反应输入清除占位符

Question

我在所有页面都有输入。 我试图在将 item.name (setSearchSchool) 发送到 handleSuggestionClick 后清除输入占位符。 如果我清除了 handleSuggestionClick 中的 setSearchSchool，我就不会进入下一页。 如何清理输入占位符？

搜索组件（代码更新）

import React, { useEffect, useState } from "react";
import api from "../../api/index";
import "./index.css";
import { useLocation } from "wouter";

export default function Search() {
  const [searchSchool, setSearchShool] = useState("");
  const [showSuggestions, setShowSuggestions] = useState(false);
  const [allSchools, setAllSchools] = useState([]);
  const [, pushLocation] = useLocation();

  useEffect(() => {
    (async () => {
      const data = await api.getSchools();
      setAllSchools(data);
    })();
  }, []);

  const resultsAllSchools = !searchSchool
    ? allSchools
    : allSchools
        .map(item => ({
          name: item.name,
          codeSchool: item.codeSchool,
          address: item.address,
          city: item.city,
          nameRegion: item.nameRegion,
          codeRegion: item.codeRegion,
          latitud: item.latitud,
          longitud: item.longitud
        }))
        .filter(school => school.name.toLowerCase().includes(searchSchool));

  const handleOnchange = e => {
    e.preventDefault();
    const lowerCase = e.target.value.toLowerCase();
    setSearchShool(lowerCase);
    setShowSuggestions(true);
    if (e.target.value === "" || null) {
      setShowSuggestions(false);
    }
  };

  const handleSuggestionClick = item => {
    setSearchShool(item.name);
    localStorage.setItem("myLocalStore", JSON.stringify(item));
    pushLocation(`/centre/${item.codeSchool}`);
  };

  return (
    <>
      <section className="section">
        <div className="search">
          <input
            className="select"
            type="text"
            placeholder="Cerca el teu centre educatiu... "
            value={searchSchool}
            onChange={handleOnchange}
          ></input>
          <div className="svg_search">
            <svg
              height="25"
              viewBox="0 0 21 21"
              width="25"
              xmlns="http://www.w3.org/2000/svg"
            >
              <g
                fill="none"
                fillRule="evenodd"
                stroke=" #0099ff"
                strokeWidth="2"
                strokeLinecap="round"
                strokeLinejoin="round"
              >
                <circle cx="8.5" cy="8.5" r="5" />
                <path d="m17.571 17.5-5.571-5.5" />
              </g>
            </svg>
          </div>
        </div>
        <ul>
          {showSuggestions &&
            resultsAllSchools.map((item, i) => (
              <li
                key={i}
                title={item.name}
                onClick={() => handleSuggestionClick(item)}
              >
                <p className="school_name">{item.name}</p>
                <p className="school_address">
                  {item.address} - {item.city}
                </p>
              </li>
            ))}
        </ul>
      </section>
    </>
  );
}

第一页

第二页

Answer 1

如果要清除表单，那么不要设置状态，直接从handleSuggestionClick函数的参数中使用它。

const handleSuggestionClick = item => {
   localStorage.setItem("myLocalStore", JSON.stringify(item));
   pushLocation(`/centre/${item.codeSchool}`);
};