Syntax

exchange.IO("wrap", ...)

Wraps the native coin (such as ETH or BNB) into its wrapped token (such as WETH or WBNB), 1:1 without slippage, costing only gas.


    
    
    
exchange.IO(k, amount)

Examples

Wrap 0.01 ETH into WETH.


    javascript
    
    
function main() {
    var r = exchange.IO("wrap", "0.01")
    if (!r) {
        Log("wrap failed:", GetLastError())
        return
    }
    var rc = exchange.IO("receipt", r.txHash, 120000)
    Log(r.from, "→", r.to, r.amount, "status:", rc.status)
}

Returns

Type Description

object / null value

Returns {txHash, action, from, to, amount, raw} when the transaction is broadcast successfully. from and to are the names of the currency before and after the conversion. The call waits only for the transaction to be broadcast, not for it to be confirmed on-chain; use exchange.IO("receipt", ...) to check the on-chain result. Returns a null value and reports an error in cases such as insufficient balance.

Arguments

Name	Type	Required	Description
k	string	Yes	Fixed as `wrap`, which means wrapping the native coin.
amount	string / number	Yes	The amount of native coin to wrap, in human-readable units. Passing it as a string is recommended, for example `"0.01"`. `all` is not supported, because some native coin must be kept to pay for gas.