Dynamic resizing of grids using React and TypeScript

Question

Dynamic resizing of grids using React and TypeScript

I'm attempting to create a dynamic grid resizing functionality in React and TypeScript by adjusting the lgEditorSize value on onClick action.

Setting the initial lgEditorSize value

const size: any = {};
size.lgEditorSize = 6;

Adjusting the lgEditorSize value

<Box display='flex' justifyContent='right'>
      <span>Show or hide the sidebar using</span>
      <Button onClick={() => {size.lgEditorSize = 12;}}> <ArrowBackIosIcon/> </Button>
      <Button onClick={() => {size.lgEditorSize = 6;}}> <ArrowForwardIosIcon/> </Button>  
      <span>Button</span> 
</Box>


<GridContainer>
            <Grid item lg={size.lgEditorSize}>
                Contents
            </Grid>
<GridContainer>

The value is updated but the grid does not resize. Any suggestions on how to resize the Grid using Button actions?

javascript css reactjs typescript bootstrap-4

Answer 1

Answer №1

When you modify a variable, the Component may not re-render unless it's aware of the change. To trigger re-renders, it's essential to utilize state because React automatically updates any components linked to that state when it changes.

To ensure re-renders, assign lgEditorSize to a state and reference the state variable accordingly:

const [lgEditorSize, setLgEditorSize] = useState<GridSize>(6); 

<Box display='flex' justifyContent='right'>
      <span>Toggle the sidebar visibility with:</span>
      <Button onClick={() => setLgEditorSize(12)}> <ArrowBackIosIcon/> </Button>
      <Button onClick={() => setLgEditorSize(6)}> <ArrowForwardIosIcon/> </Button>  
      <span>Button</span> 
</Box>


<GridContainer>
            <Grid item lg={lgEditorSize}>
                Content
            </Grid>
<GridContainer>

For more information on using state and understanding the React component lifecycle, visit: https://reactjs.org/docs/state-and-lifecycle.html

Answer 2

When you modify a variable, the Component may not re-render unless it's aware of the change. To trigger re-renders, it's essential to utilize state because React automatically updates any components linked to that state when it changes.

To ensure re-renders, assign lgEditorSize to a state and reference the state variable accordingly:

const [lgEditorSize, setLgEditorSize] = useState<GridSize>(6); 

<Box display='flex' justifyContent='right'>
      <span>Toggle the sidebar visibility with:</span>
      <Button onClick={() => setLgEditorSize(12)}> <ArrowBackIosIcon/> </Button>
      <Button onClick={() => setLgEditorSize(6)}> <ArrowForwardIosIcon/> </Button>  
      <span>Button</span> 
</Box>


<GridContainer>
            <Grid item lg={lgEditorSize}>
                Content
            </Grid>
<GridContainer>

For more information on using state and understanding the React component lifecycle, visit: https://reactjs.org/docs/state-and-lifecycle.html

Dynamic resizing of grids using React and TypeScript

Answer №1

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