Function GridVirtualizerFixed

examples/react/fixed/src/main.tsx:145–213

()

}

function GridVirtualizerFixed() {
  const parentRef = React.useRef(null)

  const rowVirtualizer = useVirtualizer({
    count: 10000,
    getScrollElement: () => parentRef.current,
    estimateSize: () => 35,
    overscan: 5,
  })

  const columnVirtualizer = useVirtualizer({
    horizontal: true,
    count: 10000,
    getScrollElement: () => parentRef.current,
    estimateSize: () => 100,
    overscan: 5,
  })

  return (
    <>
      <div
        ref={parentRef}
        className="List"
        style={{
          height: `500px`,
          width: `500px`,
          overflow: 'auto',
        }}
      >
        <div
          style={{
            height: `${rowVirtualizer.getTotalSize()}px`,
            width: `${columnVirtualizer.getTotalSize()}px`,
            position: 'relative',
          }}
        >
          {rowVirtualizer.getVirtualItems().map((virtualRow) => (
            <React.Fragment key={virtualRow.key}>
              {columnVirtualizer.getVirtualItems().map((virtualColumn) => (
                <div
                  key={virtualColumn.key}
                  className={
                    virtualColumn.index % 2
                      ? virtualRow.index % 2 === 0
                        ? 'ListItemOdd'
                        : 'ListItemEven'
                      : virtualRow.index % 2
                        ? 'ListItemOdd'
                        : 'ListItemEven'
                  }
                  style={{
                    position: 'absolute',
                    top: 0,
                    left: 0,
                    width: `${virtualColumn.size}px`,
                    height: `${virtualRow.size}px`,
                    transform: `translateX(${virtualColumn.start}px) translateY(${virtualRow.start}px)`,
                  }}