[Modifiy]Data input is possible

@@ -3,29 +3,26 @@ function login(id, pw) {
   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 = id
-              document.querySelector("#login_user_password").value = pw
-              document.querySelector('#form1 > div > div.login_btn > a > span').click();
-          })
-          await page.waitForTimeout(500);
-
-      }catch(err){
-          console.log(err)
+        await page.type("#login_user_id", id);
+        await page.type("#login_user_password", pw);
+        await page.click('#form1 > div > div.login_btn > a > span');
+        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."
         }
-      if(page.url() === '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'){
-        return "the account id or password you entered is incorrect";}
         else {
           return `I got data { id:"${id}"  pw:"${pw}" }`;
         }
+    }catch(err){
+        console.log(err)
     }
+  }
+
   crawler();
 }