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July 15, 2022 16:17
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Switch and or Add a network in MetaMask
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| try { | |
| await ethereum.request({ | |
| method: 'wallet_switchEthereumChain', | |
| params: [{ chainId: '0xf00' }], | |
| }); | |
| } catch (switchError) { | |
| // This error code indicates that the chain has not been added to MetaMask. | |
| if (switchError.code === 4902 || switchError?.data?.orginalError?.code === 4902) { | |
| try { | |
| await ethereum.request({ | |
| method: 'wallet_addEthereumChain', | |
| params: [ | |
| { | |
| chainId: '0xf00', | |
| chainName: '...', | |
| rpcUrls: ['https://...'] /* ... */, | |
| }, | |
| ], | |
| }); | |
| } catch (addError) { | |
| // handle "add" error | |
| } | |
| } | |
| // handle other "switch" errors | |
| } |
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We are working on getting a fix in so that we can suggest removing the
|| switchError?.data?.orginalError?.code === 4902this is a known bug but currently is required to ensure it will work on mobile. If you add this OR statement, it should not break once we fix it.