尊龙凯时人生就是博

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ÔÚ JavaScript ÖÐÅþÁ¬ SQL Êý¾Ý¿âÓÐÁ½ÖÖÖ÷ÒªÒªÁ죺

1. ʹÓÃÔ­Éú XMLHttpRequest ¹¤¾ß

// ½¨Éè XMLHttpRequest ¹¤¾ß
let xhr = new XMLHttpRequest();

// ÉèÖà HTTP ÇëÇó
xhr.open("POST", "database.php", true);

// ÉèÖÃÇëÇóÍ·
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

// ×¼±¸ÇëÇóÊý¾Ý
let data = "query=SELECT * FROM table_name";

// ·¢ËÍÇëÇó
xhr.send(data);

// ´¦ÀíЧÀÍÆ÷ÏìÓ¦
xhr.onload = function() {
  if (xhr.status == 200) {
    // ÇëÇóÀÖ³É£¬´¦ÀíÏìÓ¦Êý¾Ý
    let response = JSON.parse(xhr.responseText);
    // ...
  } else {
    // ÇëÇóʧ°Ü£¬´¦Àí¹ýʧ
    // ...
  }
};

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2. ʹÓõÚÈý·½¿â£¨ÍƼö£©

¿ÉÒÔʹÓÃÏñ “mysql-connector-js” ÕâÑùµÄµÚÈý·½¿âÀ´¼ò»¯ÅþÁ¬Àú³Ì£º

// µ¼Èë mysql-connector-js ¿â
import mysql from "mysql-connector-js";

// ½¨ÉèÅþÁ¬³Ø
const pool = await mysql.createPool({
  host: "localhost",
  user: "username",
  password: "password",
  database: "database_name"
});

// »ñÈ¡ÅþÁ¬
const connection = await pool.getConnection();

// Ö´ÐÐÅÌÎÊ
const results = await connection.query("SELECT * FROM table_name");

// ÊÍ·ÅÅþÁ¬
connection.release();

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