Sorry for what it appears to be a newbie question (been up working late and just got started with React) but I am trying to figure out how to just render a simple table with nxn dimension.
For instance, in my component, the render output would be something like this:
<table id="simple-board">
<tbody>
<tr id="row0">
<td id="cell0-0"></td>
<td id="cell0-1"></td>
<td id="cell0-2"></td>
</tr>
<tr id="row1">
<td id="cell1-0"></td>
<td id="cell1-1"></td>
<td id="cell1-2"></td>
</tr>
<tr id="row2">
<td id="cell2-0"></td>
<td id="cell2-1"></td>
<td id="cell2-2"></td>
</tr>
</tbody>
</table>
where each row has it's own id , as well as each cell.
The initial state
constructor(props){
super(props);
this.state = {size: 3}
}
is what set the size of the table.
What threw me of was how to implement a for loop inside the JSX.
5 Answers
After a good night sleep, I was able to figure it out:
import React, { Component } from 'react'
export default class Example extends Component {
constructor(props){
super(props);
this.state = {size: 3}
}
render(){
let rows = [];
for (var i = 0; i < this.state.size; i++){
let rowID = `row${i}`
let cell = []
for (var idx = 0; idx < this.state.size; idx++){
let cellID = `cell${i}-${idx}`
cell.push(<td key={cellID} id={cellID}></td>)
}
rows.push(<tr key={i} id={rowID}>{cell}</tr>)
}
return(
<div className="container">
<div className="row">
<div className="col s12 board">
<table id="simple-board">
<tbody>
{rows}
</tbody>
</table>
</div>
</div>
</div>
)
}
}
Thanks all for responding!
One option (move stuff out of render():
import React from 'react';
import SimpleListMenu from '../menu/SimpleMenuListMenu'; // < Material UI element
let rows = [
'Setting One',
'Setting Two',
'Setting Three',
'Setting Four',
];
export default class MyTable extends React.Component {
createTable = () => {
let table = []
for (let i = 0; i < rows.length; i++) {
let children = []
children.push(<td>{rows[i]}</td>, <td>{<SimpleListMenu />}</td>)
table.push(<tr>{children}</tr>)
}
return table
}
render() {
return(
<table>
{this.createTable()}
</table>
)
}
}
Another option:
import React from 'react';
let id = 0;
function createData(option, type) {
id += 1;
return { id, option, type };
}
let rows = [
createData('Setting One', 'Private'),
createData('Setting Two', 'Public'),
createData('Setting Three', 'Group'),
createData('Setting Four', 'Private'),
];
export default class MyTable extends React.Component {
render() {
return(
<table>
{rows.map(row => (
<tr key={row.id}>
<td>{row.option}</td>
<td>{row.type}</td>
</tr>
))}
</table>
)
}
}
See:
somthing like this :
<table id="simple-board">
<tbody>
{this.props.yourData.slice(0,this.state.size).map((item , index)=>{
return(
<tr key={index} id={`row${index}`}>
{item.felanBisar.map((item2,index2)=>{
return(
<td id={`cell${index}-{index2}`}></td>
);
})}
</tr>
);
})}
</tbody>
</table>
private getRows(): any {
let rows: any[] = [];
if (this.state.data)
this.state.data.map((element) => {
rows.push(<tr>
<td style={{border: '1px solid black'}}>
{element.title}
</td>
</tr>);
});
return rows;
}
render( ) {
return <div>
<table style={{border: '1px solid black'}}>
{this.getRows()}
</table>
</div>
}
Building the table from an array with a function, and rows with alternate bgColor:
function buildTable(arr){
const rows = arr.map((row,i) => {
return <tr style={{backgroundColor: i%2 ? '#F0FFF2':'white'}} key={i}>
<td>{row[0]}</td><td>{row[1]}</td>
</tr>
})
return <table><tbody>{rows}</tbody></table>
}
const data = [["FieldA", "aaa"],["FieldB", "bbb"],["FieldC", "ccc"]];
buildTable(data);
