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contract.html
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contract.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Call Contract Methods using NEAR</title>
<script src="/lib/near-api-js.js"></script>
</head>
<body>
<nav>
<div><a href="index.html">home</a></div>
<div><a href="login.html">login</a></div>
<div><a href="contract.html">contract</a></div>
</nav>
<hr />
<button id="hello">helloWorld</button>
<br />
<button id="read">read</button> <input type="text" id="read-key" placeholder="key" />
<br />
<button id="write">write</button> <input type="text" id="write-key" placeholder="key" /> <input type="text" id="write-value" placeholder="value" />
<script>
(async () => {
const { connect, keyStores, WalletConnection, Contract } = nearApi;
const CONTRACT_ID = 'dev-1634098284641-40067785396400';
const near = await connect(config());
const wallet = new WalletConnection(near, 'ncd-ii');
const dom = setupDOMBindings();
const contract = new Contract(wallet.account(), CONTRACT_ID, {
viewMethods: ['helloWorld', 'read'],
changeMethods: ['write'],
sender: wallet.account()
});
if (wallet.isSignedIn()) {
dom.btnHello.addEventListener('click', async () => console.log(await contract.helloWorld()));
dom.btnRead.addEventListener('click', async () => console.log(await contract.read({ key: dom.txtReadKey.value })));
dom.btnWrite.addEventListener('click', async () => console.log(await contract.write({ key: dom.txtWriteKey.value, value: dom.txtWriteValue.value })));
}
function config() {
return {
networkId: 'testnet',
keyStore: new keyStores.BrowserLocalStorageKeyStore(),
nodeUrl: 'https://rpc.testnet.near.org',
walletUrl: 'https://wallet.testnet.near.org',
helperUrl: 'https://helper.testnet.near.org',
explorerUrl: 'https://explorer.testnet.near.org'
};
}
function setupDOMBindings() {
return {
btnHello: document.querySelector('#hello'),
btnRead: document.querySelector('#read'),
txtReadKey: document.querySelector('#read-key'),
btnWrite: document.querySelector('#write'),
txtWriteKey: document.querySelector('#write-key'),
txtWriteValue: document.querySelector('#write-value')
};
}
})();
</script>
</body>
</html>