[Add]Remark [Modify]connection information

 const puppeteer  = require("puppeteer");
-function login(id, pw) {
-  const crawler = async() => {
+//use puppeteer
+
+function setTimeoutPromise(ms) {
+    return new Promise((resolve, reject) => {
+      setTimeout(() => resolve(), ms);
+    });
+}
+
+async function loglogin(id, pw) {
     try{
+        //for visibility, headless: false  
         const browser = await puppeteer.launch({headless: false, args:['--window-size=1920,1080']});
+        
         const page = await browser.newPage();
         await page.setViewport({
             width:1920,
@@ -11,19 +20,32 @@ function login(id, pw) {
         await page.goto('https://e-campus.khu.ac.kr/xn-sso/login.php?auto_login=&sso_only=&cvs_lgn=&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Fxn-sso%2Fgw-cb.php%3Ffrom%3D%26login_type%3Dstandalone%26return_url%3Dhttps%253A%252F%252Fe-campus.khu.ac.kr%252Flogin%252Fcallback');
         await page.type("#login_user_id", id);
         await page.type("#login_user_password", pw);
+        
+        //press the login button on E_Campus homepage
         await page.click('#form1 > div > div.login_btn > a > span');
+        await page.waitForTimeout(500);
+        await setTimeoutPromise(1000);
+        
+        //When login is failed, return [id, pw, message] -> ["", "", "Incorrect~"]
         if(page.url() === 'https://e-campus.khu.ac.kr/xn-sso/gw-cb.php?from=&login_type=standalone&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Flogin%2Fcallback'){
-          return "Incorrect user ID or password."
+            return ["", "", "Incorrect user ID or password."];   
         }
         else {
-          return `I got data { id:"${id}"  pw:"${pw}" }`;
+            return [id, pw, `I got data { id:"${id}"  pw:"${pw}" }`]; 
          }
     }catch(err){
         console.log(err)
     }
+}
+async function login(id, pw) {
+    await setTimeoutPromise(1000);
+  try {
+    // value has the list ["","","Incorrect~"] or [id, pw, "I got data~"]
+    const value = await loglogin(id, pw);
+    console.log(value[2]);
+  } catch (e) {
+    console.error(e);
   }
-
-  crawler();
 }
 
 export { login };

+//The prototype
+// const puppeteer  = require("puppeteer");
+// const crawler = async() => {
+//     try{
+//         const browser = await puppeteer.launch({headless: false, args:['--window-size=1920,1080']});
+//         // for observing the process of login, headless -> false
+//         const page = await browser.newPage();
+//         await page.setViewport({
+//             width:1920,
+//             height:1080
+//         })
+//         await page.goto('https://e-campus.khu.ac.kr/xn-sso/login.php?auto_login=&sso_only=&cvs_lgn=&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Fxn-sso%2Fgw-cb.php%3Ffrom%3D%26login_type%3Dstandalone%26return_url%3Dhttps%253A%252F%252Fe-campus.khu.ac.kr%252Flogin%252Fcallback');
+//         await page.evaluate(() => {
+//             document.querySelector("#login_user_id").value = //자신의 E_Campus account id
+//             document.querySelector("#login_user_password").value = // pw
+//             document.querySelector('#form1 > div > div.login_btn > a > span').click();
+//         })        
+//     }catch(err){
+//         console.log(err)
+//     }
+// }
+// crawler();
+
+
+//The test on nodejs (evaluate version for using input data)
 const puppeteer = require("puppeteer");
+//Example for not using user_input_login_information
+const id = "lorem";
+const pw = "lorem";
+const informationList = new Object(); 
+
+function setTimeoutPromise(ms) {
+    return new Promise((resolve, reject) => {
+      setTimeout(() => resolve(), ms);
+    });
+}
 
-const crawler = async() => {
+async function loglogin(id, pw) {
     try{
         const browser = await puppeteer.launch({headless: false, args:['--window-size=1920,1080']});
-        // for observing the process of login, headless -> false
         const page = await browser.newPage();
         await page.setViewport({
             width:1920,
             height:1080
         })
         await page.goto('https://e-campus.khu.ac.kr/xn-sso/login.php?auto_login=&sso_only=&cvs_lgn=&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Fxn-sso%2Fgw-cb.php%3Ffrom%3D%26login_type%3Dstandalone%26return_url%3Dhttps%253A%252F%252Fe-campus.khu.ac.kr%252Flogin%252Fcallback');
-        await page.evaluate(() => {
-            document.querySelector("#login_user_id").value = //자신의 E_Campus account id
-            document.querySelector("#login_user_password").value = // pw
-            document.querySelector('#form1 > div > div.login_btn > a > span').click();
-        })
+        await page.type("#login_user_id", id);
+        await page.type("#login_user_password", pw);
+        await page.click('#form1 > div > div.login_btn > a > span');
+        await page.waitForTimeout(500);
+        await setTimeoutPromise(1000);
         
+        if(page.url() === 'https://e-campus.khu.ac.kr/xn-sso/gw-cb.php?from=&login_type=standalone&return_url=https%3A%2F%2Fe-campus.khu.ac.kr%2Flogin%2Fcallback'){
+            return ["", "", "Incorrect user ID or password."];   
+        }
+        else {
+            return [id, pw, `I got data { id:"${id}"  pw:"${pw}" }`]; 
+         }
     }catch(err){
         console.log(err)
     }
 }
+async function login(id, pw) {
+    await setTimeoutPromise(1000);
+  try {
+    const value = await loglogin(id, pw);
+    // promise1.then
+    console.log("Id : "+ value[0] +", password : " + value[1] + ", message : " + value[2]);
+    return value[2];
+    
+
+  } catch (e) {
+    console.error(e);
+  }
+}
+
+login(id, pw);
+//[id : , pw : , message : "Incorrect user ID or password."]
 
-crawler();
\ No newline at end of file