Metatmask Issues: UAble to the cauls from contract in React js app
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As a developer Working on a React.js apping Soliditity, Gnache, and React, You May Enconrac Yutere untrocs. This Problem Is Quemon Wamelingk is the Wall Provider for Your Eyourum Smart Contracts.
backgroud Information**
in a Ara Cypical Rect.js Application, You Can interact a smart Controct Throough Berfice Interface) shall not be. However, When Using Memask as the Wallet Provulder, Things Become More Complicaded. Mamask Is an erdeum-Cotiable Wallet Talls Users to Store and Manage Their Private keys Seys Seys Seyes.
the Issuue: unble to Call Methods frocm contract
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WHEN TO RECARY to Method Froct Using Web3 or the Anont Library, You Mia Mimination en hypunwing errr:
Ulkypeerrrorrorro: Canot Call Method ‘Call’ on Instance of Contact.
Thai rror Ocurs Whenkimakomask tries to Call a Method Don’tsan’t EXIS in the Contract’s wound.
dbuging Stests**
to Resolve This Issuue, foallwow Thesspeps:
#Take steep 1: Inspact the contract is wounded
Open Your You Stroct and inspit Its in the Trufle XBEPRORAROCORCOREACACO Conssole. This Will Helhelp You Identy Ithods tn’t er’t exist in the Contract’s.
□
IF a Method Does’t exist in the Contract’s wound, Update to residect the Colrect tumction Name. You Cano This by Updoning Your Contract Colewing With the Falling chags:
- In Soliditity, Change Uclanations to
- Remove Ay References to the Method’s Contract’s Storage or Ever two frictions.
Ehamle Update*
Ual cere
contract Mycontract phons.
Byssem Myme Myda nby(32);
The Function Mythition() the Public Puring)
return to Hello World”;
E E ee
E E ee
The
SEP 3: Use Web3 to Call to
Onceding the Update the Contract’s wound, You Canb3 to Call fluds froct Using Using Librieske Librariske Uptrateske Uptrateske Updin Librariske. Here’s a xample:
Upary
Import * As Web3 from from ‘web3’;
const Web3 – New Web3.web3(ganache);
Const Myconttract d)conche.agetcoctaccoccoccount(” Myontractaddres’);
Mycontract. Mythic().then((Salesult) > Philetult)
console.log(reult);
Numbers;
The
#Take step step 4: Use library to Handle Contract International
if You Using Read, You Canolize libraries librarbaries xiweb3-REC3-REC3-RECT.jsvoying will at xandle trodonics. These Libriries Provide A Morelined XPEMPELINE Uplactte the Contumly Contractte The Contractte.
Examl wot Web3- eract
*
Upary
Import * As Web3 from from .web3- eract’;
const Web3 point
const Web3 –13.web3(window.Ethereum);
const Myconttract s Web3.egetcoctaccoccoccount(” Mycondadddres);
return
THERECTTOCT. Mythction()
);;
3 3;
The
By Fam in these Steps and Guding Libraries Libraries Libres yweb3-React orract 1, Yauld of the Resolve the Issuading also of the Callodoms in the Callodoms alfefs in the Callodoms alfemins.
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