Skip to main content

approve

approve method can be used to approve required amount on the root token.

approve is required in order to deposit amount on polygon chain.

const erc20RootToken = posClient.erc20(<root token address>,true);

// approve 100 amount
const approveResult = await erc20Token.approve(100);

const txHash = await approveResult.getTransactionHash();

const txReceipt = await approveResult.getReceipt();

spenderAddress

The address on which approval is given is called spenderAddress. It is a third-party user or a smart contract which can transfer your token on your behalf.

By default spenderAddress value is erc20 predicate address.

You can specify spender address value manually.

const erc20RootToken = posClient.erc20(<root token address>,true);

// approve 100 amount
const approveResult = await erc20Token.approve(100, {
spenderAddress: <spender address value>
});

const txHash = await approveResult.getTransactionHash();

const txReceipt = await approveResult.getReceipt();