I have a little issue with React. I can't create a nested component with a for loop. What I want to do is create 9 cells of a table and then create 3 rows with 3 cells for every row and after that mount the 3 rows together and create a board 9x9.
Let say that I want to get something like this, but using a loop
class Board extends React.Component {
renderSquare(i) {
return <Square value={this.props.squares[i]} onClick={() => this.props.onClick(i)} />;
}
render(){
return(
<div>
<div className=board-row>
{this.renderSquare(0)}
{this.renderSquare(1)}
{this.renderSquare(2)}
</div>
<div className=board-row>
{this.renderSquare(3)}
{this.renderSquare(4)}
{this.renderSquare(5)}
</div>
<div className=board-row>
{this.renderSquare(6)}
{this.renderSquare(7)}
{this.renderSquare(8)}
</div>
</div>
);
}
}
I searched others question for hours and I think my code is almost correct but it does not render what I want. I only get a white page.
here is my code:
class Board extends React.Component {
renderSquare(i) {
return <Square value={this.props.squares[i]} onClick={() => this.props.onClick(i)} />;
}
createCells(i){
if(i%3){return;}
var index = this.fillN(Array(i)); //index=[0,1,2,3,4,5,6,7,8]
var cells = [];
index.forEach(function(i){
cells.push(() => {
return(
<div>
{this.renderSquare(i)}
</div>
);
});
});
return cells;
}
createRows(cells){
var index = this.fillMod3(Array(3)); //index=[0,3,6]
var rows = []
index.forEach(function(i){
rows.push(() => {
return(
<div>
{cells[i]}
{cells[i+1]}
{cells[i+2]}
</div>
);
});
});
return rows;
}
render(){
var cells = this.createCells(9);
var rows = this.createRows(cells);
var board = [];
var index = this.fillN(Array(1));
index.forEach(function(row){
board.push(() => {
return(
<div>{row}</div>
);
});
})
return(
<div>
{board[0]}
</div>
);
}
I always get on the screen something like this:
<Board>
<div> /*empty*/ </div>
</Board>
I want to clarify that I am sure that the rest of the code with which that component (Board) interacts has no issues.
I am new in react and if someoane can help me i will apreciate very much.
Sorry for my poor English
EDIT1:
following marklew examples i should be able to do something like this
render(){
var index1 = this.fillN(Array(3)); //index1=[0,1,2]
var index2 = this.fillN(Array(3)); //index2=[0,1,2]
return(
<div>
{index1.map((e1,i1) => {
return(
<div key={i1} className=board-row>
{index2.map((e2, i2) => {
return(
<p key={i2+10}>
{this.renderSquare(i2)}
</p>
)
})}
</div>
)
})}
</div>
);
}
but it doesn't do what I want. I obtain just a column with 9 cells and the cells are the same objects. I dont understand why. (I understand that are the same objects because i assign a handle function onClick when I create them like that:
<Board
onClick={(i) => this.handleClick(i)} //handleClick just draws a X in the cell
/>
and I get the X drown in 3 cells simultaneously
EDIT2:
I reached a solution:
render(){
var index1 = this.fillMod3(Array(3));
return(
<div>
{index1.map((e,i) => {
return(
<div key={i} className=board-row>
{this.renderSquare(e)}
{this.renderSquare(e+1)}
{this.renderSquare(e+2)}
</div>
)
})}
</div>
);
}
}
but is not what I want. I want another loop even for the intern renderSquare(i) function.
