Metamask: How can listen speed up/cancel event on transaction in my dapp?
Optimization of Event Processing REACT WeB3.JS DAPP: Metamk Integration
As a developer that forms a decentralized application (DAP) using React and Web3, you may have encountered scenarios when users click the buttons or interact with your DAPP functionality. However, when it comes to the events caused by these interactions, especially the wallet enabled in the context of DAPP, such as yours, the timetable can play a crucial role.
In this article, we will go into the matter and explore solutions to optimize the event processing REACT WeB3.You DAPPS using Metamk integration.
Problem: Event Misclube
When users interact with your DAPP functionality using Metamk, they mainly execute the JavaScript code in the browser. This can lead to discrepancies between the local code executed by your application and transactions transactions transmitted to the blockchain (or on the network, in the case of a decentralized application).
Here are some possible reasons why this mismatch could occur:
1
Time Differences : JavaScript code execution may not always be synchronous with local Web3.Js or Ethereum blockchain events.
- Virtue and deaf : If your DAPP deals with multiple interactions at the same time, there is a possibility that one interaction may take longer than expected, leading to inconsistent processing.
Metamask integration and event processing
You can consider the following strategies to optimize events in your REACT WeB3.js DAPP using Metamask integration:
1.
Use async/wait to improve time
When executing the JavaScript code in the browser, “async/wait” can help manage asynchronous surgery more efficiently.
`JavaScript
Const HandleSpeedupbuttonClick = () => {
Const SpeeduptransactionHash = Expect fetchspeeduptransaction ();
// Update the user interface with an updated speed transaction hash
};
Function FETCHSPEEDUPTRansaction () {
return a new promise ((solve, reject) => {
// simulate longer execution time for demonstration purposes
Settimeout (() => {
resolution (SpeeduptransactionHash);
}, 2000); // Introduce a delay to demonstrate inconsistent time
});
}
`
2.
Use Event.PreventDefault () 및 Event.Stoppropagation ()
To prevent the event’s default (for example, by clicking the button) to handle local Web3.Js or Ethereum Blockchain events, use Event.PreventDefault () and 'Event.Stoppropagation ().
`JavaScript
Const HandleSpeedupbuttonClick = () => {
Event.PreventDefault ();
// Update the user interface without fulfilling the local code for some time to reduce the impact on events
};
`
3.
Use Web3.JS’S On Event Processing
Instead of relying solely on the JavaScript calling back, you can use the Web3.In the built -inon the event processing mechanism.
`JavaScript
Const HandleSpeedupbuttonClick = () => {
Web3.eth.Eventon (‘Acceleration’, (Event) => {
Console.log (accelerated event received: $ {event.transactionhash});
});
};
`
4.
Introduce a backup mechanism
If the local JavaScript code is not available for event processing or is not inconsistent, use a backup mechanism to process the user interaction.
`JavaScript
Const HandleSpeedupbuttonClick = () => {
IF (Typeof Web3! == ‘Undefined’) {
Web3.eth.Eventon (‘Acceleration’, (Event) => {
Console.log (accelerated event received: $ {event.transactionhash});
});
} else {
// Show a spare message or encourage the user to try again
}
};
`
By implementing one or more of these strategies, you should be able to optimize events in your REACT WeB3.Js DAPP using Metamask integration and improve the overall user experience.
Conclusion
In this article, we have studied ways to address the inconsistent Web3 in the reactive issue.