Can I use web3 to retrieve token information such as symbol and total supply similar to the etherscan API pro endpoint tokeninformation by providing the contract address?
I'm interested in determining whether the addresses I collect are tokens or regular contracts.
If you're working with token contracts like ERC-20 or ERC-721, you can input the corresponding ABI JSON interface into your web3 instance to access contract data and call functions. Check if these functions return a value or encounter an error.
For more information, visit:
const myContract = new Contract(tokenInterface, contractAddress);
try {
const name = await myContract.methods.name().call();
} catch (error) {
// The contract may not have the 'name' function or public property
}
Note that certain token standards like ERC-721 may not mandate the presence of 'name' and 'symbol' fields within the contract.
I've been working on a feature in my Express router that updates data in a MySQL schema for 'members' of clubs. The members table has various columns like member_id, forename, surname, address, etc. I've successfully created an Express ...
I need help hiding the display of comment information if it is a child comment. Below is my attempt to hide the div with the id "info" if the "ol" element has a class of "children". If you have another method for hiding the div when the comment is a chil ...
I am working with an array of objects within a component that will be iterated in the template. app.component.ts import {Component, OnInit} from '@angular/core'; @Component({ selector: 'app-root', templateUrl: './app.compone ...
I'm currently working on creating a Hangman game using HTML and JS. Most of the code is functioning properly, but I've hit a roadblock. For some reason, one part of my if else statement isn't working correctly. Here's the line of code: ...
Is there a way to populate an HTML table column (using Javascript or jQuery) based on the values in another column and an input field? For instance, if I input the number 115 into the field, then the advance column should display a value of 1 for each ath ...
Struggling with a function that authenticates on a website, it runs smoothly in a basic node.js script but fails when executed from a .vue page within the NuxtJS framework. The error message received when running in the .vue page is TypeError: axiosCookie ...
I have a good grasp of using JavaScript to insert an anchor element into my webpage. For instance, var userName_a = document.createElement('a'); However, I am interested in adding a style name to that same element as well. I attempted the follo ...
I recently created a page that can be viewed here: [LINK] This page is set up to scroll horizontally, resulting in a row of divs with black borders. However, I am facing an issue with the smaller divs inside (red ones). I want them to stay within the par ...
Currently, I am experimenting with using mongoose, mongoDB, next, and express in a test project. Despite referencing solutions like Cannot overwrite model once compiled Mongoose and others, I am encountering issues unique to my situation. Upon initializat ...
Dealing with a JSON response that is a single object, rather than an array, can be tricky. Recently in my project, I encountered a situation where I needed to map and use such a response from an API to fill out a template. It seemed like a simple task at f ...
My proficiency in Javascript is definitely lacking, and I've only just begun to understand it. I have set up an AJAX call to an API using the GET method. The JSON data returned by the API is pretty standard. If I don't include an ID, I receive ...
I have a Leaf class that I want to use to convert all nodes in a JSON response into instances of Leaf. The structure of the JSON response is as follows: JSON Response { "name":"animal", "state":false, "children":[ { "name" ...
I'm currently working on an Ajax request that uploads images to the Imgur API and I want to implement a progress bar to show users the upload progress. I found some guidance in this thread, but it seems to display only 1 and stop working. This is the ...
After extensive research and testing, I have been exploring ways to make API calls in node js. Currently, my focus is on utilizing a portion of the JSON object returned from an API call within a module to generate a Token. var request = require("request") ...
This is an example of code located in a specific folder. While trying to incorporate a material Icon, an error has been encountered. 'React' must be in scope when using JSX import { toast } from 'react-toastify'; import ErrorIcon from ...
Is it possible to create a calendar with all days in one row? I've been searching for a solution to this problem without any luck. It's surprising that I haven't found a clear answer or explanation on how to achieve this. I'm sure man ...
Here is the code I have so far: <!DOCTYPE html> <html> <body> <button onclick="scanarray('a', 'max')">Test with a, max</button> <button onclick="scanarray('b', 'min')">Test with ...
I am currently working on implementing a rating feature using Angular. This component will be used to rate different languages based on how proficient I am with them. My issue lies in the fact that when I click on one array element, it automatically selec ...
In developing my app, I am primarily working with two key JavaScript files: resources_loader.js and app.js. The role of resources_loader.js is to load some JSON files that are utilized by app.js. However, the issue arises when considering the sequence in ...
I'm having trouble sending a variable from a JavaScript application to a Node.js server. Here's the code snippet: //client side $.get('http://smart-shopper.ro/messages?from=lastGeneralTimeStamp', datas => { console.log("dat ...