update crypto position

static/app.js

@@ -2933,3 +2933,37 @@ function updateStockPorftolio() {
     stockValidate();
   }
 }
+
+
+
+// update crypto portfolio position with new values
+function updateCryptoPorftolio() {
+
+  let update_crypto_cost = document.getElementById('cryptocost').value;
+  let update_crypto_shares = document.getElementById('cryptoshares').value;
+  let update_crypto_symbol = document.getElementById('inputText4').value;
+  let update_crypto_days = document.getElementById('cryptodate').value;
+
+  let update_crypto_settings = {
+    shares:update_crypto_shares,
+    cost:update_crypto_cost,
+    symbol:update_crypto_symbol,
+    days:update_crypto_days,
+  };
+
+  if ((update_crypto_shares !== '') && (update_crypto_cost !== '') && (update_crypto_days !== '') && (update_crypto_symbol !== '')) {
+    fetch("/savePortfolioCryptoSettings", {
+    method: "POST",
+    body: JSON.stringify(update_crypto_settings),
+    });
+
+    document.getElementById('updated-crypto-p').style.display = "block";
+    setTimeout(function hideElement() {
+      document.getElementById('updated-crypto-p').style.display = "none";
+    }, 5000);
+
+  } else {
+    cryptoValidate();
+  }
+}
+