How to connect web3.js 1.0.x to Metamsk
0
I am using web3.js 1.0.0-beta.36 to connect to the blockchain.
But unfortunately this code cannot connect to Metamask, if it has been enabled.
var metamask = false;
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
metamask = true;
web3.eth.defaultAccount = web3.eth.accounts[0];
} else {
web3 = new Web3(new
Web3.providers.HttpProvider(infuraUrl));
var address = web3.eth.accounts.create().address;
}
myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.Register((Name,Id).send({},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
When we run this program with Metamsk it displays this error:
Error: Returned error: Error: MetaMask Tx Signature: User denied transaction signature.
but when I mention a fixed address it works:
myContract.methods.Register((Name,Id).send({from: '0x...'},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
For some reasons I can't bring the address itself in the source code and I want it to get the address from Metamask. What should I do?
ethereum web3js metamask
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
add a comment |
0
I am using web3.js 1.0.0-beta.36 to connect to the blockchain.
But unfortunately this code cannot connect to Metamask, if it has been enabled.
var metamask = false;
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
metamask = true;
web3.eth.defaultAccount = web3.eth.accounts[0];
} else {
web3 = new Web3(new
Web3.providers.HttpProvider(infuraUrl));
var address = web3.eth.accounts.create().address;
}
myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.Register((Name,Id).send({},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
When we run this program with Metamsk it displays this error:
Error: Returned error: Error: MetaMask Tx Signature: User denied transaction signature.
but when I mention a fixed address it works:
myContract.methods.Register((Name,Id).send({from: '0x...'},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
For some reasons I can't bring the address itself in the source code and I want it to get the address from Metamask. What should I do?
ethereum web3js metamask
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
add a comment |
0
0
0
I am using web3.js 1.0.0-beta.36 to connect to the blockchain.
But unfortunately this code cannot connect to Metamask, if it has been enabled.
var metamask = false;
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
metamask = true;
web3.eth.defaultAccount = web3.eth.accounts[0];
} else {
web3 = new Web3(new
Web3.providers.HttpProvider(infuraUrl));
var address = web3.eth.accounts.create().address;
}
myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.Register((Name,Id).send({},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
When we run this program with Metamsk it displays this error:
Error: Returned error: Error: MetaMask Tx Signature: User denied transaction signature.
but when I mention a fixed address it works:
myContract.methods.Register((Name,Id).send({from: '0x...'},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
For some reasons I can't bring the address itself in the source code and I want it to get the address from Metamask. What should I do?
ethereum web3js metamask
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
I am using web3.js 1.0.0-beta.36 to connect to the blockchain.
But unfortunately this code cannot connect to Metamask, if it has been enabled.
var metamask = false;
if (typeof web3 !== 'undefined') {
web3 = new Web3(web3.currentProvider);
metamask = true;
web3.eth.defaultAccount = web3.eth.accounts[0];
} else {
web3 = new Web3(new
Web3.providers.HttpProvider(infuraUrl));
var address = web3.eth.accounts.create().address;
}
myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.Register((Name,Id).send({},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
When we run this program with Metamsk it displays this error:
Error: Returned error: Error: MetaMask Tx Signature: User denied transaction signature.
but when I mention a fixed address it works:
myContract.methods.Register((Name,Id).send({from: '0x...'},function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
For some reasons I can't bring the address itself in the source code and I want it to get the address from Metamask. What should I do?
ethereum web3js metamask
ethereum web3js metamask
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
asked Nov 24 '18 at 23:32
Amir ZojajiAmir Zojaji
533723
533723
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
0
Eureka!!! (without special Archimedes style!)
Finally I found.
window.addEventListener('load', async () => {
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum);
try {
await ethereum.enable();
var accounts= await web3.eth.getAccounts();
var option={from: accounts[0] };
var myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.RegisterInstructor('11','Ali')
.send(option,function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
window.web3 = new Web3(web3.currentProvider);
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */});
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!');
}
});
This connects to Metamask properly. Main problem was that our browsers are supermodern!!!
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Eureka!!! (without special Archimedes style!)
Finally I found.
window.addEventListener('load', async () => {
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum);
try {
await ethereum.enable();
var accounts= await web3.eth.getAccounts();
var option={from: accounts[0] };
var myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.RegisterInstructor('11','Ali')
.send(option,function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
window.web3 = new Web3(web3.currentProvider);
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */});
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!');
}
});
This connects to Metamask properly. Main problem was that our browsers are supermodern!!!
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
add a comment |
0
Eureka!!! (without special Archimedes style!)
Finally I found.
window.addEventListener('load', async () => {
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum);
try {
await ethereum.enable();
var accounts= await web3.eth.getAccounts();
var option={from: accounts[0] };
var myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.RegisterInstructor('11','Ali')
.send(option,function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
window.web3 = new Web3(web3.currentProvider);
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */});
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!');
}
});
This connects to Metamask properly. Main problem was that our browsers are supermodern!!!
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
add a comment |
0
0
0
Eureka!!! (without special Archimedes style!)
Finally I found.
window.addEventListener('load', async () => {
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum);
try {
await ethereum.enable();
var accounts= await web3.eth.getAccounts();
var option={from: accounts[0] };
var myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.RegisterInstructor('11','Ali')
.send(option,function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
window.web3 = new Web3(web3.currentProvider);
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */});
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!');
}
});
This connects to Metamask properly. Main problem was that our browsers are supermodern!!!
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
Eureka!!! (without special Archimedes style!)
Finally I found.
window.addEventListener('load', async () => {
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum);
try {
await ethereum.enable();
var accounts= await web3.eth.getAccounts();
var option={from: accounts[0] };
var myContract = new web3.eth.Contract(abi,contractAddress);
myContract.methods.RegisterInstructor('11','Ali')
.send(option,function(error,result){
if (! error)
console.log(result);
else
console.log(error);
});
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
window.web3 = new Web3(web3.currentProvider);
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */});
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!');
}
});
This connects to Metamask properly. Main problem was that our browsers are supermodern!!!
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
answered Nov 25 '18 at 15:55
Amir ZojajiAmir Zojaji
533723
533723
add a comment |
add a comment |
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