approve
The 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();