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VisualizaçõesHow to change the background color of th on click in react js?
I want to change the background color of th when I click on tr. This is my minimal code:
props.params.map((item, i) => {
return (
<>
<tr key={i} onClick={() => attributeClicked(i) } >
<th className={'a'+i}>
<span>{ item.label }</span>
</th>
</tr>
</>
)
})
function attributeClicked (i: number) {
document.getElementsByClassName(`a${i}`)[0].style.backgroundColor = "red!important";
}
However this code is not working. Also when I hover over style it shows the error Property 'style' does not exist on type 'Element'.ts(2339)
·
Juan Pablo Isaza
1 Respostas
Responde à pergunta0
Hello look a this example using ref to access to the element and change the color of the font or whatever you want.
import { createRef } from "react";
export default function App() {
const renderTh = (data, index, ref) => {
return (
<th ref={ref} key={index} onClick={() => redColor(ref)}>
{data}
</th>
);
};
const redColor = (ref) => {
if (!ref.current) return;
ref.current.style.color = "red";
};
const dataSet = ["one", "two", "three"];
const refArray = [];
return (
<div className="App">
<h1>Hello CodeSandbox</h1>
<table>
<thead>
{dataSet.map((data, index) => {
const ref = createRef();
refArray[index] = ref;
return renderTh(data, index, ref);
})}
</thead>
</table>
</div>
);
}
·
Juan Pablo Isaza
Relatório
Responde à pergunta