0.4em 0;
margin-bottom: 0.8em;
background-color: #eee;
border-radius: 50%;
transition: 0.15s;
z-index: 1;
}
.work-links a:hover {
background-color: #333;
}
.work-links a:hover svg {
fill: #eee;
}
.work-card-container:nth-child(odd) .work-links {
right: -11em;
align-items: flex-start;
}
.work-card-container:nth-child(even) .work-links {
left: -11em;
align-items: flex-end;
}
.work-card-container:nth-child(odd) .before {
display: none;
}
.work-card-container:nth-child(even) .before {
right: 0.5em;
transition: 0.1s;
}
.work-card-container:nth-child(even) .after {
display: none;
}
.work-card-container:nth-child(odd) .after {
left: 0.5em;
transition: 0.2s;
}
.hide-hint {
opacity: 0;
}
.work-card-container:nth-child(even) .hide-hint {
transform: translateX(50%);
}
.work-card-container:nth-child(odd) .hide-hint {
transform: translateX(-50%);
}
.show-hint {
transform: translateX(0);
opacity: 1;
}
.work-links > li {
display: flex;
align-items: center;
}
.work-links span {
position: relative;
top: -0.5em;
color: #888;
}
您需要基于唯一标识符而不是共享状态值触发悬停状态 我想到了一种方法:
const [selectedLink, setSelectedLink] = React.useState(null)
<ul className="work-links">
{work.links.map(link => (
<li>
<span
className={
hoverHint ? 'before show-hint' : 'before hide-hint'
}
>
{link.text}
</span>
<a
href={link.url}
target="_blank"
rel="noopener noreferrer"
// Use the URL as a unique identifier
onMouseOver={() => setSelectedLink(link.url)}
// Set to null on mouseout
onMouseOut={() => setSelectedLink(null)}
>
{linkMaps[link.type]}
</a>
<span
className={
selectedLink === link.url ? 'after show-hint' : 'after hide-hint'
}
>
{link.text}
</span>
</li>
))}
</ul>
const[selectedLink,setSelectedLink]=React.useState(null)
{work.links.map(link=>(
-
{link.text}
{link.text}
))}
感谢您的快速回复。我更新了我的问题,并在react函数的“return”之前添加了语句以供参考。至于你的答案,我应该如何使用'selectedLink'状态中的'link.url'来添加/删除'show hint'或'hide hint'类?哎呀!更新了我的答案,哈哈。是的,您想将selectedLink
与迭代的link.url
属性进行比较以触发类。