Trying to add commands into console

static/js/console.js

@@ -1,19 +1,61 @@
 const c = document.querySelector(".console")
 const ps1 = "[fr@website ~]$ "
+let line = "";
+let command = ""
+
+function exec(command) {
+  console.log(command)
+
+  switch (command[0]) {
+    case "help":
+      line = "about<br>projects<br>contact<br>"
+      break;
+    case "author":
+      line = "Filip Rojek, 2023"
+      break
+    case "contact":
+      line = "Filip Rojek &ltfilip@filiprojek.cz&gt<br>web: <a href='https://filiprojek.cz' target='_blank'>www.filiprojek.cz</a><br>telegram: <a href='https://t.me/filiprojek' target='_blank'>@filiprojek</a>"
+      break
+    case "clear":
+      write("000ctrll")
+      break
+    default:
+      line = "frsh: " + command[0] + ": command not found"
+      break;
+  }
+
+  l = document.createElement("p").innerHTML = line
+  c.appendChild(l)
+}
 
 function write(key) {
   console.log("KEY:", key)
   switch(key) {
     case "Enter":
-      c.innerHTML += "<br>"
-      c.innerHTML += ps1
-      return
+      command = command.split(" ");
+      exec(command)
+      line = document.createElement("p")
+      line.innerHTML += ps1
+      c.appendChild(line)
+      command = ""
+      break
     case "000ctrll":
       c.innerHTML = ""
-      c.innerHTML += ps1
-      return
+      line = document.createElement("p")
+      line.innerHTML += ps1
+      c.appendChild(line)
+      break
+    case "000backspace":
+      console.log(c.textContent.slice(0, -1))
+      console.log(ps1 == c.textContent)
+      if(c.lastChild.textContent.slice(0, -1) !== ps1.slice(0, -1)) {
+        c.lastChild.innerHTML = c.lastChild.textContent.slice(0, -1)
+      }
+      break
+
     default:
-      c.innerHTML += key
+      c.lastChild.innerHTML += key
+      command += key
   }
 }
 
@@ -33,10 +75,17 @@ window.addEventListener("load", () => {
 
 // Capture the keypress
 window.addEventListener("keypress", e => {
-  console.log(e)
+  e.preventDefault()
   write(e.key)
 })
 
+window.addEventListener("keydown", e => {
+  if(e.key == "Backspace") {
+    e.preventDefault()
+    write("000backspace")
+  }
+})
+
 // Register custom ctrl shortcuts
 customCtrlShortcuts("l") // ctrl + l
 customCtrlShortcuts("c") // ctrl + c