React实现随机颜色选择器的示例代码

import { useMemo, useState } from "react";
import { getRandomColor } from "@/utils/color";
import classnames from "classnames";
import { Check, Refresh } from "@icon-park/react";
import { nanoid } from "nanoid";

interface ColorSelectProps {
  defaultValue: string;
  value?: string;
  onChange?: (value: string) => void;
}

export default function ColorSelect(props: ColorSelectProps) {
  const { defaultValue, value, onChange } = props;

  // 用于重新生成颜色
  const [randomId, setRandomId] = useState("");

  const colors = useMemo(() => {
    // 随机生成6个颜色
    return new Array(6).fill(0).map(() => getRandomColor());
  }, [randomId]);

  const targetColors = useMemo(() => {
    // 过滤是否存在默认值的情况
    return [...colors, defaultValue || ""].filter(
      v => !!v && !["#"].includes(v),
    );
  }, [defaultValue, colors]);

  return (
    <div className="flex gap-2">
      {targetColors.map(color => {
        console.log("color--->", color);
        return (
          <div
            key={color}
            data-color={color}
            onClick={() => onChange?.(color)}
            className={classnames(
              "h-8 w-8 cursor-pointer flex justify-center items-center",
            )}
            style={{ backgroundColor: color }}>
            {value === color && (
              <Check theme="multi-color" size="24" fill="#fff" />
            )}
          </div>
        );
      })}
      <div
        className="h-8 w-8 cursor-pointer flex justify-center items-center border border-solid border-color-BGBrown text-color-BGBrown text-P4-Regular"
        onClick={() => setRandomId(nanoid())}>
        <Refresh theme="outline" size="18" fill="#333" />
      </div>
    </div>
  );
}