can we pay the gas price in form of ERC20 token without using the ether? if ERC20 token has a value.then can we pay the gas price in form of ERC20 token.
As per ethereum blockchain consensus algorithm, ETH(ether) is fuel for ethereum blockchain and miners paid by only ether(ETH) for any transaction occurs in the network whether it is failed or success.
And Each token is it’s own mini-database of who owns what. The “token” is just an entry in the token contract, and who “owns” a token is recorded in the contract. A token is never in “your” wallet. So you can not pay gas fees using token.
First you have to understand what is token in deep and for your question refer this article.