add help panel to the REPL

1 files changed, 12 insertions, 0 deletions

diff --git a/lambda-calcul/haskell/public/repl.js b/lambda-calcul/haskell/public/repl.js
index 17be218..fd1244a 100644
--- a/lambda-calcul/haskell/public/repl.js
+++ b/lambda-calcul/haskell/public/repl.js
@@ -132,8 +132,20 @@ function loadText(e) {
   return false;
 };
 
+function toggleHelp(e) {
+  const help = document.getElementById("help");
+  if(help.style.display === "block") {
+    help.style.display = "none";
+  } else {
+    help.style.display = "block";
+  }
+}
+
+
 document.getElementById("command").addEventListener("keyup", sendCommand);
 document.getElementById("connect").addEventListener("click", connect);
 document.getElementById("send").addEventListener("click", loadText);
+document.getElementById("helptip").addEventListener("click", toggleHelp);
+document.getElementById("help").addEventListener("click", toggleHelp);
 
 connect();