score:1
Accepted answer
you don't actually need an
you don't actually need an useeffect
to achieve that, also change your <a>
tag to a <button>
working snippet:
function app() {
const [value, setvalue] = react.usestate(1);
const slides = ["one", "two", "thre"];
const prev = () => {
if (value > 1) setvalue(value - 1);
};
const next = () => {
if (value < slides.length) setvalue(value + 1);
};
return (
<div classname="slider">
<button classname="prev" onclick={prev}>
previous
</button>
<h2>barking road, london {value}</h2>
<button classname="next" onclick={next}>
next
</button>
</div>
);
}
const rootelement = document.getelementbyid("root");
reactdom.render(<app />, rootelement);
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.production.min.js"></script>
<div id="root"></div>
score:1
just update like this:
const prev = () => {
if (value <= 1) return;
setvalue(value - 1);
};
const next = () => {
if (value >= slides.length) return;
setvalue(value + 1);
};
and change tag by other tag: https://codesandbox.io/s/stupefied-robinson-yjmkm?file=/src/app.tsx
Source: stackoverflow.com
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