Add files via upload

ThomasBlock · Apr 28, 2024 · 0e2506a · 0e2506a
1 parent 7c3ff24
commit 0e2506a
Showing 1 changed file with 59 additions and 0 deletions.
diff --git a/4.html b/4.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>MetaMask Chain Switch</title>
+<script>
+  const provider = window.ethereum;
+
+  async function switchChain(chainId, chainName, rpcUrl) {
+    if (!provider) {
+      alert("MetaMask is not installed!");
+      return;
+    }
+
+    try {
+      await provider.request({
+        method: "wallet_switchEthereumChain",
+        params: [{ chainId: chainId }]
+      });
+    } catch (switchError) {
+      console.error(switchError);
+      if (switchError.code === 4902) {
+        addChain(chainId, chainName, rpcUrl);
+      } else {
+        console.error("Unable to switch to the chain.");
+      }
+    }
+  }
+
+  async function addChain(chainId, chainName, rpcUrl,explorer,currencySymbol) {
+	const hexChainId = '0x' + chainId.toString(16); // Convert decimal to hexadecimal
+    try {
+      await provider.request({
+        method: "wallet_addEthereumChain",
+        params: [{
+          chainId: chainId,
+          chainName: chainName,
+			nativeCurrency: {
+            name: currencySymbol, // Assuming the symbol is also used as the name
+            symbol: currencySymbol, // Actual currency symbol
+            decimals: 18 // Standard decimal places for Ethereum-like networks
+          },
+          rpcUrls: [rpcUrl],
+          blockExplorerUrls: [explorer]
+        }]
+      });
+    } catch (addError) {
+      console.error(addError);
+    }
+  }
+</script>
+</head>
+<body>
+<h1>MetaMask Chain Management</h1>
+<button onclick="switchChain(17000, 'Holesky', 'https://ethereum-holesky-rpc.publicnode.com','https://holesky.etherscan.io','ETH')">Holesky</button>
+<button onclick="switchChain(9659, 'Parallel Testnet', 'https://rpc-accused-coffee-koala-b9fn1dik76.t.conduit.xyz','https://explorerl2new-accused-coffee-koala-b9fn1dik76.t.conduit.xyz','ETH')">Switch to Custom Network 2</button>
+</body>
+</html>